WO2015080529A1 - 광소자 정렬방법 - Google Patents
광소자 정렬방법 Download PDFInfo
- Publication number
- WO2015080529A1 WO2015080529A1 PCT/KR2014/011589 KR2014011589W WO2015080529A1 WO 2015080529 A1 WO2015080529 A1 WO 2015080529A1 KR 2014011589 W KR2014011589 W KR 2014011589W WO 2015080529 A1 WO2015080529 A1 WO 2015080529A1
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- WO
- WIPO (PCT)
- Prior art keywords
- reference hole
- post
- optical
- optical fiber
- hole
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
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Classifications
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/42—Coupling light guides with opto-electronic elements
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/4201—Packages, e.g. shape, construction, internal or external details
- G02B6/4204—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms
- G02B6/4214—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms the intermediate optical element having redirecting reflective means, e.g. mirrors, prisms for deflecting the radiation from horizontal to down- or upward direction toward a device
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/36—Mechanical coupling means
- G02B6/3616—Holders, macro size fixtures for mechanically holding or positioning fibres, e.g. on an optical bench
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/4201—Packages, e.g. shape, construction, internal or external details
- G02B6/4219—Mechanical fixtures for holding or positioning the elements relative to each other in the couplings; Alignment methods for the elements, e.g. measuring or observing methods especially used therefor
- G02B6/422—Active alignment, i.e. moving the elements in response to the detected degree of coupling or position of the elements
- G02B6/4221—Active alignment, i.e. moving the elements in response to the detected degree of coupling or position of the elements involving a visual detection of the position of the elements, e.g. by using a microscope or a camera
- G02B6/4224—Active alignment, i.e. moving the elements in response to the detected degree of coupling or position of the elements involving a visual detection of the position of the elements, e.g. by using a microscope or a camera using visual alignment markings, e.g. index methods
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/4201—Packages, e.g. shape, construction, internal or external details
- G02B6/4219—Mechanical fixtures for holding or positioning the elements relative to each other in the couplings; Alignment methods for the elements, e.g. measuring or observing methods especially used therefor
- G02B6/422—Active alignment, i.e. moving the elements in response to the detected degree of coupling or position of the elements
- G02B6/4227—Active alignment methods, e.g. procedures and algorithms
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/4201—Packages, e.g. shape, construction, internal or external details
- G02B6/4219—Mechanical fixtures for holding or positioning the elements relative to each other in the couplings; Alignment methods for the elements, e.g. measuring or observing methods especially used therefor
- G02B6/4228—Passive alignment, i.e. without a detection of the degree of coupling or the position of the elements
- G02B6/423—Passive alignment, i.e. without a detection of the degree of coupling or the position of the elements using guiding surfaces for the alignment
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/4201—Packages, e.g. shape, construction, internal or external details
- G02B6/4249—Packages, e.g. shape, construction, internal or external details comprising arrays of active devices and fibres
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/36—Mechanical coupling means
- G02B6/3628—Mechanical coupling means for mounting fibres to supporting carriers
- G02B6/3648—Supporting carriers of a microbench type, i.e. with micromachined additional mechanical structures
- G02B6/3652—Supporting carriers of a microbench type, i.e. with micromachined additional mechanical structures the additional structures being prepositioning mounting areas, allowing only movement in one dimension, e.g. grooves, trenches or vias in the microbench surface, i.e. self aligning supporting carriers
Definitions
- This embodiment relates to an optical device alignment method. More particularly, the present invention relates to an optical device alignment method using a method of aligning two circular holes and an optical device formed on a substrate.
- Optical fiber based signal transmission method widely used for long distance communication has high quality that requires high speed and high density data transmission due to its advantages such as electromagnetic interference (EMI) and its usefulness at broadband frequency. It is widely applied to mass digital media transmission, including digital video display devices.
- EMI electromagnetic interference
- the optical fiber-based signal transmission method can be achieved by interposing a lens and a reflecting means between the optical fiber and the optical element, and in order to realize such a structure, the optical element is mounted with a structure in which the optical fiber, the reflecting means, and the lens are fixed. It is possible to use a method of mounting on a substrate to perform optical alignment.
- the optical transceiver device manufactured by the optical alignment method may bring about a simplification of structure, a reduction in production cost, and improved durability and precision depending on how the optical elements, lenses, reflecting means, and optical fibers are aligned.
- the problem of optical alignment is very important.
- the optical transceiver device manufactured by performing optical alignment in a conventional manner is not only high cost, but also has a large volume, making it difficult to use in a mobile communication device such as a smartphone, and having a complicated structure, thereby ensuring stability. There is no problem.
- Figure 1 shows an optical device alignment method according to the prior art.
- FIG. 1 illustrates a state in which an injection structure 102 is assembled on a substrate 101.
- the injection structure 102 having the precise holes is used as a guide.
- An optical element 103 is disposed on the substrate 101, and two circular holes 104 are provided on an extension line in the arrangement direction of the optical element 103, and the injection structure 102 includes two circular posts 105. It has a dog. Two circular posts 105 are fitted in the circular holes 104, respectively, and further includes a lens structure on the assembled injection structure 102 to perform light alignment.
- an embodiment according to the present invention is devised to solve the above problems, and an object of the present invention is to provide an optical device and an optical fiber based on a first reference hole, a second reference hole, a first reference line, and a second reference line.
- the present invention provides a method of aligning an optical device that can align light.
- Another object of the present embodiment is to provide a new method of aligning an optical element, thereby increasing the tolerance of the components of the optical transceiver, and ultimately miniaturizing the optical transceiver, resulting in economical efficiency, manufacturing convenience, and the like. It is to intention.
- providing an optical device And a base plate having the optical element disposed at a set position and having a first reference hole and a second reference hole formed at a first distance from the first reference hole. It provides an optical device alignment method comprising a.
- the step of providing an optical device Providing a base plate having a first reference hole and a second reference hole; Disposing the optical device at a position determined based on the first reference hole and the second reference hole on the base plate; And optically aligning the optical fiber and the optical device by installing an optical fiber fixing block having an optical fiber and a lens unit optically communicating with the optical device and having a first post and a second post formed thereon.
- the optical alignment is performed by inserting the first post into the first reference hole, inserting the second post into the second reference hole, and inserting the second post more loosely than the first post.
- the optical alignment between the optical element and the optical fiber can be easily performed, and the alignment error can be minimized.
- optical transceiver device manufactured by the present alignment method can be miniaturized and can be manufactured by simple combination of inexpensive components, thereby reducing the manufacturing cost.
- the effect of the present invention has a variety of effects, such as having excellent durability according to the embodiment, such effects can be clearly seen in the description of the embodiments described later.
- Figure 1 shows an optical device alignment method according to the prior art.
- FIG. 2 is a block diagram showing an optical device aligning method according to the first embodiment.
- FIG. 3 is a perspective view showing an optical transceiver according to the first embodiment.
- 4A is a plan view illustrating an optical device mounted on a base plate on which a first reference hole and a second reference hole are formed according to the first embodiment.
- 4B is a plan view illustrating an optical device and an alignment plate on which a first reference hole and a second reference hole are formed on the base plate according to the first embodiment.
- FIG. 5 is a conceptual diagram of an optical device alignment method according to the first embodiment.
- FIG. 6 is a conceptual diagram illustrating a state in which the optical device and the lens unit according to the first embodiment are in optical alignment.
- FIG 7A is a top view of the optical fiber fixing block according to the first embodiment.
- FIG 7B is a side view of the optical fiber fixing block according to the first embodiment.
- FIG 8A is a top view of the alignment plate according to the first embodiment.
- FIG 8B is a side view of the alignment plate according to the first embodiment.
- FIG. 9 is a plan view showing a plurality of optical devices according to the first embodiment is formed on the base plate.
- FIG. 10 is a perspective view showing an optical transceiver according to the second embodiment.
- FIG. 11 is a plan view illustrating an optical device disposed on a base plate on which a first reference hole and a second reference hole are formed according to the second embodiment.
- FIG. 12 is a conceptual diagram of an optical device alignment method according to the second embodiment.
- FIG. 13 is a conceptual view illustrating a state in which the optical device and the lens unit according to the second embodiment are aligned.
- FIG 14A shows a side view of the optical fiber fixing block according to the second embodiment.
- FIG. 14B shows a top view of the optical fiber fixing block according to the second embodiment.
- FIG. 15 is a plan view illustrating a plurality of optical devices according to the second embodiment formed on a base plate.
- 16 is a block diagram showing an optical device aligning method according to the third embodiment.
- a component is described as being 'connected', 'coupled' or 'fastened' to another component, that component may be directly connected to or connected to that other component, but there is another component between each component. It is to be understood that the elements may be 'connected', 'coupled' or 'fastened'.
- the base plate may be displayed as "210" in the first embodiment, and may be displayed as "210" in the second embodiment.
- FIG. 2 is a block diagram showing an optical device aligning method according to the first embodiment.
- 3 is a perspective view showing a transmission path expander 1 'according to the first embodiment.
- 4A is a plan view illustrating a state in which an optical device 215 'is mounted on a base plate 210' on which a first reference hole A 'and a second reference hole B' are formed according to the first embodiment.
- FIG. 4B shows an alignment plate 220 'having an optical element 215', a first reference hole A 'and a second reference hole B' formed on the base plate 210 'according to the first embodiment. It is a top view which shows a state to locate.
- optical transceiver of the first embodiment Prior to describing the optical device alignment method according to the first embodiment of the present invention, the configuration of the optical transceiver of the first embodiment will be briefly described.
- the optical transceiving device of the first embodiment may be represented differently by the transmission path expander 1 '.
- the transmission path expander 1 ′ of the first embodiment may include a base plate 210 ′, an optical fiber fixing block 300 ′, and a housing 400 ′.
- an installation part for installing on the base plate 210 ', the first reference hole A' and the second reference hole formed at a first distance 212 'with the first reference hole A' may further include an alignment plate 220 'having a B').
- the method of aligning an optical device 215 ′ includes preparing an optical device 215 ′ (S110); And a second reference hole having the optical element 215 'disposed at a set position and formed at a first reference hole A' and at a first distance 212 'from the first reference hole A'.
- the setting position intersects the first reference line 211 'and the first reference line 211' passing through the first reference hole A 'and the second reference hole B', and the first reference hole A '
- the second interval 213 ′ may be narrower than the first interval 212 ′.
- the base plate 210 ' may be, for example, a printed circuit board (PCB) substrate.
- PCB printed circuit board
- the setting position is a portion where the optical element 215 'is disposed (or mounted) on the base plate 210'.
- the first reference hole A 'and the second reference hole B' have a through structure or a groove having a predetermined depth formed through the opposite surface from one surface of the base plate 210 'or the alignment plate 220'. It can be a structure.
- the first reference line 211 ′ and the second reference line 214 ′ may be virtual lines, and a setting position is determined based on the first reference line 211 ′ and the second reference line 214 ′.
- the setting position may be located on the second reference line 214 ′. That is, the optical device 215 ′ may be positioned on the second reference line 214 ′ on the base plate 210 ′. In some embodiments, the optical device 215 ′ may be disposed at a point where the second reference line 214 ′ and the first reference line 211 ′ cross each other.
- the center of the light emitting portion or the light receiving portion of the optical element 215' is perpendicular to the second reference line 214 'and the first reference line 211'. It can be located at In addition, when there are a plurality of optical elements 215 ', the optical elements 215' may be arranged in a line or a plurality of columns along the length direction of the second reference line 214 'on the second reference line 214'. .
- the first reference line 211 ′ is determined by the first reference hole A ′ and the second reference hole B ′. That is, the line passing through the first reference hole A 'and the second reference hole B' is the first reference line 211 '.
- a line passing through the center of the first reference hole A 'and the center of the second reference hole B' may be the first reference line 211 '.
- a gap between the center of the first reference hole A 'and the center of the second reference hole B' forms the first gap 212 '.
- the second reference line 214 ' is determined by the first reference line 211', the first reference hole A ', and the second gap 213'.
- the second reference line 214 ′ may intersect the first reference line 211 ′ on the base plate 210 ′.
- the second reference line 214 ′ may vertically intersect the first reference line 211 ′ on the base plate 210 ′.
- the second reference line 214 'of the first embodiment may be located opposite the second reference hole B' with the first reference hole A 'interposed therebetween, and the first reference hole A'. And may cross the first reference line 211 ′ at a position spaced apart from the second gap 213 ′. In this case, the second interval 213 'is narrower than the first interval 212'.
- the first reference hole A 'and the second reference hole B' are required to determine a setting position at which the optical device 215 'is disposed on the base plate 210'.
- the base plate 210 ' is a PCB substrate, it is difficult to precisely form the position or size of the first reference hole A' and the second reference hole B 'directly.
- the first reference hole (A ') and the second reference hole (B') is formed on the base plate 210 'by placing the alignment plate 220' precisely formed on the base plate 210 '.
- a ') and the second reference hole B' need to be provided. That is, the alignment plate 220 ′ may serve to provide the processed first reference hole A ′ and the second reference hole B ′ to the base plate 210 ′.
- the first reference hole A 'and the second reference hole B' formed on the alignment plate 220 ' may be used as a reference for determining an installation position on the base plate 210'. 4B shows that the alignment plate 220 'is formed on the base plate 210'.
- the optical fiber 340 'and the lens unit 320' for optical communication with the optical device 215 ' are fixedly installed and inserted into the first reference hole A'.
- the method may further include preparing and installing the optical fiber fixing block 300 'having the second post D' inserted into the first post C 'and the second reference hole B' (S130). have.
- the second post D ' is inserted into the second reference hole B' more loosely than when the first post C 'is inserted into the first reference hole A'.
- first reference hole A 'and the second reference hole B' may be arranged along the longitudinal direction of the optical fiber 340 '.
- first post C ′ and the second post D ′ may be arranged along the longitudinal direction of the optical fiber 340 ′.
- the length direction of the optical fiber 340 ' may refer to the length direction of the portion of the optical fiber 340' fixed to the optical fiber fixing block 300 '. This arrangement can reduce unnecessary space in the light alignment.
- the optical fiber fixing block 300' and the alignment plate 220 ' are formed on the alignment plate 220 ', the optical fiber fixing block 300' and the alignment plate 220 'are formed on the first post C'.
- May be coupled to the first reference hole A 'and the second post D' may be inserted into the second reference hole B '.
- the first post C ' is tightly inserted into the first reference hole A'.
- the second post D ' is inserted into the second reference hole B' more loosely than when the first post C 'is inserted into the first reference hole A'.
- the diameter of the second post D ' may be smaller than the diameter of the first post C'.
- the diameter of the second reference hole B ' may be larger than the diameter of the first reference hole A'.
- FIG. 5 is a conceptual diagram of an optical device alignment method according to the first embodiment.
- 6 is a conceptual diagram illustrating a state in which the optical device 215 ′ and the lens unit 320 ′ according to the first embodiment are in optical alignment.
- the optical device 215 ′ may be positioned at a point on the first reference line 211 ′ spaced by a second distance 213 ′ from the first reference point.
- the line passing through the first post C 'and the second post D' formed on the bottom surface of the optical fiber fixing block 300 ' may be the third reference line 350'.
- a line passing through the center of the first post C 'and the center of the second post D' may be the third reference line 350 ', and the center of the first post C'
- An interval between the centers of the second posts D ' may be a first interval 212'. That is, the distance between the center of the first post C 'and the center of the second post D' is equal to the distance between the center of the first reference hole A 'and the center of the second reference hole B'.
- the lens unit 320 ′ is positioned on the third reference line 350 ′ when the optical fiber fixing block 300 ′ is viewed from above. More specifically, the lens unit 320 ′ is positioned at a point on the third reference line 350 ′ spaced by a second distance 213 ′ from the first post C ′.
- the optical fiber fixing block 300 ' When the optical fiber fixing block 300 'is installed on the base plate 210' or the alignment plate 220 ', the first post C' is tightly inserted into the first reference hole A '. However, the second post D 'is more loosely inserted into the second reference hole B' than when the first post C 'is inserted into the first reference hole A'. Therefore, the second post D 'has a movement in the second reference hole B'.
- the third reference line 350 ' can move finely in the clockwise or counterclockwise direction with the first reference hole A' as the axis of rotation, the first reference line 211 'and the third reference line 350' can be moved. May or may not match.
- the optical element 215 ′ and the lens unit 320 ′ may be disposed on the fourth reference line. That is, the optical element 215 'and the lens unit 320' may be coaxially disposed.
- the second interval 213 ' is narrower than the first interval 212'. That is, since the position of the second post D 'is far from the first post C' and the position of the lens part 320 'is relatively close, the second post D' is the second reference. Even if it moves a lot in the hole B ', the lens part 320' moves small. Therefore, even when the first reference line 211 'and the third reference line 350' do not coincide at the position of the second post D ', the misalignment between the optical element 215' and the lens portion 320 'is minute. .
- the ratio of the second spacing 213 'to the first spacing 212' may be set such that the optical fiber 340 'and the lens portion 320' are optically aligned with the optical element 215 'within a tolerance range. have.
- the first interval 212 ′ and the second interval 213 ′ are not predetermined.
- the designer can set the appropriate first spacing 212 'and second spacing 213' so that the optical device 215 'and the optical fiber 340' can be optically aligned within the tolerance range according to the required specification.
- an appropriate ratio of the second interval 213 'to the first interval 212' may be set.
- the second post D 'is inserted into the second reference hole B' more loosely than when the first post C 'is inserted into the first reference hole A' is adopted.
- the lens unit 320 ′, the reflecting means 330 ′, and the optical fiber 340 ′ may be arranged in a structure in which the optical alignment is possible.
- the reflecting means 330 ' may be, for example, a reflector or a prism.
- Light emitted from the end of the optical fiber 340 'through the optical alignment changes the path through the reflecting means 330' and is concentrated through the lens unit 320 'to reach the optical element 215'. Or light emitted from the optical element 215 'is collected through the lens portion 320' and redirected through the reflecting means 330 'to reach the end of the optical fiber 340'. Also
- the optical device 215 ′ and the lens unit 320 ′ may be disposed on the fourth reference line 216 ′.
- the optical device 215 ′ and the lens unit 320 ′ may be disposed to maintain the third gap 217 ′.
- the designer can set this third interval 217 '.
- the third gap 217' may be determined by the height up to the point where the lens unit 320 'is located in the optical fiber fixing block 300'.
- the third spacing 217' is the height of the height of the alignment plate 220 'and the position of the lens unit 320' among the optical fiber fixing blocks 300 '. Can be determined by the combined length. The operator merely inserts the optical fiber fixing block 300 'or the combination of the optical fiber fixing block 300' and the alignment plate 220 ', which has already been determined, into the base plate 210', thereby providing the optical element 215 'and the lens unit. 320 'may be disposed while maintaining the third gap 216'.
- the fixed posts 221 ′ May be formed in a line on the third reference line 350 '. Due to this structure, the volume of the transmission path expander 1 'can be reduced. This will be described later.
- optical fiber fixing block 300 ' and the alignment plate 220' will be described in more detail.
- 7A is a top view of the optical fiber fixing block 300 ′ according to the first embodiment.
- 7B is a side view of the optical fiber fixing block 300 ′ according to the first embodiment.
- the optical fiber 340 ' is inserted into the optical fiber fixing block 300' by a mounting length L 'along its longitudinal direction and seated by the optical fiber guide part 310'. Since the optical fiber 340 'secures the mounting length L' which is fixed to the optical fiber fixing block 300 'by a predetermined length, the stability and durability of the optical transceiver can be ensured.
- the optical fiber guide part 310 ' serves to guide the optical fiber 340' to be disposed while securing a seating length L 'along the longitudinal direction.
- One surface of the optical fiber fixing block 300 ' may protrude along the longitudinal direction of the optical fiber 340' according to an embodiment, and the lens portion 320 'faces the bottom of the protrusion 360'. It is fixedly installed. That is, the lens 320 'may be fixedly installed to face in a direction perpendicular to the longitudinal direction of the optical fiber 340'.
- the seated longitudinal direction of the optical fiber 340 ′ mounted and fixed to the optical fiber fixing block 300 ′ may include the same direction as that of the first reference line 211 ′ or the third reference line 350 ′.
- the optical fiber 340 ' should secure the mounting length L' by a predetermined length. Therefore, when the first post C ', the second post D', the first reference hole A 'and the second reference hole B' are disposed in the longitudinal direction, the optical fiber 340 'needs Since the first space C ', the second post D', the first reference hole A ', and the second reference hole B' are used together, the required space can be miniaturized.
- 8A is a top view of the alignment plate 220 'according to the first embodiment.
- 8B is a side view of the alignment plate 220 'according to the first embodiment.
- At least two fixing posts (or mounting parts) 221 may be formed on the bottom of the alignment plate 220 ', and corresponding to the positions of the fixing posts 221' on the top of the base plate 210 '. Fixing holes may be formed at positions. Therefore, the alignment plate 220 'may be installed in the base plate 210' in such a manner that the fixing posts 221 'are inserted into the fixing holes. In this case, the fixing posts 221 ′ and the fixing holes may be disposed in a straight line on the first reference line 211 ′. Due to this structure, it is possible to reduce the volume of the optical transmission and reception device manufactured by the alignment method according to the present embodiment.
- the first reference hole A 'and the second reference hole B' need to be precisely processed, but the alignment plate 220 'itself does not need to be precisely manufactured. Therefore, mass production is possible at a low cost by the plastic injection molding method.
- the installation portion formed on the bottom surface of the alignment plate 220 'does not need to be precisely manufactured.
- the manufacturer can replace the optical element 215 'and the optical fiber 340' by simply inserting the transmission path expander 1 'according to the present embodiment onto the base plate 210' on which the optical element 215 'is mounted. Can be aligned.
- FIG. 9 is a plan view showing a plurality of optical elements 215 'according to the first embodiment are formed on the base plate 210'.
- three optical elements 215 ′ are illustrated, but may be two, and four or more may be disposed at a set position. As described above, the setting position is determined by the first reference line 211 'and the second reference line 214'. As shown in FIG. 9, the optical elements 215 ′ are arranged in one column along the second reference line 214 ′, but according to the exemplary embodiment, the optical elements 215 ′ are arranged in at least two rows along the second reference line 214 ′. May be
- the optical transceiver 1 of the second embodiment will be configured to correspond to the transmission path expander 1 'of the first embodiment.
- FIG. 10 is a perspective view showing an optical transceiver according to the second embodiment.
- FIG. 11 is a plan view illustrating an optical device disposed on a base plate on which a first reference hole and a second reference hole are formed according to the second embodiment.
- FIG. 12 is a conceptual diagram of an optical device alignment method according to the second embodiment.
- 13 is a conceptual view illustrating a state in which the optical device and the lens unit according to the second embodiment are aligned.
- the base plate 210 of the second embodiment shown in FIG. 10 includes a first reference hole A and a second reference hole B along the first reference line 211 displayed on the upper surface thereof.
- An optical element 215 is provided at a point where the reference line 211 and the second reference line 214 cross each other.
- the optical fiber fixing block 300 includes the optical fiber guide part 310, the lens part 320, the reflecting means 330, and the optical fiber 340, and is arranged on the bottom surface of the optical fiber fixing block 300.
- a first post (C), the second post (D) is provided along.
- the optical device alignment method comprises the steps of providing an optical device 215 (S210); And a base plate having an optical element 215 disposed at a set position and having a first reference hole A and a second reference hole B formed at a first distance 212 from the first reference hole A.
- the setting position may include a first reference line 211 passing through the first reference hole A and the second reference hole B; And a position intersecting the first reference line 211 and positioned at a second interval 213 from the first reference hole A, between the first reference hole A and the second reference hole B.
- the second interval 213 may be narrower than the first interval 212.
- the optical fiber 340 and the lens unit 320 which are in optical communication with the optical device 215, are seated and fixed, and the first reference hole A is fixed.
- the method may further include preparing and installing an optical fiber fixing block 300 having a first post C inserted into the second post hole and a second post D inserted into the second reference hole B (S230). .
- the alignment method of the second embodiment is characterized in that there is a difference between the first embodiment and the setting position at which the optical device 215 is disposed.
- the effects of the present invention due to these differences will be described later in detail.
- Posts C and D of the present exemplary embodiment may be portions protruding to one side from the optical fiber fixing block 300.
- the posts (C, D) may be manufactured by injection molding integrally with the optical fiber fixing block 300.
- the second post D is inserted into the second reference hole B more loosely than when the first post C is inserted into the first reference hole A.
- the diameter of the second post D may be smaller than the diameter of the first post C, whereby the second post D is looser than the first post C. Can be inserted into B).
- the diameter of the second reference hole B is greater than the diameter of the first reference hole A, so that the second post D is looser than the first post C. It can be inserted into (B).
- first reference hole A and the second reference hole B are arranged along the longitudinal direction of the optical fiber 340.
- first post C and the second post D are also arranged along the longitudinal direction of the optical fiber 340. This arrangement can reduce the width of the base plate 210, unlike the prior art holes 104 and posts 105 shown in FIG. 1A arranged in the direction and extension line in which the optical elements 115 are arranged. Unnecessary space can be reduced in light alignment.
- the 10 illustrates a first reference hole A, a second reference hole B, and an optical element 215 on the base plate 210.
- the coordinate axis is represented by the x-axis in the longitudinal direction of the base plate 210, the y-axis in the width direction, and the z-axis in the thickness direction.
- FIG. 12 illustrates a point O corresponding to the first reference hole A, a point N corresponding to the second reference hole B, and a point M corresponding to the optical element 215.
- Point M, point N, and point O may be located on first reference line 211.
- the angle ⁇ of FIG. 12 is an angle generated using the z-axis as the rotation axis, and the line forming the angle ⁇ with the first reference line 211 is the third reference line 350 and the first post C of the optical fiber fixing block 300.
- a line passing through the center of the first post C and the center of the second post D may be the third reference line 350.
- An interval between the center of the first post C and the center of the second post D may be spaced apart by the first interval 212. That is, the distance between the center of the first post C and the center of the second post D may be equal to the distance between the center of the first reference hole A and the center of the second reference hole B.
- the third reference line 350 may move finely in a clockwise or counterclockwise direction with the z-axis as the rotation axis, the first reference line 211 and the third reference line 350 may or may not coincide. have.
- a fourth reference line 216 is formed in the direction parallel to the z axis.
- the fourth reference line 216 refers to an imaginary line perpendicular to the first reference line 211 and the second reference line 214 and intersecting the second reference line 214.
- the optical device 215 and the lens unit 320 may be disposed on the fourth reference line 216. That is, the optical element 215 and the lens unit 320 may be disposed coaxially.
- FIG 5 illustrates a point O 'corresponding to the first reference hole A' and a second reference hole B '.
- the movement of the longitudinal axis of the optical fiber fixing block is represented by the third reference line 350 '.
- the ratio of the line segment O'M 'and the line segment O'N' is equal to the ratio of the distance that the point M 'has moved by Q' and the distance that the point N 'has moved by P'.
- Q ' represents a distance moved by the lens unit
- P' represents a distance moved finely in the state where the post of the optical fiber fixing block is fitted into the circular hole B '.
- Embodiment 2 of the present invention as shown in FIG. 12, the third reference line 350 in which the optical fiber fixing block 300 is finely moved in the clockwise or counterclockwise direction by the angle ⁇ . Is shown.
- the ratio of the line segment OM and the line segment ON can be expressed as the ratio of the distance that the point M has moved by Q and the point N has moved by P.
- the values Q and Q' representing the deviation of the lens part when P is shifted by P are Q '> Q.
- the deviation of the lens portion is more insensitive (or smaller) than the deviation of the lens portion due to the prior application.
- Embodiment 1 since the optical element and the lens unit are arranged outside the reference hole, the manufacturing process can be simplified because the optical element and the lens unit are relatively free from interference with adjacent members.
- the optical element alignment method insensitive to the variation of the second embodiment has the same or better effect than the first embodiment as follows.
- the deviation generated during the optical alignment of the lens unit 320 and the optical device 215 can be reduced.
- the tolerance when manufacturing the reference holes (A, B) of the base plate 210 can be made larger under this condition.
- a separate part such as the alignment plate 220 ′ of the first embodiment may not be used. That is, in the first embodiment, the alignment plate 220 'may be required with the strict precision required for the optical alignment of the lens unit 320 and the optical element 215, but this embodiment may eliminate the necessity. This not only makes the process easier when manufacturing parts, but also increases the economics.
- the optical device 215 may be positioned between the reference holes A and B to reduce the volume of the entire optical transceiver. Therefore, it can meet the recent trend of compactization of information and communication equipment.
- 14A shows a side view of the optical fiber fixing block according to the second embodiment.
- 14B shows a top view of the optical fiber fixing block according to the second embodiment.
- the optical fiber fixing block 300 may be fixed to the optical fiber 340 therein.
- the optical fiber fixing block 300 has an optical fiber guide part 310 for guiding the optical fiber 340 inward.
- the optical fiber guide part 310 may be formed in one straight line, or may be formed to gradually increase in cross-sectional area from an inner side to an opening located at an outer side thereof to guide the end of the optical fiber 340 to a predetermined position.
- the optical fiber 340 by the optical fiber guide portion 310 is inserted into the optical fiber fixing block 300 by the mounting length (L) along the longitudinal direction is seated.
- the optical fiber 340 has to secure a mounting length (L) that is seated on the optical fiber fixing block 300 by a predetermined length. By securing the seating length (L), the stability and durability of the optical fiber and the optical transceiver can be ensured.
- the optical fiber guide part 310 serves to guide the optical fiber 340 to be disposed while securing the seating length L along the longitudinal direction.
- the ratio of the second spacing 213 to the first spacing 212 may be set such that the optical fiber 340 is optically aligned with the optical device 215 within a tolerance range.
- the longitudinal direction of the optical fiber 340 seated and fixed to the optical fiber fixing block 300 may include the same direction as that of the first reference line 211 or the third reference line 350. As described above, the optical fiber 340 needs to secure a seating length L by a predetermined length.
- the optical device 215 and the lens unit 320 may be disposed on the fourth reference line 216.
- the optical device 215 and the lens unit 320 may be disposed while maintaining the third gap 217.
- 15 is a plan view showing a plurality of optical devices according to the second embodiment is formed on the base plate.
- optical device 215 illustrates a case where there are a plurality of optical elements 215 unlike the embodiment shown in FIG. 11.
- four optical elements 215 are formed on the base plate 210 and are arranged on the second reference line 214 at a predetermined interval in a line.
- the optical device 215 may be arranged in at least two columns along the second reference line 214. Further, in the number, the optical elements 215 may be made of, for example, three, four, six, eight, etc. according to the required specifications.
- Fig. 16 is a block diagram showing an optical device aligning method according to the third embodiment.
- An alignment method of an optical device 215 ' may include providing an optical device 215' (S310); Preparing a base plate 210 'having a first reference hole A' and a second reference hole B '(S320); Disposing the optical device 215 'at a position determined based on the first reference hole A' and the second reference hole B 'on the base plate 210 (S330); And an optical fiber fixing block 300 'in which the optical fiber 340' and the lens unit 320 'which are in optical communication with the optical element 215' are fixedly installed, and the first post C 'and the second post D' are formed.
- first post C ' is inserted into the first reference hole A'
- second post D ' is inserted into the second reference hole B'
- second post D ' May be inserted more loosely than the first post (C ').
- the position may include a first reference line 211 'passing through the first reference hole A' and the second reference hole B '; And a second reference line 211 ′ that intersects the second reference line 211 ′ and is positioned at a second distance 213 ′ from the first reference hole A ′, and has a second reference hole with the first reference hole A ′ interposed therebetween.
- the second gap 213 ′ may be narrower than the first gap 212 ′.
- the diameter of the second post D ' may be smaller than the diameter of the first post C'.
- the diameter of the second reference hole B ' may be larger than the diameter of the first reference hole A'.
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Abstract
Description
Claims (20)
- 광소자를 마련하는 단계; 및상기 광소자가 설정위치에 배치되고, 제1 기준홀과 상기 제1 기준홀과 제1 간격을 두고 형성되는 제2 기준홀을 가지는 베이스플레이트를 마련하는 단계; 를 포함하는 것을 특징으로 하는 광소자 정렬방법.
- 제 1항에 있어서,상기 설정위치는 상기 제1 기준홀과 상기 제2 기준홀을 통과하는 제1 기준선; 및상기 제1 기준선과 교차하고, 제1 기준홀로부터 제2 간격을 둔 위치에 위치하며, 상기 제1 기준홀을 사이에 두고 상기 제2 기준홀의 맞은편에 위치하는 제2 기준선에 의하여 결정되는 것을 특징으로 하는 광소자 정렬방법.
- 제 1항에 있어서,상기 제1 기준홀과 상기 제2 기준홀은 상기 베이스플레이트에 설치되는 정렬플레이트 상에 형성된 것을 특징으로 하는 광소자 정렬방법.
- 제 3항에 있어서,상기 정렬플레이트는 2개 이상의 고정포스트들이 형성되고 상기 베이스플레이트는 상기 고정포스트들의 위치와 대응되는 위치에 고정홀들이 형성되며, 상기 정렬플레이트는 상기 고정포스트들이 상기 고정홀들에 삽입되어 설치되는 것을 특징으로 하는 광소자 정렬방법.
- 제4항에 있어서,상기 고정포스트들과 상기 고정홀들은 상기 제1기준선 상에 위치하는 것을 특징으로 하는 광소자 정렬방법.
- 제3항에 있어서,상기 정렬플레이트는 플라스틱 사출성형방법으로 제작되는 것을 특징으로 하는 광소자 정렬방법.
- 제 1항에 있어서,상기 설정위치는 상기 제1 기준홀과 상기 제2 기준홀을 통과하는 제1 기준선; 및상기 제1 기준선과 교차하고, 제1 기준홀로부터 제2 간격을 둔 위치에 위치하며, 상기 제1 기준홀과 상기 제2 기준홀의 사이에 위치하는 제2 기준선에 의하여 결정되는 것을 특징으로 하는 광소자 정렬방법.
- 제 2항 또는 제 7항에 있어서,상기 제2간격은 상기 제1간격보다 더 좁은 것을 특징으로 하는 광소자 정렬방법.
- 제 2항 또는 제 7항에 있어서,상기 광소자와 광통신하는 광섬유 및 렌즈부가 안착되어 고정 설치되고, 상기 제1 기준홀에 삽입되는 제1 포스트와 상기 제2 기준홀에 삽입되는 제2 포스트를 가지되,상기 제2 포스트는 상기 제1 포스트가 상기 제1 기준홀에 삽입되는 것보다 더 헐겁게 상기 제2 기준홀에 삽입되는 광섬유고정블럭을 마련하여 설치하는 단계를 추가로 포함하는 것을 특징으로 하는 광소자 정렬방법.
- 제 2항 또는 제 7항에 있어서,상기 제1 간격에 대한 상기 제2 간격의 비는 상기 광섬유 및 상기 렌즈부가 상기 광소자와 허용 오차범위 내에서 광 정렬하도록 설정된 것을 특징으로 하는 광소자 정렬방법.
- 제 2항 또는 제 7항에 있어서,상기 제2 기준홀의 직경은 상기 제1 기준홀의 직경보다 더 큰 것을 특징으로 하는 광소자 정렬방법.
- 제 9항에 있어서,상기 제2 포스트의 직경은 상기 제1 포스트의 직경보다 더 작은 것을 특징으로 하는 광소자 정렬방법.
- 제 9항에 있어서,상기 광섬유가 안착된 길이방향은 상기 제1 기준선의 방향과 같은 방향을 포함하는 것을 특징으로 하는 광소자 정렬방법.
- 제 1항에 있어서,상기 광소자는 복수 개인 것을 특징으로 하는 광소자 정렬방법.
- 제 14항에 있어서,상기 광소자는 상기 제2 기준선 상에서 일렬로 배열되는 것을 특징으로 하는 광소자 정렬방법.
- 제 14항에 있어서,상기 광소자는 상기 제2 기준선을 따라 적어도 2개 이상의 열로 배열되는 것을 특징으로 하는 광소자 정렬방법.
- 광소자를 마련하는 단계;제1 기준홀과 제2 기준홀을 가지는 베이스플레이트를 마련하는 단계;상기 베이스플레이트상의 상기 제1 기준홀과 상기 제2 기준홀을 기준으로 하여 결정된 위치에 상기 광소자를 배치하는 단계; 및상기 광소자와 광통신하는 광섬유 및 렌즈부가 고정설치되고, 제1 포스트와 제2 포스트가 형성된 광섬유고정블럭을 설치하여 상기 광섬유와 상기 광소자를 광정렬시키는 단계;를 포함하고, 상기 광정렬은 상기 제1기준홀에 상기 제1 포스트가 삽입되고, 상기 제2 기준홀에 상기 제2 포스트가 삽입되되, 제2 포스트는 제1 포스트보다 더 헐겁게 삽입되어 이루어지는 것을 특징으로 하는 광소자 정렬방법.
- 제 17항에 있어서,상기 위치는 상기 제1 기준홀과 상기 제2 기준홀을 통과하는 제1 기준선; 및상기 제1 기준선과 교차하고, 제1 기준홀로부터 제2 간격을 둔 위치에 위치하며, 상기 제1 기준홀을 사이에 두고 상기 제2 기준홀의 맞은편에 위치하는 제2 기준선에 의하여 결정되되,상기 제2 간격은 상기 제1 간격보다 더 좁은 것을 특징으로 하는 광소자 정렬방법.
- 제17항에 있어서,상기 제2 포스트의 직경은 상기 제1 포스트의 직경보다 더 작은 것을 특징으로 하는 광소자 정렬방법.
- 제17항에 있어서,상기 제2 기준홀의 직경은 상기 제1 기준홀의 직경보다 더 큰 것을 특징으로 하는 광소자 정렬방법.
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| JP2015550351A JP6106284B2 (ja) | 2013-11-28 | 2014-11-28 | 光素子のアライメント装置及び方法 |
| CN201480073703.5A CN106104339B (zh) | 2013-11-28 | 2014-11-28 | 光元件对齐装置及方法 |
| EP14865985.7A EP3076216B1 (en) | 2013-11-28 | 2014-11-28 | Optical element alignment method |
| US14/750,211 US9423569B2 (en) | 2013-11-28 | 2015-06-25 | Method and apparatus for aligning optical element |
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| Application Number | Priority Date | Filing Date | Title |
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| KR10-2013-0146596 | 2013-11-28 | ||
| KR20130146596A KR101502318B1 (ko) | 2013-11-28 | 2013-11-28 | 광소자 정렬방법 |
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| US14/750,211 Continuation US9423569B2 (en) | 2013-11-28 | 2015-06-25 | Method and apparatus for aligning optical element |
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| WO2015080529A1 true WO2015080529A1 (ko) | 2015-06-04 |
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2013
- 2013-11-28 KR KR20130146596A patent/KR101502318B1/ko active Active
-
2014
- 2014-11-28 WO PCT/KR2014/011589 patent/WO2015080529A1/ko not_active Ceased
- 2014-11-28 JP JP2015550351A patent/JP6106284B2/ja active Active
- 2014-11-28 EP EP14865985.7A patent/EP3076216B1/en active Active
- 2014-11-28 CN CN201480073703.5A patent/CN106104339B/zh active Active
-
2015
- 2015-06-25 US US14/750,211 patent/US9423569B2/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20080040416A (ko) * | 2006-11-03 | 2008-05-08 | 한국전자통신연구원 | 광학 벤치를 구비하는 광통신 모듈 |
| JP2008158473A (ja) * | 2006-11-29 | 2008-07-10 | Sumitomo Bakelite Co Ltd | 光配線部品及び光素子実装部品 |
| KR20120029673A (ko) * | 2010-09-17 | 2012-03-27 | 주식회사 유나이브 | 부품의 수동 정렬을 구현하는 광 송수신 장치 및 부품의 수동 정렬방법 |
Also Published As
| Publication number | Publication date |
|---|---|
| EP3076216B1 (en) | 2020-06-03 |
| JP6106284B2 (ja) | 2017-03-29 |
| CN106104339A (zh) | 2016-11-09 |
| EP3076216A4 (en) | 2017-07-26 |
| KR101502318B1 (ko) | 2015-03-13 |
| CN106104339B (zh) | 2018-02-02 |
| US20150293309A1 (en) | 2015-10-15 |
| US9423569B2 (en) | 2016-08-23 |
| JP2016502152A (ja) | 2016-01-21 |
| EP3076216A1 (en) | 2016-10-05 |
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