CN106908896A - A kind of method and device for making fiber grating - Google Patents
A kind of method and device for making fiber grating Download PDFInfo
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- CN106908896A CN106908896A CN201710211461.7A CN201710211461A CN106908896A CN 106908896 A CN106908896 A CN 106908896A CN 201710211461 A CN201710211461 A CN 201710211461A CN 106908896 A CN106908896 A CN 106908896A
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- 239000000835 fiber Substances 0.000 title claims abstract description 143
- 238000000034 method Methods 0.000 title claims abstract description 26
- 239000013307 optical fiber Substances 0.000 claims abstract description 50
- 238000004519 manufacturing process Methods 0.000 claims abstract description 36
- 239000011247 coating layer Substances 0.000 claims description 12
- 238000001228 spectrum Methods 0.000 description 8
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 238000002310 reflectometry Methods 0.000 description 3
- 206010034972 Photosensitivity reaction Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000036211 photosensitivity Effects 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
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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
- G02B6/02—Optical fibres with cladding with or without a coating
- G02B6/02057—Optical fibres with cladding with or without a coating comprising gratings
- G02B6/02076—Refractive index modulation gratings, e.g. Bragg gratings
- G02B6/02123—Refractive index modulation gratings, e.g. Bragg gratings characterised by the method of manufacture of the grating
- G02B6/02142—Refractive index modulation gratings, e.g. Bragg gratings characterised by the method of manufacture of the grating based on illuminating or irradiating an amplitude mask, i.e. a mask having a repetitive intensity modulating pattern
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- Manufacturing & Machinery (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
- Diffracting Gratings Or Hologram Optical Elements (AREA)
Abstract
The invention provides a kind of method and device for making fiber grating, methods described includes：The band fibre naked fibre that will remove stage casing coat using fixture is placed in the side of phase mask plate, adjust it is described with it is fine be 0.02~1mm the distance between with the mask plate；The width of slit is adjusted to 10~20mm so that exposed on post lens after the reflected mirror of light beam, beam expanding lens that laser sends, then can be irradiated on the phase mask plate after being focused on through the slit；Adjust the post lens so that the light beam produces diffraction pattern, and causes that diffraction pattern is radiated on the band fibre, obtains the fiber grating；Wherein, four optical fiber are at least included in the band fibre, at least four optical fiber is while being fitted into the fixture；In this way, be to be fitted into fixture by least four optical fiber simultaneously, after single exposure, at least four fiber gratings can be produced, improve production efficiency, and then reduce production cost.
Description
Technical Field
The invention belongs to the technical field of optics, and particularly relates to a method and a device for manufacturing a fiber grating.
Background
The fiber grating is a passive fiber device, and its basic manufacturing method is that ultraviolet laser exposes the fiber with photosensitivity, and forms a nick on the surface of the fiber core, so that the refractive index of the photosensitive fiber changes periodically along the axial direction, and thus a phase grating of permanent space is formed, and this fiber with periodic change of refractive index is called fiber grating.
In the prior art, when the fiber grating is manufactured, only one optical fiber can be usually produced by one-time exposure, the method reduces the production efficiency, can not meet the requirement of the market on the number of the fiber gratings, and simultaneously increases the production cost.
Accordingly, the present invention is directed to a method and apparatus for fabricating a fiber grating that solves the above-mentioned problems of the prior art.
Disclosure of Invention
Aiming at the problems in the prior art, the embodiment of the invention provides a method and a device for manufacturing a fiber grating, which are used for solving the technical problems of low manufacturing efficiency and high production cost in the prior art when the fiber grating is manufactured.
The invention provides a method for manufacturing a fiber grating, which comprises the following steps:
placing the bare fiber with the middle coating layer removed on one side of a phase mask plate by using a clamp, and adjusting the distance between the bare fiber and the mask plate to be 0.02-1 mm; please confirm
Adjusting the width of the slit to 10-20 mm, so that a light beam emitted by a laser passes through a reflector and a beam expander and then irradiates onto a cylindrical lens, and is focused by the slit and then can irradiate onto the phase mask plate;
adjusting the cylindrical lens to enable the light beam to generate diffraction light spots, and enabling the diffraction light spots to irradiate the ribbon fiber to obtain the fiber grating; wherein the ribbon fiber comprises at least four optical fibers, and the at least four optical fibers are simultaneously loaded into the clamp.
In the foregoing solution, the adjusting the cylindrical lens to make the light beam generate a diffraction spot includes:
and adjusting the distance and the included angle between the cylindrical lens and the optical fiber to transversely compress the light beam emitted by the laser into a light spot.
In the above scheme, the single pulse energy of the laser beam is at least 5.0 mJ.
In the scheme, the height of the light spot is at least 1.5 mm.
In the above scheme, the parallelism of each optical fiber in the ribbon fiber is kept consistent, and the perpendicularity of each optical fiber is kept consistent.
In the scheme, the frequency of the laser is 30-100 Hz.
The present invention also provides an apparatus for fabricating a fiber grating, the apparatus comprising: the device comprises a laser, a reflector, a beam expander, a cylindrical lens, a slit, a phase mask plate and a clamp; wherein,
the laser and the reflector are positioned at the same horizontal position, and the reflector is vertical to the beam expanding beam;
the cylindrical lens is positioned on one side of the beam expander, so that the light beam emitted by the laser irradiates on the cylindrical lens;
the slit is positioned on one side of the cylindrical lens, and the phase mask plate is positioned on one side of the slit, so that the light beam is focused by the slit and then irradiates the phase mask plate;
the bare fiber with the fiber arranged in the clamp is positioned on one side of the phase mask plate, the light beam generates diffraction light spots by adjusting the cylindrical lens, and the diffraction light spots irradiate on the bare fiber with the fiber to obtain the fiber grating; the ribbon fiber at least comprises four optical fibers, and the at least four optical fibers are simultaneously loaded in the clamp.
In the above scheme, the single pulse energy of the laser beam is at least 5.0 mJ.
In the above scheme, the parallelism of each optical fiber in the ribbon fiber is kept consistent, and the perpendicularity of each optical fiber is kept consistent.
In the scheme, the height of the light spot is at least 1.5 mm.
The invention provides a method and a device for manufacturing fiber gratings, wherein the method comprises the following steps: placing the bare fiber with the middle coating layer removed on one side of a phase mask plate by using a clamp, and adjusting the distance between the bare fiber and the mask plate to be 0.02-1 mm; adjusting the width of the slit to 10-20 mm, so that a light beam emitted by a laser passes through a reflector and a beam expander and then irradiates onto a cylindrical lens, and is focused by the slit and then can irradiate onto the phase mask plate; adjusting the cylindrical lens to enable the light beam to generate diffraction light spots, and enabling the diffraction light spots to irradiate the ribbon fiber to obtain the fiber grating; wherein the ribbon fiber comprises at least four optical fibers, and the at least four optical fibers are simultaneously loaded into the clamp; therefore, at least four optical fibers are simultaneously arranged in the clamp, and after one-time exposure, at least four fiber gratings can be manufactured, so that the production efficiency is improved, and the production cost is reduced.
Drawings
Fig. 1 is a schematic flow chart of a method for manufacturing a fiber grating according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of an apparatus for manufacturing a fiber grating according to a second embodiment of the present invention;
fig. 3 is a reflection spectrum of a first fiber grating manufactured according to a third embodiment of the present invention;
fig. 4 is a reflection spectrum of a second fiber grating manufactured according to a third embodiment of the present invention;
FIG. 5 is a reflection spectrum of a third fiber grating manufactured according to the third embodiment of the present invention;
fig. 6 is a reflection spectrum of a fourth manufactured fiber grating according to the third embodiment of the present invention;
fig. 7 is a reflection spectrum of a fifth fiber grating manufactured according to the third embodiment of the present invention;
fig. 8 is a reflection spectrum of a sixth fiber grating manufactured according to the third embodiment of the present invention;
fig. 9 is a reflection spectrum of a seventh fiber grating manufactured according to the third embodiment of the present invention;
fig. 10 is a reflection spectrum of an eighth fiber grating manufactured according to the third embodiment of the present invention.
Detailed Description
The method aims to solve the technical problems of low manufacturing efficiency and high production cost when the fiber bragg grating is manufactured in the prior art. The invention provides a method and a device for manufacturing fiber gratings, wherein the method comprises the following steps: placing the bare fiber with the middle coating layer removed on one side of a phase mask plate by using a clamp, and adjusting the distance between the bare fiber and the mask plate to be 0.02-1 mm; adjusting the width of the slit to 10-20 mm, so that a light beam emitted by a laser passes through a reflector and a beam expander and then irradiates onto a cylindrical lens, and is focused by the slit and then can irradiate onto the phase mask plate; adjusting the cylindrical lens to enable the light beam to generate diffraction light spots, and enabling the diffraction light spots to irradiate the ribbon fiber to obtain the fiber grating; wherein the ribbon fiber comprises at least four optical fibers, and the at least four optical fibers are simultaneously loaded into the clamp.
The technical solution of the present invention is further described in detail by the accompanying drawings and the specific embodiments.
Example one
Before describing the manufacturing method provided in this embodiment, in order to better understand the content of this document, an apparatus for manufacturing a chirped fiber grating is described, as shown in fig. 1, the apparatus includes: the device comprises a laser 1, a reflector 2, a beam expander 3, a cylindrical lens 4, a slit 5 and a phase mask plate 6; the laser 1 and the reflector 2 are located at the same horizontal position, and the reflector 2 is perpendicular to the beam expander 3; the cylindrical lens 4 is located on one side of the beam expander 3, the slit 5 is located on one side of the cylindrical lens 4, and the phase mask plate 6 is located on one side of the slit 5, so that the light beam is focused by the slit and then irradiates onto the phase mask plate 6.
Accordingly, this embodiment provides a method for manufacturing a fiber grating, which mainly forms a fiber grating by transversely placing a bare fiber section with a fiber, from which a coating layer is removed, in a phase mask grating region and performing one ultraviolet exposure, as shown in fig. 2, where the method includes:
s201, placing the bare optical fiber with the middle coating layer removed on one side of a phase mask plate by using a clamp, and adjusting the distance between the optical fiber and the mask plate to be 0.02-1 mm.
In the step, before the fiber grating is manufactured, the coating layer of the band fiber needs to be removed, the bare band fiber with the middle coating layer removed is placed on one side of the phase mask plate by using a clamp, and the distance between the band fiber and the mask plate is adjusted to be 0.02-1 mm. Wherein the length of the coating layer is 40 mm. The ribbon fiber at least comprises four optical fibers, and the at least four optical fibers are simultaneously loaded into the clamp; the clamp can make the parallelism of the at least four optical fibers consistent and the verticality of each optical fiber consistent so as to manufacture the at least four optical fibers by one-time exposure.
When the distance between the fiber and the mask plate is adjusted, an image controller CCD is arranged above the space between the fiber and the mask plate, the CCD collects image information of the distance between the fiber and the mask plate in real time and sends the image information to a computer, a worker can see the image information from the computer, the current distance is adjusted by using a scale on the CCD, and the current distance is adjusted to be 0.02-1 mm, preferably 0.03mm, 0.04mm or 0.06 mm. The current distance in this embodiment is 0.03 mm.
S202, adjusting the width of the slit to 10-20 mm, enabling light beams emitted by the laser to pass through the reflector and the beam expander and then irradiate onto the cylindrical lens, and then the light beams can irradiate onto the phase mask plate after being focused by the slit.
In the step, firstly, an ultraviolet laser is started, and the single pulse energy of the ultraviolet laser is adjusted to be at least 5.0 mJ; the wavelength of the laser is 248nm, and the frequency of the laser is 30-100 Hz.
And then adjusting the width of the slit to 10-20 mm, so that a light beam emitted by the laser irradiates onto the cylindrical lens after passing through the reflector and the beam expander, and irradiates onto the phase mask plate after being focused by the slit. In this embodiment, the width of the slit is 15 mm.
S203, adjusting the cylindrical lens to enable the light beam to generate diffraction light spots, enabling the diffraction light spots to irradiate the ribbon fiber, and obtaining the fiber grating.
In the step, after a laser beam is focused by a cylindrical lens through a slit and then irradiated on a phase mask plate, the distance and the included angle between the cylindrical lens and a fiber are adjusted, so that the beam generates a diffraction spot, the position of the cylindrical lens is adjusted, so that the diffraction spot is irradiated on a bare fiber area with the fiber, and when the reflectivity, the bandwidth and the central wavelength of the fiber reach preset target values, a laser is closed, and the fiber grating is obtained. Here, the light spot is shaped as a square spot having a height of at least 1.5 mm.
Example two
Corresponding to the first embodiment, this embodiment also provides an apparatus for manufacturing a fiber grating, referring to fig. 1, the apparatus includes: the device comprises a laser 1, a reflector 2, a beam expander 3, a cylindrical lens 4, a slit 5 and a phase mask plate 6; the laser 1 and the reflector 2 are located at the same horizontal position, and the reflector 2 is perpendicular to the beam expander 3; the cylindrical lens 4 is located on one side of the beam expander 3, the slit 5 is located on one side of the cylindrical lens 4, and the phase mask plate 6 is located on one side of the slit 5, so that the light beam is focused by the slit and then irradiates onto the phase mask plate 6.
Before manufacturing the fiber grating, the coating of the band fiber needs to be removed, the bare band fiber 7 with the coating removed is placed on one side of a phase mask plate 6 by using a clamp, and the distance between the band fiber 7 and the mask plate is adjusted to be 0.02-1 mm. Wherein the length of the coating layer is 40 mm. The ribbon fiber 7 at least comprises four optical fibers, and the at least four optical fibers are simultaneously loaded into the clamp; the clamp can make the parallelism of the at least four optical fibers consistent and the verticality of each optical fiber consistent so as to manufacture the at least four optical fibers by one-time exposure.
When the distance between the fiber 7 and the mask plate 6 is adjusted, an image controller CCD is arranged above the fiber 7 and the mask plate 6, the CCD collects image information of the distance between the fiber 7 and the mask plate 6 in real time and sends the image information to a computer, and a worker can see the image information from the computer, adjust the current distance by using a scale on the CCD and adjust the current distance to 0.02-1 mm, preferably 0.03mm, 0.04mm or 0.06 mm. The current distance in this embodiment is 0.03 mm.
After the distance between the optical fiber 7 and the mask plate 6 is adjusted, the ultraviolet laser 1 is opened, and the single pulse energy of the ultraviolet laser 1 is adjusted to be at least 5.0 mJ; the wavelength of the laser 1 is 248 nm.
And then adjusting the width of the slit 5 to 10-20 mm, so that the light beam emitted by the laser 1 irradiates onto the cylindrical lens 4 after passing through the reflector 2 and the beam expander 3, and irradiates onto the phase mask plate 6 after being focused by the slit 5. In this embodiment, the width of the slit 5 is 15 mm.
After the width of the slit 5 is adjusted, the cylindrical lens 4 is adjusted to enable the light beam to generate diffraction light spots, and the diffraction light spots are irradiated on the ribbon fiber 7 to obtain the fiber grating.
Specifically, after a laser beam is focused by a cylindrical lens 4 through a slit 5 and then irradiated on a phase mask, the distance and the included angle between the cylindrical lens 4 and a ribbon fiber 7 are adjusted, so that the beam generates a diffraction spot, the position of the cylindrical lens 4 is adjusted, so that the diffraction spot is irradiated on a bare fiber area of the ribbon fiber 7, and when the reflectivity, the bandwidth and the central wavelength of the fiber reach preset target values, a laser is turned off, and the fiber grating is obtained. Here, the light spot is a square light spot having a height of at least 1.5 mm. Thus, at least four optical fibers can be fabricated in one exposure.
EXAMPLE III
In practical applications, when the manufacturing method provided in the first embodiment and the manufacturing apparatus provided in the second embodiment are used to manufacture an optical fiber, the specific steps are as follows:
before manufacturing the fiber grating, the coating of the band fiber needs to be removed, the bare band fiber with the coating removed is placed on one side of a phase mask plate by using a clamp, and the distance between the band fiber and the mask plate is adjusted to be 0.03 mm. Wherein the length of the coating layer is 40 mm. The ribbon fiber at least comprises four optical fibers, and the at least four optical fibers are simultaneously loaded into the clamp; the clamp can make the parallelism of the at least four optical fibers consistent and the verticality of each optical fiber consistent so as to manufacture the at least four optical fibers by one-time exposure. The number of fibers in the ribbon in this embodiment is 8.
When the distance between the fiber and the mask plate is adjusted, an image controller CCD is arranged above the space between the fiber and the mask plate, the CCD collects image information of the distance between the fiber and the mask plate in real time and sends the image information to a computer, and a worker can see the image information from the computer, adjust the current distance by using a scale on the CCD and adjust the current distance to be 0.05 mm.
Firstly, turning on an ultraviolet laser, and adjusting the single pulse energy of the ultraviolet laser to 5.0 mJ; the wavelength of the laser is 248 nm.
And then adjusting the width of the slit to 16mm, so that the light beam emitted by the laser irradiates onto the cylindrical lens after passing through the reflector and the beam expander, and irradiates onto the phase mask plate after being focused by the slit.
And adjusting the cylindrical lens to enable the light beam to generate diffraction light spots, and enabling the diffraction light spots to irradiate the ribbon fiber to obtain the fiber grating.
Specifically, after a laser beam is focused by a cylindrical lens through a slit and then irradiated on a phase mask plate, the distance and the included angle between the cylindrical lens and a fiber are adjusted to enable the beam to generate a diffraction spot, the position of the cylindrical lens is adjusted to enable the diffraction spot to be irradiated on a bare fiber area with the fiber, and when the reflectivity, the bandwidth and the central wavelength of the fiber reach preset target values, a laser is turned off to obtain the fiber grating. Here, the light spot is a square light spot having a height of 3.0 mm. Thus, eight optical fibers are manufactured at one time.
Here, the parameters of the eight manufactured optical fibers include: the center wavelength, reflectance and bandwidth can be specifically shown in table 1:
TABLE 1
Here, the reflection pattern of the first fiber grating is shown in fig. 3, the reflection pattern of the second fiber grating is shown in fig. 4, the reflection pattern of the third fiber grating is shown in fig. 5, the reflection pattern of the fourth fiber grating is shown in fig. 6, the reflection pattern of the fifth fiber grating is shown in fig. 7, the reflection pattern of the sixth fiber grating is shown in fig. 8, the reflection pattern of the seventh fiber grating is shown in fig. 9, and the reflection pattern of the eighth fiber grating is shown in fig. 10.
The method and the device for manufacturing the fiber bragg grating provided by the embodiment of the invention have the following beneficial effects that:
the invention provides a method and a device for manufacturing fiber gratings, wherein the method comprises the following steps: placing the bare optical fiber with the coating layer removed on one side of a phase mask plate by using a clamp, and adjusting the distance between the optical fiber and the mask plate to be 0.02-1 mm; adjusting the width of the slit to 10-20 mm, so that a light beam emitted by a laser passes through a reflector and a beam expander and then irradiates onto a cylindrical lens, and is focused by the slit and then can irradiate onto the phase mask plate; adjusting the cylindrical lens to enable the light beam to generate diffraction light spots, and enabling the diffraction light spots to irradiate the ribbon fiber to obtain the fiber grating; wherein the ribbon fiber comprises at least four optical fibers, and the at least four optical fibers are simultaneously loaded into the clamp; therefore, at least four optical fibers are simultaneously arranged in the clamp, and after one-time exposure, at least four fiber gratings can be manufactured, so that the production efficiency is improved, and the production cost is reduced.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, and any modifications, equivalents, improvements, etc. that are within the spirit and principle of the present invention should be included in the present invention.
Claims (10)
1. A method of fabricating a fiber grating, the method comprising:
placing the bare fiber with the middle coating layer removed on one side of a phase mask plate by using a clamp, and adjusting the distance between the bare fiber and the mask plate to be 0.02-1 mm; please confirm
Adjusting the width of the slit to 10-20 mm, so that a light beam emitted by a laser passes through a reflector and a beam expander and then irradiates onto a cylindrical lens, and is focused by the slit and then can irradiate onto the phase mask plate;
adjusting the cylindrical lens to enable the light beam to generate diffraction light spots, and enabling the diffraction light spots to irradiate the ribbon fiber to obtain the fiber grating; wherein the ribbon fiber comprises at least four optical fibers, and the at least four optical fibers are simultaneously loaded into the clamp.
2. The method of claim 1, wherein said adjusting said cylindrical lens such that said beam produces a diffraction spot comprises:
and adjusting the distance and the included angle between the cylindrical lens and the optical fiber to transversely compress the light beam emitted by the laser into a light spot.
3. The method of claim 1, wherein the laser beam has a single pulse energy of at least 5.0 mJ.
4. The method of claim 2, wherein the height of the spot is at least 1.5 mm.
5. The method of claim 1, wherein the parallelism of the fibers in the ribbon is consistent and the verticality of the fibers is consistent.
6. The method of claim 1, wherein the laser has a frequency of 30 to 100 Hz.
7. An apparatus for fabricating a fiber grating, the apparatus comprising: the device comprises a laser, a reflector, a beam expander, a cylindrical lens, a slit, a phase mask plate and a clamp; wherein,
the laser and the reflector are positioned at the same horizontal position, and the reflector is vertical to the beam expanding beam;
the cylindrical lens is positioned on one side of the beam expander, so that the light beam emitted by the laser irradiates on the cylindrical lens;
the slit is positioned on one side of the cylindrical lens, and the phase mask plate is positioned on one side of the slit, so that the light beam is focused by the slit and then irradiates the phase mask plate;
the bare fiber with the fiber arranged in the clamp is positioned on one side of the phase mask plate, the light beam generates diffraction light spots by adjusting the cylindrical lens, and the diffraction light spots irradiate on the bare fiber with the fiber to obtain the fiber grating; the ribbon fiber at least comprises four optical fibers, and the at least four optical fibers are simultaneously loaded in the clamp.
8. The apparatus of claim 7 wherein the laser beam has a single pulse energy of at least 5.0 mJ.
9. The apparatus of claim 7, wherein the parallelism of the fibers in the ribbon is consistent and the verticality of the fibers is consistent.
10. The apparatus of claim 7, wherein the height of the spot is at least 1.5 mm.
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| CN201710211461.7A CN106908896A (en) | 2017-03-31 | 2017-03-31 | A kind of method and device for making fiber grating |
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| CN201710211461.7A CN106908896A (en) | 2017-03-31 | 2017-03-31 | A kind of method and device for making fiber grating |
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| CN1280303A (en) * | 1999-07-07 | 2001-01-17 | 三星电子株式会社 | Equipment and method for producing optic fibre grating |
| CN101178459A (en) * | 2007-12-06 | 2008-05-14 | 西安盛佳光电有限公司 | Manufacturing method of polarization maintaining optical fiber apodization double gratings |
| CN101900576A (en) * | 2010-07-08 | 2010-12-01 | 北京交通大学 | Method for manufacturing fiber bragg grating Fabry-Perot sensor |
| CN102436026A (en) * | 2012-01-11 | 2012-05-02 | 西安盛佳光电有限公司 | Method for simultaneously manufacturing multiple optical fiber gratings |
| CN102998740A (en) * | 2012-11-30 | 2013-03-27 | 燕山大学 | Device and method for simultaneously inscribing multi-wavelength array gratings in ribbon fiber |
| CN103984056A (en) * | 2014-05-11 | 2014-08-13 | 中国科学技术大学 | Inscribing method for sampling fiber bragg grating |
| CN106443872A (en) * | 2016-10-20 | 2017-02-22 | 北京信息科技大学 | A Method for Writing Fiber Bragg Gratings with Arbitrary Gate Length Based on Adjustable Aperture |
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2017
- 2017-03-31 CN CN201710211461.7A patent/CN106908896A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1280303A (en) * | 1999-07-07 | 2001-01-17 | 三星电子株式会社 | Equipment and method for producing optic fibre grating |
| CN101178459A (en) * | 2007-12-06 | 2008-05-14 | 西安盛佳光电有限公司 | Manufacturing method of polarization maintaining optical fiber apodization double gratings |
| CN101900576A (en) * | 2010-07-08 | 2010-12-01 | 北京交通大学 | Method for manufacturing fiber bragg grating Fabry-Perot sensor |
| CN102436026A (en) * | 2012-01-11 | 2012-05-02 | 西安盛佳光电有限公司 | Method for simultaneously manufacturing multiple optical fiber gratings |
| CN102998740A (en) * | 2012-11-30 | 2013-03-27 | 燕山大学 | Device and method for simultaneously inscribing multi-wavelength array gratings in ribbon fiber |
| CN103984056A (en) * | 2014-05-11 | 2014-08-13 | 中国科学技术大学 | Inscribing method for sampling fiber bragg grating |
| CN106443872A (en) * | 2016-10-20 | 2017-02-22 | 北京信息科技大学 | A Method for Writing Fiber Bragg Gratings with Arbitrary Gate Length Based on Adjustable Aperture |
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