WO2003046631A1 - Fibre optique plastique et cable a fibres optiques - Google Patents
Fibre optique plastique et cable a fibres optiques Download PDFInfo
- Publication number
- WO2003046631A1 WO2003046631A1 PCT/JP2002/012517 JP0212517W WO03046631A1 WO 2003046631 A1 WO2003046631 A1 WO 2003046631A1 JP 0212517 W JP0212517 W JP 0212517W WO 03046631 A1 WO03046631 A1 WO 03046631A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- optical fiber
- light
- plastic optical
- core
- protective coating
- 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
Links
Classifications
-
- 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
-
- 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
- G02B6/02033—Core or cladding made from organic material, e.g. polymeric material
-
- 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
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4401—Optical cables
- G02B6/4429—Means specially adapted for strengthening or protecting the cables
- G02B6/443—Protective covering
-
- 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
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4401—Optical cables
- G02B6/4402—Optical cables with one single optical waveguide
-
- 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
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4479—Manufacturing methods of optical cables
- G02B6/4482—Code or colour marking
Definitions
- the present invention relates to a plastic optical fiber formed by using a resin for a core and a clad, and an optical fiber cable.
- the refractive index distribution of the core is composed of a graded index type, enabling transmission between two points separated by more than 100 m at a transmission rate of more than 100 Mbs. Everything has been realized.
- this plastic optical fiber is provided with a protective coating 103 (see FIG. 4) using a hydrocarbon resin on the outer periphery of the clad 102 for reinforcing the strength.
- a protective coating 103 see FIG. 4
- the protective coating 1 Due to the difference in refractive index between 03 and air, the light may be transmitted through the protective cover 103.
- LDs semiconductor lasers
- LEDs light-emitting diodes
- LDs semiconductor lasers
- LEDs light-emitting diodes
- a condensing lens at the same time, but if this condensing lens is not used to reduce costs
- light emitted from an LD or an LED is diffused before being incident on an optical fiber, and may be incident on a protective coating 103 other than the core 101. In this case, light propagating in the protective coating 103 may cause inconvenience such as deterioration of a received signal at a transmission destination.
- the protective coating 103 for example, a wavelength of 85 O nm or more is used. If infrared light is used, it will be absorbed by the hydrocarbon resin present in the protective coating 103, so when transmitting over a distance of 1 Om or more, No transmitted light is observed.
- the protective coating 103 When such a pulsed light enters the light receiving system, the protective coating 103 has a higher refractive index than the core 101, and therefore the protective coating 103 has a higher refractive index than the core 101.
- the speed of light propagating through the part is slow. Therefore, the light propagating in the protective coating 103 is delayed more than the light propagating in the core 101, and is observed as two separate pulses in the light receiving system. As a result, bit errors are exacerbated, and the quality of digital communications is degraded.
- an object of the present invention is to provide a light source and a light-collecting lens which are not used in combination, or even when visible light or infrared light for short-range communication is used.
- An object of the present invention is to provide a plastic optical fiber capable of performing high-quality optical communication without unnecessary propagation light propagating through a protective coating, and an optical fiber cable having the plastic optical fiber. Disclosure of the invention
- the present invention provides a plastic optical fiber in which a core and a clad are formed by using a resin containing an appropriate substance, and a hydrocarbon-based resin is used for a protective coating formed on an outer periphery of the clad.
- a plastic optical fiber in which an absorption layer containing a dye that absorbs light of a specific wavelength or a specific wavelength region is formed outside.
- the present invention provides the above plastic optical fiber, wherein the core and the clad are formed using a resin containing fluorine. Further, the absorption layer has at least the same wavelength as light propagating inside the core and absorbs light incident on the absorption layer from outside with the dye, thereby preventing the incident light from entering the core and the clad.
- the above-mentioned plastic optical fiber characterized in that it is configured to perform the above-mentioned, is provided.
- plastic optical fiber according to any one of the above, wherein the absorbing layer is formed by coating.
- the present invention provides the above plastic optical fiber, wherein a pigment using an inorganic substance, a pigment using an organic substance, or a pigment obtained by mixing both pigments is used as the pigment.
- an optical fiber cable comprising the plastic optical fiber according to any one of the above.
- FIG. 1 is a schematic sectional view showing a configuration of a fluororesin plastic optical fiber according to an embodiment of the present invention.
- FIG. 2 is a schematic cross-sectional view showing an example of an optical fiber cable using the fluororesin plastic optical fiber of the present invention.
- FIG. 3 is a schematic cross-sectional view showing another example of an optical fiber cable using the fluororesin plastic optical fiber of the present invention.
- FIG. 4 is a schematic sectional view showing the configuration of a conventional plastic optical fiber. BEST MODE FOR CARRYING OUT THE INVENTION
- FIG. 1 is a schematic sectional view showing a configuration of a fluororesin plastic optical fiber according to an embodiment of the present invention.
- the fluororesin plastic optical fiber of this embodiment includes, in order from the center, a core 1, a clad 2, a protective coating 3, and a colored layer 4.
- the colored layer 4 Contains blue dye 42 in it.
- a perfluoro compound having a higher refractive index than that of the base material is added as a dopant for increasing the refractive index to a diameter of 120 m.
- the core 1 of this embodiment uses, for example, a preform method (or an extrusion method), and has a refractive index of 1.355 at the center by a method such as thermal diffusion. It has a refractive index distribution close to that of the distribution and constitutes a GI (Dalled Index) type.
- the refractive index distribution of the core 1 may be, for example, an S I (step index) type.
- n 2 1.342
- layer thickness of It is formed to 1 15 m (outer diameter is 230 x m).
- the optical dispersion of the core and the clad material can be reduced.
- the optical dispersion in the visible light region to the near infrared region is smaller, and the optical dispersion in the visible light region is smaller than that of quartz optical fibers. .
- Such a decrease in light dispersion becomes more remarkable by doping the core 1 with a perfluoro compound.
- the protective coating 3 is made of a material whose fluorine content is positively removed so as to absorb (near) infrared light.
- a fluorine-free resin having a refractive index of, for example, 1.
- the polymethyl methacrylate (PMMA) of 492 is formed to a thickness of 246 m (outer diameter is 492 ⁇ m).
- the protective cover 3 is configured to have a higher refractive index than the core 1 ⁇ clad 2, but the reverse may be applied.
- the absorption layer 4 has at least the same wavelength as the light propagating inside the core 1 and absorbs light incident on the absorption layer 4 from the outside with a dye 42 described later, and the incident light from the side of the absorption layer 4 Is configured to prevent entry into core 1 and clad 2.
- a material having a higher refractive index than the protective coating 3 is used for the base material 41 of the absorbing layer 4, and is formed to have a thickness of about 7 m, for example.
- a UV curable epoxy acrylate having a refractive index of 1.548 is used for the base material 41 of this embodiment, and is formed by a pressure die.
- the absorption layer in consideration of the use of signal light having a wavelength of light to be transmitted, for example, red or a longer wavelength than that of the light to be transmitted, the absorption layer. Also, in order to absorb this light and prevent the light from entering the core 1 and the clad 2, a color capable of absorbing extraneous light having the same wavelength as the transmission wavelength in the core 1, for example, in this embodiment, a blue dye 42 is contained. ing.
- a white pigment e.g., T I_ ⁇ 2, Z n O, 2 P b C 0 3
- a blue pigment were mixed in this inorganic It was composed of certain appropriate organic substances (for example, phthalocyanine, dioxazine, anthraquinone, etc.).
- the dye 42 is mixed with the substrate 41 by 15% by weight, and the refractive index
- the absorbing layer 4 is formed by coating on the outer peripheral surface of the protective coating 3, and in this embodiment, UV curing is performed using a UV curing resin for the base material 41 in this embodiment from the viewpoint of adhesion strength.
- a thermosetting resin may be used for the base material 41 and thermoset. From the viewpoint of productivity, a UV-curable resin is more preferable as the substrate 41, but the refractive index of the substrate 41 is not particularly limited.
- the dye 42 is mixed in the absorption layer 4, even if light enters or transmits the fluororesin plastic optical fiber from the outside, at least the light is transmitted through the core 1.
- the extraneous light having the same wavelength as the signal light can be absorbed when it collides with the dye 42 while passing through the absorption layer 4. As a result, penetration into the core 1 inside the fluoroplastic optical fiber can be prevented.
- the present invention also provides an optical fiber cable including the above-mentioned fluororesin plastic optical fiber.
- an optical fiber cable including the above-mentioned fluororesin plastic optical fiber.
- the optical fiber cable shown in FIG. 2 has a tensile strength member 10 at the center, and a plurality of slots 11 are formed at equal intervals on the outer peripheral surface.
- the plastic optical fibers 20 are stored one by one.
- a presser winding tape 13 is wound around the outer peripheral surface, and the whole is further covered with a sheath 14.
- Reference numeral 15 in the figure denotes a tear string for easily peeling off the sheath 14 at the time of branching and taking out the fluororesin plastic optical fiber 20 from the cable.
- a 12-wire configuration in which a total of 12 fluoroplastic optical fibers 20 are accommodated is shown, the present invention is not limited to this, and the number of slots 11 and fluoroplastic optical fibers 20 is appropriately selected. it can.
- a plurality of (here, four) fluororesin plastic optical fibers 20 can be accommodated in one slot 11.
- a plurality of fluororesin plastic optical fibers 20 may be covered at once.
- a flat cable may be used as described in, for example, Japanese Patent Application Laid-Open No. H11-231181. Further, for example, as described in Japanese Patent Application Laid-Open No. H11-202171, a plurality of flattened products may be laminated.
- the refractive index of the resin used as the base material 41 of the colored layer 4 is not limited, and may be, for example, higher or lower than the refractive index of the protective coating 3 (in this embodiment, the colored layer 4 is higher), so each case will be explained separately.
- the refractive index of the colored layer 4 (substrate 41) is higher (or the same) than that of the protective coating 3.
- the protective coating 3 does not cause total reflection between the protective coating 3 and the base material due to the refractive index. Therefore, of the signal light propagating in the protective coating 3, the light traveling toward the interface with the absorption layer 4 is at any angle with respect to the absorption layer 4 (even if the critical angle is exceeded). ) Permeate and leak to the absorption layer 4. As a result, light propagating in the protective coating 3 can be removed.
- the light traveling from the absorption layer 4 to the interface with the outside can escape to the outside when traveling toward the interface at a critical angle or more.
- light traveling toward the interface at a critical angle or less can hardly escape from the absorbing layer 4 to the outside because the light is totally reflected.
- the dye 42 capable of absorbing light of that wavelength is mixed in the absorption layer 4, even if the light is totally reflected at the interface with the outside world and cannot escape to the outside, the light It can be absorbed by the dye 42 and removed. It is to be noted that extraneous light incident on the adsorption layer 4 from the outside can be similarly absorbed by the dye 42 and removed.
- the speed of light propagation is inversely proportional to the refractive index of the traveling medium.
- the evanescent light described above is lower than the velocity in the absorption layer 4 in the case of (1). It travels in the absorption layer 4 at a high speed.
- the probability of collision with the dye 42 per unit time is higher than in the case of (1).
- evanescent light seeping into the absorption layer 4 can be absorbed and removed quickly and efficiently in a short time.
- absorption and removal of evanescent light by this dye 42 The action is performed each time the light propagating in the protective coating 3 repeats total reflection at the interface with the absorbing layer 4, so that the light propagating in the protective coating 3 can be gradually attenuated.
- the extraneous light incident on the adsorption layer 4 from the outside can be absorbed and removed by the dye 42 as in the case of (1).
- the fluoroplastic optical fiber and the optical fiber cable of the present invention have been described in detail above.
- the fluoroplastic optical fiber and the optical fiber cable of the present invention like other plastic optical fibers, have a quartz optical fiber.
- the loss is greater than that of fiber, it has excellent flexibility and is hard to break even when the core 1 is enlarged, so it is said to be particularly suitable for short-distance communication such as LAN.
- the same core, clad 2 and protective coating 3 as the plastic optical fiber A of the comparative example were used. Further, on the outer periphery of the protective coating 3, a UV curable epoxy acrylate is used as a base material 41, and an absorbing layer 4 containing a blue dye is applied to the protective coating 3 by a publicly known UV irradiator. The linear velocity and the UV irradiation intensity were appropriately adjusted so as to be equal to or less than the softening heat of the optical fiber B, and the film was formed with a thickness of 7 m.
- the core diameter, cladding diameter, and protective coating diameter of these optical fins A and B are the same. 0 / im, 230 ⁇ , 492 m.
- a and B were incident.
- the incident end face of the plastic optical fiber B was fixed to an optical stage, and the optical stage was slightly moved so that pulses could be incident on various positions on the incident end face. Then, pulse waveforms from the emission end faces of these plastic optical fibers A and B were observed with a sampling light oscilloscope OOS-01 manufactured by Hamamatsu Photonics.
- the core 1, the clad 2, and the protective coating 3 are the same as the plastic optical fiber A of the comparative example of “Example 1”, and the outer periphery of the protective coating 3 is a UV-curable epoxy acrylate as a base material 41.
- the absorption speed of the absorbing layer 4 containing carbon black as an inorganic pigment is adjusted by a known UV irradiation device so that the linear velocity and UV irradiation intensity are adjusted appropriately so as to be less than the softening heat of the plastic optical fiber A.
- a plastic optical fiber C having a thickness of 7 / xm was manufactured.
- the core diameter, cladding diameter, and protective coating diameter of the plastic optical fiber C are the same as those of the plastic optical fibers A and B, and are 120 m, 230 rn, and 492 ⁇ , respectively. m. Similarly to the plastic optical fiber A, no pulse propagating through the protective coating was observed for the plastic optical fiber C.
- a tensile strength member 10 consisting of a bluening steel wire having a diameter of 11.5 mm and a diameter of 1.6 mm at the center is provided, and 12 slots 1 are provided at equal intervals on the outer periphery.
- Each of the plastic optical fibers B manufactured in Example 1 is accommodated in each slot 11 of the polyethylene slot rod 12 formed with 1 and has a thickness of 18 mm and a width of 3 Omm.
- a three-layer winding of a polyester holding tape 13 is coated with a flame-retardant polyethylene sheath 14 having a thickness of 1.0 mm.
- the tear cord 15 is made of 100-denier para-type wholly aromatic polyamide fiber.
- a plastic optical fiber is formed by using a resin containing an appropriate substance for the core and the clad, and using a hydrocarbon-based resin for the protective coating formed on the outer periphery of the clad.
- the outermost layer of the protective coating has an absorption layer containing a dye that absorbs light of a specific wavelength or wavelength range, it is used for short-distance, high-pit-rate optical transmission In this way, it is possible to prevent the generation of light that propagates through the protective coating, which is problematic, and to prevent the occurrence of transmission errors.
- an LD or LED of an expensive package with a lens which has been conventionally used to focus light emitted from a light source to a core of a plastic optical fiber, or a light source is conventionally required. Since no external lens is required, in other words, Even with inexpensive LDs and LEDs packaged without a lens, it is possible to prevent signal light from propagating through the protective coating, thereby reducing the cost of transmission equipment.
- the present invention by providing an absorption layer on the outermost layer of the plastic optical fiber, even if light having the same wavelength as the signal light propagating in the core of the plastic optical fiber is incident from the outside, this is prevented. Since it can be absorbed by the dye in the absorption layer, it does not enter the core and disturb the signal light, enabling high-quality optical communication.
- the present invention even if a plastic optical fiber is laid without covering with a cable or the like, it is possible to prevent deterioration of the protective covering due to ultraviolet rays included in sunlight or light of a fluorescent lamp.
- plastic optical fibers can be easily identified when a large number of plastic optical fibers are collectively used. Various operations can be performed efficiently on the fiber.
- the optical fiber cable of the present invention is provided with the fluoroplastic optical fiber having the above-described characteristics, the optical fiber cable is not used in combination with a focusing lens, or is used for visible light or short-range communication. Even when infrared light is used, unnecessary propagation light is eliminated, and high-quality optical communication can be performed.
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
Description
Claims
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2004-7004867A KR20040053149A (ko) | 2001-11-30 | 2002-11-29 | 플라스틱 광섬유 및 광섬유 케이블 |
| AU2002355057A AU2002355057A1 (en) | 2001-11-30 | 2002-11-29 | Plastic optical fiber and optical fiber cable |
| EP02788690A EP1450192A4 (en) | 2001-11-30 | 2002-11-29 | PLASTIC LIGHT FIBER AND LIGHT FIBER CABLE |
| US10/855,607 US20040218851A1 (en) | 2001-11-30 | 2004-05-28 | Plastic optical fiber and optical fiber cable |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001366371 | 2001-11-30 | ||
| JP2001-366371 | 2001-11-30 | ||
| JP2002-329656 | 2002-11-13 | ||
| JP2002329656A JP2003227976A (ja) | 2001-11-30 | 2002-11-13 | プラスチック光ファイバおよび光ファイバケーブル |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US10/855,607 Continuation US20040218851A1 (en) | 2001-11-30 | 2004-05-28 | Plastic optical fiber and optical fiber cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2003046631A1 true WO2003046631A1 (fr) | 2003-06-05 |
Family
ID=26624788
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2002/012517 Ceased WO2003046631A1 (fr) | 2001-11-30 | 2002-11-29 | Fibre optique plastique et cable a fibres optiques |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US20040218851A1 (ja) |
| EP (1) | EP1450192A4 (ja) |
| JP (1) | JP2003227976A (ja) |
| KR (1) | KR20040053149A (ja) |
| CN (1) | CN1592862A (ja) |
| AU (1) | AU2002355057A1 (ja) |
| TW (1) | TWI256494B (ja) |
| WO (1) | WO2003046631A1 (ja) |
Families Citing this family (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100538420C (zh) * | 2005-05-09 | 2009-09-09 | 三菱丽阳株式会社 | 塑料光纤电缆 |
| JP4728132B2 (ja) * | 2006-02-01 | 2011-07-20 | 日本電信電話株式会社 | 光コード |
| DE102006034841A1 (de) * | 2006-07-27 | 2008-01-31 | Siemens Ag | Faserband für einen faseroptischen Sensor |
| KR101035123B1 (ko) * | 2007-02-02 | 2011-05-19 | 황임규 | 플라스틱 광섬유를 내장한 실리콘 고무 고형체 및 그제조방법 |
| JP5176393B2 (ja) * | 2007-05-25 | 2013-04-03 | 富士ゼロックス株式会社 | 高分子フィルム光導波路の製造方法 |
| JP2009075362A (ja) * | 2007-09-20 | 2009-04-09 | Fuji Xerox Co Ltd | 光導波路及びその製造方法 |
| JP4657327B2 (ja) * | 2008-07-17 | 2011-03-23 | 三菱電線工業株式会社 | 光ファイバ心線へのコネクタの固定構造 |
| WO2010113639A1 (ja) * | 2009-03-31 | 2010-10-07 | 東レ株式会社 | プラスチック光ファイバおよびプラスチック光ファイバコード |
| US20140093690A1 (en) * | 2011-05-31 | 2014-04-03 | Nanoptics, Incorporated | Method and apparatus for lithographic manufacture of multi-component polymeric fiber plates |
| JP2017142285A (ja) * | 2016-02-08 | 2017-08-17 | 住友電気工業株式会社 | 光ファイバケーブル |
| JP6312760B2 (ja) * | 2016-08-30 | 2018-04-18 | 株式会社フジクラ | 光ファイバ |
| JP7024719B2 (ja) * | 2016-10-04 | 2022-02-24 | 住友電気工業株式会社 | スロットロッドおよび光ファイバケーブル |
| JP2018062448A (ja) * | 2016-10-13 | 2018-04-19 | 住友電気工業株式会社 | 光ファイバ心線の製造方法、および光ファイバ心線 |
| US10605984B2 (en) * | 2016-12-01 | 2020-03-31 | Waymo Llc | Array of waveguide diffusers for light detection using an aperture |
| JP2019049658A (ja) * | 2017-09-11 | 2019-03-28 | 小池 康博 | 光ファイバケーブル |
| CN110231677B (zh) * | 2019-06-06 | 2020-12-18 | 中国建筑材料科学研究总院有限公司 | 微透镜阵列及其制备方法 |
| TW202120632A (zh) | 2019-09-30 | 2021-06-01 | 日商日東電工股份有限公司 | 塑膠光纖 |
| WO2023189998A1 (ja) | 2022-03-31 | 2023-10-05 | 東レ株式会社 | プラスチック光ファイバおよび医療用センサ機器 |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5893003A (ja) * | 1981-11-27 | 1983-06-02 | Mitsubishi Rayon Co Ltd | 光伝送性繊維 |
| EP0128765A2 (en) * | 1983-06-09 | 1984-12-19 | Sumitomo Electric Industries Limited | Optical transmission channel |
| WO1990013579A1 (en) * | 1989-05-12 | 1990-11-15 | Desoto, Inc. | Photocurable pigmented secondary optical fiber coatings |
| JPH0739004U (ja) * | 1993-12-25 | 1995-07-14 | 住友電気工業株式会社 | 光ファイバケーブル |
| EP0710855A1 (en) * | 1994-04-18 | 1996-05-08 | Yasuhiro Koike | Refractive index distribution type optical resin and production method thereof |
| EP0879804A1 (en) * | 1997-05-21 | 1998-11-25 | Alcatel | Improved black appearing color coating for optical fiber |
| JPH11337781A (ja) * | 1998-05-29 | 1999-12-10 | Asahi Glass Co Ltd | 被覆プラスチック光ファイバおよびその製造方法 |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2512312C2 (de) * | 1974-03-20 | 1984-09-13 | Sumitomo Electric Industries, Ltd., Osaka | Verfahren zum Beschichten einer optischen Lichtleitglasfaser |
| JPS62109004A (ja) * | 1985-11-08 | 1987-05-20 | Hitachi Ltd | プラスチツク光フアイバ、その製法及び樹脂 |
| CA2056469C (en) * | 1990-11-30 | 1997-03-25 | Hiroaki Oonishi | Plastic optical fibers |
-
2002
- 2002-11-13 JP JP2002329656A patent/JP2003227976A/ja active Pending
- 2002-11-29 AU AU2002355057A patent/AU2002355057A1/en not_active Abandoned
- 2002-11-29 TW TW091134827A patent/TWI256494B/zh not_active IP Right Cessation
- 2002-11-29 WO PCT/JP2002/012517 patent/WO2003046631A1/ja not_active Ceased
- 2002-11-29 EP EP02788690A patent/EP1450192A4/en not_active Withdrawn
- 2002-11-29 KR KR10-2004-7004867A patent/KR20040053149A/ko not_active Withdrawn
- 2002-11-29 CN CNA028233379A patent/CN1592862A/zh active Pending
-
2004
- 2004-05-28 US US10/855,607 patent/US20040218851A1/en not_active Abandoned
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5893003A (ja) * | 1981-11-27 | 1983-06-02 | Mitsubishi Rayon Co Ltd | 光伝送性繊維 |
| EP0128765A2 (en) * | 1983-06-09 | 1984-12-19 | Sumitomo Electric Industries Limited | Optical transmission channel |
| WO1990013579A1 (en) * | 1989-05-12 | 1990-11-15 | Desoto, Inc. | Photocurable pigmented secondary optical fiber coatings |
| JPH0739004U (ja) * | 1993-12-25 | 1995-07-14 | 住友電気工業株式会社 | 光ファイバケーブル |
| EP0710855A1 (en) * | 1994-04-18 | 1996-05-08 | Yasuhiro Koike | Refractive index distribution type optical resin and production method thereof |
| EP0879804A1 (en) * | 1997-05-21 | 1998-11-25 | Alcatel | Improved black appearing color coating for optical fiber |
| JPH11337781A (ja) * | 1998-05-29 | 1999-12-10 | Asahi Glass Co Ltd | 被覆プラスチック光ファイバおよびその製造方法 |
Non-Patent Citations (1)
| Title |
|---|
| See also references of EP1450192A4 * |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1450192A1 (en) | 2004-08-25 |
| CN1592862A (zh) | 2005-03-09 |
| JP2003227976A (ja) | 2003-08-15 |
| TWI256494B (en) | 2006-06-11 |
| US20040218851A1 (en) | 2004-11-04 |
| AU2002355057A1 (en) | 2003-06-10 |
| TW200300506A (en) | 2003-06-01 |
| EP1450192A4 (en) | 2005-08-31 |
| KR20040053149A (ko) | 2004-06-23 |
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