WO2005103779A1 - 光ファイバ接続部構造及び光モニタ装置 - Google Patents
光ファイバ接続部構造及び光モニタ装置 Download PDFInfo
- Publication number
- WO2005103779A1 WO2005103779A1 PCT/JP2004/005793 JP2004005793W WO2005103779A1 WO 2005103779 A1 WO2005103779 A1 WO 2005103779A1 JP 2004005793 W JP2004005793 W JP 2004005793W WO 2005103779 A1 WO2005103779 A1 WO 2005103779A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- optical fiber
- light
- connection structure
- optical
- fiber connection
- Prior art date
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
- G02B6/24—Coupling light guides
- G02B6/255—Splicing of light guides, e.g. by fusion or bonding
- G02B6/2551—Splicing of light guides, e.g. by fusion or bonding using thermal methods, e.g. fusion welding by arc discharge, laser beam, plasma torch
-
- 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
- G02B6/255—Splicing of light guides, e.g. by fusion or bonding
- G02B6/2558—Reinforcement of splice joint
-
- 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
- G02B6/26—Optical coupling means
- G02B6/264—Optical coupling means with optical elements between opposed fibre ends which perform a function other than beam splitting
- G02B6/266—Optical coupling means with optical elements between opposed fibre ends which perform a function other than beam splitting the optical element being an attenuator
-
- 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
- G02B6/4286—Optical modules with optical power monitoring
Definitions
- the present invention relates to a structure of a connection portion of a fusion spliced optical fiber and an optical monitoring device that monitors the power of an optical signal propagating through the optical fiber, and particularly focuses on light emitted from the fusion spliced portion.
- the present invention relates to an optical fiber connection structure and an optical monitoring device.
- Optical fibers have been developed as a medium for transmitting optical signals.
- the material include a quartz glass fiber and a plastic fiber used in an optical communication system.
- it is used for all optical components that make up the system, including transmission lines. Specifically, it is used for a laser diode (LD) as a signal light source, a photodiode (PD) as a light receiver, an optical power splitter for splitting part of light, an optical switch for switching the optical path, and wavelength multiplexing / demultiplexing of optical signals.
- LD laser diode
- PD photodiode
- an optical switch for switching the optical path
- wavelength multiplexing / demultiplexing of optical signals Wavelength, a multiplexer / demultiplexer, an optical isolator that transmits light in one direction, an optical filter that filters light, an optical amplification fiber that serves as an optical amplification medium, and the like.
- an optical module such as an optical modulator or an optical amplifier, it is necessary to connect optical fiber
- connection methods for optical fibers include, for example, a physical connection method and a fusion spl ice method in which a glass base material is heated to a high temperature and melted for connection.
- the optical fiber is reinforced with ferrules such as zirconia, glass or metal, and connected using an adapter.
- a discharge is generated by an electrode, and the fibers are brought into contact with each other during the fusion to perform fusion splicing.
- a fusion splicing device using such a method has been put to practical use.
- quartz glass fibers are provided with a UV coat formed using an ultraviolet (UV) curable resin to prevent breakage due to damage to the glass surface.
- UV ultraviolet
- the above UV coat is removed once and fusion splicing is performed. After connection, the connection is protected again using a heat-shrinkable tube or the like.
- a recoating technique has been put to practical use, in which the UV coat once removed is again covered with the same thickness using a UV curable resin (for example, see Patent Documents 1 and 2 below). This recoating technique is an effective means for high-density mounting of optical fibers and connecting parts.
- the UV curable resin used in the above-mentioned recoating technology is not only a coating material for optical fibers, but also a lens forming material, an optical adhesive, an adhesive for bonding optical discs, and a hard coat for plastic films for LCDs. It is used in a wide range of fields such as resin for 3D modeling. As can be seen from the application, UV-curable resins have wavelengths longer than ultraviolet (200-400 nm), visible light (400-800 nm), and light of wavelengths used in optical communications (800-1650 nm). It has excellent permeability to
- Patent Document 1
- Patent Document 2
- connection loss occurs due to a mismatch between the eccentricity of the core and the mismatch of the mode field diameter.
- the connection loss of the same type of optical fiber is about 0.1 dB.
- a part of the optical signal L1 propagating through the core 101 is radiated from the core 101 to the clad 102 due to the connection loss described above.
- the light L 1 ′ emitted to the clad 102 propagates through the optical fiber in a clad mode.
- Fig. 8 shows an example of a measurement system that evaluates the ratio of cross-mode light coupling to another optical fiber (crosstalk) when the fusion spliced part of the optical fiber is close to another optical fiber.
- two light sources having wavelengths of, for example, 980 nm and 1480 nm are used as the light source 200.
- a recoating portion 104 transparent to the light output from the light source 200 is formed near the fusion splicing portion S.
- the optical power meter 201 measures the intensity P 1 [dBm] of the light that has propagated through the optical fiber F 1, and the cladding coupled to another optical fiber F 2 close to the fusion spliced portion S of the optical fiber F 1.
- the distance from the fusion splicing part S to the optical power meter 202 is L [cm].
- FIG. 11 is a diagram illustrating a configuration example of a general optical amplifier.
- the pumping light output from the pumping light source (LD) 301 is supplied to an erbium-doped fiber (EDF) 300 via a WDM force bracket 302.
- EDF erbium-doped fiber
- a part of the input light supplied from the input terminal IN to the EDF 300 via the optical isolator 303 and the WDM coupler 302 is branched by the branching power brabler 305 and monitored by the light receiver 306, and the light from the EDF 300 is A part of the output light sent to the output terminal OUT via the isolator 304 is branched by the branching power blur 307 and monitored by the light receiver 308.
- each component and connecting optical fiber is modularized in a mounting state as shown in the schematic diagram of FIG.
- the fusion spliced portion S of the optical fiber between the excitation light source 301 and the WD M force brass 302 and the optical fiber between the branching force brass 305 and the light receivers 310 In the case where the fusion splicing part S is close to the above, part of the excitation light leaks to the input monitor side via the fusion splicing part S, and the light of the input light monitored by the photodetector 306 The SN ratio may be degraded.
- the input optical power to the optical amplifier is 130 dBm and the loss of the branching power bracket 305 is 13 dB
- the power of the monitor light is -43 dBm.
- the power of the pump light is 20 dBm and the amount of cross between the optical fibers on the pump light side and the input monitor light side is 50 to 60 dB dB
- the light receiving device 3 The excitation light of 40 to 130 dBm leaks into 06. Therefore, when the leakage component of the excitation light having a higher power than the input monitor light is input to the photodetector 306, the monitoring accuracy of the input light to the optical amplifier deteriorates.
- the light emitted from the fusion spliced portion S of the optical fiber as described above can be used as a monitor light for monitoring the power of an optical signal propagating through the optical fiber from a different viewpoint. It is possible. However, heretofore, no proposal has been made regarding the specific configuration of the optical monitor that actively utilizes the light radiated from the fusion splicing portion S.
- the present invention has been made in view of the above points, and it is a first object of the present invention to realize an optical fiber connecting portion structure capable of reliably preventing light emitted from a fusion splicing portion from being coupled into another optical fiber. The purpose of. It is a second object of the present invention to provide a small-sized optical monitor device having a simple configuration using light emitted from a fusion splicing portion. Disclosure of the invention
- the optical fiber connecting portion structure of the present invention includes a fusion splicing portion in which each one end of two optical fibers having a core and a cladding and a coating portion provided outside the cladding is fusion-bonded.
- a recoat portion that re-covers the removed portion of the coating portion, and of the light propagating through the core, which is radiated to the clad side when passing through the fusion spliced portion.
- Radiation light coupling blocking means for preventing the radiation light from coupling into another optical fiber close to the outside of the recoil section.
- the recoil portion may be formed using a material that absorbs the radiation light.
- the outer peripheral surface of the recoat portion may be formed so as to have a shape capable of irregularly reflecting the radiated light.
- a material that absorbs the radiated light may be applied to an outer peripheral surface of the recoil portion that is transparent to the radiated light.
- An optical monitoring device is a device for monitoring the power of light propagating through an optical fiber having a core and a clad, wherein the fusion splicing existing on the optical fiber among the light propagating through the core.
- a light-receiving element for receiving radiation emitted to the cladding side when passing through the section, and detecting a power of light propagating through the optical fiber based on a photocurrent generated by the light-receiving element.
- the power of the light propagating through the optical fiber can be monitored only by providing the light receiving element by using the light radiated from the fusion splicing portion.
- FIG. 1 is a diagram showing a first embodiment of the optical fiber connection structure according to the present invention.
- FIG. 2 is a diagram showing a modification of the first embodiment.
- FIG. 3 is a view showing a second embodiment of the optical fiber connection structure according to the present invention.
- FIG. 4 is a diagram showing a third embodiment of the optical fiber connection structure according to the present invention.
- FIG. 5 is a diagram showing an embodiment of the optical monitoring device according to the present invention.
- FIG. 6 is a diagram showing an application example of the optical monitoring device of FIG.
- FIG. 7 is a diagram illustrating leakage of clad mode light into another optical fiber in a conventional optical fiber connection structure.
- FIG. 8 is a diagram showing an example of a measurement system for evaluating the crosstalk of clad mode light in a conventional optical fiber connection structure.
- FIG. 9 is a diagram showing a measurement result of a relationship between a distance and a crosstalk amount in the measurement system of FIG.
- FIG. 10 is a diagram for explaining a problem of a known technique for preventing occurrence of crosstalk in a conventional optical fiber connection structure.
- FIG. 11 is a diagram illustrating a configuration example of a general optical amplifier.
- FIG. 12 is a diagram schematically showing a mounted state of the optical amplifier of FIG. BEST MODE FOR CARRYING OUT THE INVENTION
- FIG. 1 is a diagram showing a first embodiment of the optical fiber connection structure according to the present invention.
- the optical fiber connecting portion structure of the present embodiment is a fusion splicing portion in which each one end of two optical fibers having a core 1, a cladding 2, and a UV coating portion (UV coating) 3 is fusion spliced.
- a material that has S and is capable of absorbing light emitted from the fusion spliced portion S is used as the recoat portion 10 formed in the portion where the UV coating portion 3 is removed for fusion splicing. It is characterized by the following.
- the material (recoat material) used for the recoat portion 10 is realized, for example, by mixing a coloring material with a UV curable resin.
- the coloring material mixed with the UV curable resin a material that absorbs less light in the ultraviolet (200 to 400 nm) wavelength region is preferable so that the curability of the UV light is not hindered. That's right.
- coloring materials can be roughly classified into pigments and dyes. Further, pigments are divided into inorganic pigments and organic pigments.
- inorganic pigment Rippon Black is known to exhibit very large absorption characteristics.
- the first recoil part 11 is formed using a UV curable resin in which the force pump rack is not mixed, and then the UV light is mixed with the force pump rack. It is effective to carry out double recoating in which the second recoat part 11 is formed using a cured resin.
- an inorganic pigment such as titanium oxide or zinc oxide may be mixed with the UV curable resin in addition to the above-described carbon black.
- organic pigments for example, cyanine dyes, phthalocyanine dyes, azo dyes and the like are known as near-infrared absorbing dyes, and UV curable resins mixed with such organic pigments are used.
- a recoat portion 10 may be formed.
- the optical signal L 1 propagating in the core 1 surrounded by the clad 2 is partially lost due to the eccentricity of the core in the fusion spliced portion S and the mismatch of the mode field diameter.
- the radiation L 1 ′ from the fusion splicing part S is absorbed by the recoat part 10 (FIG. 1) or the second recoat part 12 (FIG. 2). become. Therefore, even when other optical fibers are close to each other, it is possible to reliably avoid a situation in which the radiated light L 1 ′ from the fusion splicing part S leaks into the other optical fibers and causes crosstalk. become.
- FIG. 3 is a diagram showing an optical fiber connection structure of the second embodiment.
- the optical fiber connecting portion structure of the present embodiment has a fusion splicing portion S in which each one end of two optical fibers having a core 1, a cladding 2, and a UV coating portion 3 is fusion spliced, At the part where the UV coating part 3 was removed for fusion splicing, a recoated part 13 with irregularities on the surface was formed to diffusely reflect the light L 1 ′ emitted from the fusion spliced part S. It is characterized by. For example, when recoating the vicinity of the fusion spliced portion S using the same UV curable resin as in the past, the recoat portion 13 is several tens of times longer than the wavelength of the optical signal L1 propagating through the core 1.
- the light radiated from the fusion splicing portion S is the light signal L which is the surface roughness of the recoating portion 13 (in this case, the surface roughness is represented using the unevenness sizes H and T shown in FIG. 3). If the wavelength is one order of magnitude smaller than the wavelength of 1, almost no irregular reflection occurs on such an uneven surface.
- the surface roughness of the recoat portion 13 is substantially the same as the wavelength of the optical signal L1 and the shape of the irregularities is periodic, a diffraction phenomenon occurs on such irregularities, and light is identified. It becomes strongly reflected in the angle direction.
- the fusion splicing is performed by setting the irregularities H and T on the surface of the recoat portion 13 to about 100 to 100 m and making the irregularities substantially random.
- the light radiated from the portion S is irregularly reflected on the uneven surface.
- specific examples of the cladding diameter D2, the UV coating outer diameter D3, and the recoat length W are as follows.
- the cladding diameter D2 is 125 zm.
- the UV coating outer diameter D3 is about 250 lim, and the recoat length W is about 10 to 20 mm.
- the optical fiber to which the present invention can be applied is not limited to the above specific examples.
- the UV curable resin is cured by using a mold 20 as shown in the upper part of FIG. 3 in which random irregularities are formed by bead blast or the like. It is better to do the processing.
- a material that is transparent to light in the wavelength region of 200 to 400 nm is used to cure the UV curable resin filled between the optical fiber. Is preferred.
- the light L 1 ′ emitted from the fusion splicing portion S is irregularly reflected on the outer peripheral surface of the recoating portion 13, so that other optical fibers are close to each other. In this case, it is possible to substantially prevent the radiation L 1 ′ from the fusion splicing part S from leaking into another optical fiber.
- FIG. 4 is a diagram illustrating an optical fiber connecting portion structure according to the third embodiment.
- the optical fiber connection structure of the present embodiment is obtained by fusion splicing one end of each of two optical fibers having a core 1, a clad 2, and a UV coating (UV coating) 3.
- a recoating portion 14 After forming a recoating portion 14 using the same UV curable resin as the conventional one at the portion where the UV coating portion 3 was removed for the fusion splicing, the recoating portion 14 was formed.
- An absorber applying portion 15 for absorbing the light L 1 ′ emitted from the fusion splicing portion S is formed on the surface of the substrate.
- the absorbing material application section 15 is, for example, an ink or the like in which the same coloring material as in the first embodiment described above is mixed with a solvent different from the UV curable resin used for forming the recoating section 14. It is formed by applying the above-described ink to the entire surface of the recoating part 14 which is transparent to the radiation L 1 ′ from the fusion splicing part S.
- solvents include aliphatic hydrocarbons (petroleum ether, hexane, heptane, octane), aliphatic oxygen compounds (acetals, alcohols, acetone, acetate esters), and aliphatic nitrogen compounds (acetonitrile) , Aromatic compounds (benzene, toluene, xylene, styrene), aromatic nitrogen compounds (pyridine), aliphatic halogen compounds (chloroform, methyl chloride, dichloromethane, carbon tetrachloride), aromatic halogen compounds (Benzene benzene, benzyl chloride) and the like can be used.
- aliphatic hydrocarbons petroleum ether, hexane, heptane, octane
- aliphatic oxygen compounds acetals, alcohols, acetone, acetate esters
- aliphatic nitrogen compounds acetonitrile
- Aromatic compounds benzene
- the light L 1 ′ radiated from the fusion splicing portion S is transmitted through the recoating portion 14 and then absorbed by the absorber applying portion 15. Therefore, even when other optical fibers are close to each other, it is possible to reliably avoid a situation in which the radiated light L 1 ′ from the fusion splicing part S leaks into the other optical fibers and causes crosstalk. Will be possible.
- the absorber application part 15 can be formed with a thickness of the order of 0.1 mm. In addition, there is also obtained an effect that the method is very advantageous.
- FIG. 5 is a diagram showing a configuration of an embodiment of the optical monitoring device according to the present invention.
- the optical monitoring device of the present embodiment includes a light L 1 radiated from a fusion splicing portion S in order to monitor the power of an optical signal L 1 propagating through an optical fiber having a core 1 and a cladding 2.
- the light receiving element (PD) 30 is provided on the surface of the recoating section 4 where the 'reaches.
- the light receiving element 30 emits the light L 1 ′ radiated from the fusion splicing part S and transmitted through the recoat part 4 formed using the same transparent UV curable resin as before.
- This is a general light receiving element that receives light and generates a photocurrent according to the power of the light L 1 ′.
- the light receiving element 30 is fixed to the optical fiber such that the light receiving surface of the light receiving element 30 is located on the outer peripheral surface of the recoding section 4.
- the light L 1, radiated from the fusion splicing part S, is received by the light receiving element 30, and the light L 1, according to the value of the photocurrent output from the light receiving element 30.
- the power of the optical signal L1 propagating through the optical fiber can be easily monitored.
- a part of the optical signal L1 is branched using, for example, a fiber fusion fogger or a dielectric multilayer film, and the branched light is separated.
- the optical monitoring device of the present embodiment As described above, by utilizing the light L 1 ′ emitted from the fusion splicing portion S, The power of the optical signal L1 can be monitored only by providing the light receiving element 30 on the outer peripheral surface of the recoding section 4. This makes it possible to realize a small-sized optical monitor device with a small number of components.
- one light receiving element 30 is provided on the outer peripheral surface of the recoating section 4.
- it may be provided in the circumferential direction of the outer peripheral surface of the connecting portion 4.
- the light receiving surface of the light receiving element 30 is disposed on the outer peripheral surface of the recoating unit 4 .
- the light receiving surface is located near the outer peripheral surface of the recoating unit 4.
- the light receiving element 30 may be arranged so as to perform the above operation.
- an application is also possible in which a lens is formed on the outer peripheral surface of the recording unit 4 so that light emitted from the outer peripheral surface of the recoating unit 4 is focused on the light receiving surface of the light receiving element 30.
- the present invention as described above, it is possible to realize an optical fiber connecting portion structure that can reliably prevent the light emitted from the fusion splicing portion from coupling into another optical fiber, In addition, it is possible to provide a small-sized optical monitor device with a simple configuration using light emitted from the fusion splicing part. Therefore, the present invention has great industrial applicability in various fields such as optical communication.
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mechanical Coupling Of Light Guides (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2004/005793 WO2005103779A1 (ja) | 2004-04-22 | 2004-04-22 | 光ファイバ接続部構造及び光モニタ装置 |
JP2006512458A JP4657205B2 (ja) | 2004-04-22 | 2004-04-22 | 光ファイバ接続部構造 |
US11/583,107 US7296940B2 (en) | 2004-04-22 | 2006-10-19 | Optical fiber connecting portion structure and light monitor apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2004/005793 WO2005103779A1 (ja) | 2004-04-22 | 2004-04-22 | 光ファイバ接続部構造及び光モニタ装置 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/583,107 Continuation US7296940B2 (en) | 2004-04-22 | 2006-10-19 | Optical fiber connecting portion structure and light monitor apparatus |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005103779A1 true WO2005103779A1 (ja) | 2005-11-03 |
Family
ID=35197119
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2004/005793 WO2005103779A1 (ja) | 2004-04-22 | 2004-04-22 | 光ファイバ接続部構造及び光モニタ装置 |
Country Status (3)
Country | Link |
---|---|
US (1) | US7296940B2 (ja) |
JP (1) | JP4657205B2 (ja) |
WO (1) | WO2005103779A1 (ja) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006292674A (ja) * | 2005-04-14 | 2006-10-26 | Fujikura Ltd | 光パワーモニタ方法、光パワーモニタ装置及び光デバイス |
US7371019B2 (en) | 2004-12-13 | 2008-05-13 | Nufern | Method and apparatus for sensing light |
WO2010010888A1 (ja) * | 2008-07-25 | 2010-01-28 | パナソニック電工株式会社 | 活線検出装置 |
US7985028B2 (en) | 2008-06-30 | 2011-07-26 | Fujitsu Limited | Optical fiber splicing technique and optical member unit |
JP2016061944A (ja) * | 2014-09-18 | 2016-04-25 | 住友電気工業株式会社 | ファンアウト部品 |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2005103779A1 (ja) * | 2004-04-22 | 2005-11-03 | Fujitsu Limited | 光ファイバ接続部構造及び光モニタ装置 |
JP5164271B2 (ja) * | 2008-06-24 | 2013-03-21 | 株式会社フジクラ | 光コネクタの接続確認方法および接続確認装置 |
US9267330B2 (en) * | 2008-08-20 | 2016-02-23 | Foro Energy, Inc. | Long distance high power optical laser fiber break detection and continuity monitoring systems and methods |
DE102008062847A1 (de) * | 2008-12-23 | 2010-06-24 | Jt Optical Engine Gmbh + Co. Kg | Spleißverbindung zwischen zwei optischen Fasern sowie Verfahren zum Herstellen einer solchen Spleißverbindung |
JP6363680B2 (ja) * | 2016-11-16 | 2018-07-25 | ファナック株式会社 | レーザ装置 |
US11086075B2 (en) * | 2019-10-30 | 2021-08-10 | Alliance Fiber Optic Products, Inc. | Fiber array units with mode-field diameter conversion, and fabrication method |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5411753A (en) * | 1977-06-28 | 1979-01-29 | Nippon Telegr & Teleph Corp <Ntt> | Reinforcing method of optical fiber connecting parts |
JPS59184313A (ja) * | 1983-04-05 | 1984-10-19 | Fujikura Ltd | 金属コート光ファイバの終端部の形成方法 |
JPH0493904A (ja) * | 1990-08-06 | 1992-03-26 | Hitachi Cable Ltd | 金属管被覆光ファイバの接続部及びその接続方法 |
JPH10224304A (ja) * | 1997-02-03 | 1998-08-21 | Sumitomo Electric Ind Ltd | 光信号授受装置、光通信装置、光通信方法および光ファイバ判別方法 |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5022735A (en) * | 1989-11-07 | 1991-06-11 | The Charles Stark Draper Laboratory, Inc. | Fiber splice coating system |
JP3500041B2 (ja) | 1996-07-02 | 2004-02-23 | 古河電気工業株式会社 | 光ファイバとその製造方法 |
US6481903B1 (en) * | 1998-08-07 | 2002-11-19 | Tycom (U.S.) Inc. | Optical fiber splice protector and method for applying same |
US6535671B1 (en) * | 2000-02-29 | 2003-03-18 | Eigenlight Corporation | Optical fiber tap with integral reflecting surface and method of making same |
JP2001343548A (ja) | 2000-05-31 | 2001-12-14 | Totoku Electric Co Ltd | 異種光ファイバ接続用部品 |
US6602601B2 (en) * | 2000-12-22 | 2003-08-05 | Corning Incorporated | Optical fiber coating compositions |
US7029187B2 (en) * | 2002-05-31 | 2006-04-18 | Corning Incorporated | Optical fiber splice manufacturing process |
US7207732B2 (en) * | 2003-06-04 | 2007-04-24 | Corning Incorporated | Coated optical fiber and curable compositions suitable for coating optical fiber |
WO2005103779A1 (ja) * | 2004-04-22 | 2005-11-03 | Fujitsu Limited | 光ファイバ接続部構造及び光モニタ装置 |
-
2004
- 2004-04-22 WO PCT/JP2004/005793 patent/WO2005103779A1/ja active Application Filing
- 2004-04-22 JP JP2006512458A patent/JP4657205B2/ja not_active Expired - Fee Related
-
2006
- 2006-10-19 US US11/583,107 patent/US7296940B2/en not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5411753A (en) * | 1977-06-28 | 1979-01-29 | Nippon Telegr & Teleph Corp <Ntt> | Reinforcing method of optical fiber connecting parts |
JPS59184313A (ja) * | 1983-04-05 | 1984-10-19 | Fujikura Ltd | 金属コート光ファイバの終端部の形成方法 |
JPH0493904A (ja) * | 1990-08-06 | 1992-03-26 | Hitachi Cable Ltd | 金属管被覆光ファイバの接続部及びその接続方法 |
JPH10224304A (ja) * | 1997-02-03 | 1998-08-21 | Sumitomo Electric Ind Ltd | 光信号授受装置、光通信装置、光通信方法および光ファイバ判別方法 |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7371019B2 (en) | 2004-12-13 | 2008-05-13 | Nufern | Method and apparatus for sensing light |
JP2006292674A (ja) * | 2005-04-14 | 2006-10-26 | Fujikura Ltd | 光パワーモニタ方法、光パワーモニタ装置及び光デバイス |
US7985028B2 (en) | 2008-06-30 | 2011-07-26 | Fujitsu Limited | Optical fiber splicing technique and optical member unit |
WO2010010888A1 (ja) * | 2008-07-25 | 2010-01-28 | パナソニック電工株式会社 | 活線検出装置 |
CN102105828A (zh) * | 2008-07-25 | 2011-06-22 | 松下电工株式会社 | 活线检测装置 |
JP2016061944A (ja) * | 2014-09-18 | 2016-04-25 | 住友電気工業株式会社 | ファンアウト部品 |
Also Published As
Publication number | Publication date |
---|---|
JPWO2005103779A1 (ja) | 2008-03-13 |
JP4657205B2 (ja) | 2011-03-23 |
US7296940B2 (en) | 2007-11-20 |
US20070036499A1 (en) | 2007-02-15 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US7296940B2 (en) | Optical fiber connecting portion structure and light monitor apparatus | |
US7184623B2 (en) | Apparatus, system and method for an adiabatic coupler for multi-mode fiber-optic transmission systems | |
US5412746A (en) | Optical coupler and amplifier | |
US6185358B1 (en) | Optical attenuator and method of manufacturing same | |
AU2014293293B2 (en) | Fiber optic cable and connector assembly including integrated enhanced functionality | |
US8160414B1 (en) | Self forming waveguides for optical coupling and methodologies for making same | |
CN105264415A (zh) | 用于光纤连接器的自写入波导及相关方法 | |
JP2017054110A (ja) | 光モジュール | |
EP1483612B1 (en) | Optical energy switching device and method | |
US7352937B2 (en) | Devices, systems and methods for connecting a single mode fiber to a legacy multi-mode fiber | |
PL229961B1 (pl) | Urządzenie do selektywnego zwiększania strat modów wyższych rzędów | |
WO2018140780A1 (en) | Systems and methods for reduced end-face reflection back-coupling in fiber-optics | |
US8261442B2 (en) | Method for splicing a bend-optimized optical fiber | |
JP5168316B2 (ja) | 光ファイバ接続部構造 | |
Warier | The ABCs of fiber optic communication | |
JP2007206149A (ja) | 光ファイバの接続方法及び光硬化性樹脂 | |
Kihara | Optical performance analysis of single-mode fiber connections | |
Zhang | Coupling fibers to planar waveguides using a high-temperature epoxy | |
CN220399674U (zh) | 具有高功率滤波、分光、光隔离作用的组合器件 | |
Waki et al. | Investigation of self-written waveguide technique toward easy splicing method for SMF in optical networks | |
Wood et al. | 3-Port Fibre Optic Beam Splitters for Space Division Multiplexed Systems | |
Abd-Alla et al. | Improvement of the performance of advanced local area optical communication networks by reduction the effects of the propagation problems,“ | |
CA2414795A1 (en) | Fiber optic coupler | |
Neumann et al. | Components for Single-Mode Fibers | |
Zohrabyan et al. | In-fiber variable optical attenuation with ultra-low electrical power consumption |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BW BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE EG ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NA NI NO NZ OM PG PH PL PT RO RU SC SD SE SG SK SL SY TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): BW GH GM KE LS MW MZ SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LU MC NL PL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWE | Wipo information: entry into national phase |
Ref document number: 2006512458 Country of ref document: JP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 11583107 Country of ref document: US |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
WWW | Wipo information: withdrawn in national office |
Country of ref document: DE |
|
WWP | Wipo information: published in national office |
Ref document number: 11583107 Country of ref document: US |
|
122 | Ep: pct application non-entry in european phase |