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21. 发明专利

JPS5850506A REINFORCING METHOD OF CONNECTING PART OF OPTICAL FIBER CORE 失效
公开(公告)号：JPS5850506A
公开(公告)日：1983-03-25
申请号：JP14926481
申请日：1981-09-21
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： HAIBARA TADASHI , MIYAUCHI MITSURU
IPC分类号： G02B6/24 , G02B6/38
摘要： PURPOSE:To prevent a strength drop of a reinforcing part due to air bubbles generated from a covered layer, by dehumidifying the covered layer of both ends after melt-stuck connection of an optical fiber strand, and forming the reinforcing part on the melt-stuck connecting part, and the covered layer of both end parts under heating conditions. CONSTITUTION:On the outside circumference of an optical fiber strand 1, a reinforcing layer is formed by use of silicon 2 and nylon 3. As for the strands 1, 1, the covering is removed, and they are melt-stuck by a connecting part 7. To one of the strands 1, a stainless steel wire 9 and a heat-contractible tube 10 are made to pass through together with an adhesive agent 11, before melt- sticking, and a covering 6 of both ends of the connecting part 7 is dehumidified for several minutes by use of a heater 13. Subsequently, the tube 10 is heated, the tube 10 contracts, and a reinforcing part is formed together with the adhesive agent 11. In this way, the tube 10, the stainless steel wire 9, the adhesive agent 11, the strand 1, and the coverings 2, 3 are firmly fixed, and also it is possible to prevent a strength drop of the reinforcing part due to air bubbles generated from the covered layer.

22. 发明专利

JPS5827120A OPTICAL COUPLING CIRCUIT 失效
公开(公告)号：JPS5827120A
公开(公告)日：1983-02-17
申请号：JP12464981
申请日：1981-08-11
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： MIYAUCHI MITSURU , HAIBARA TADASHI
IPC分类号： G02B6/28
摘要： PURPOSE:To couple light non-destructively from the outside of an optical fiber by embedding a part of the optical fiber in a near parabolic lens and making light incident to said lens from its one end face. CONSTITUTION:A part 2' of an optical fiber 2 is embedded in a near parabolic lens 1 consisting of an optical glass body of a circular columnar shape wherein the refractive index decreases gradually from the central axis toward the outside circumferential surface and light is made incident to the lens 1 from its one end face through an optical fiber 3. The incident light passes through an optical path 4 and intersects with the fiber 2' at the point 5 of intersection with said fiber. The path 4 changes with the refractive index distribution and length of the lens 1 as well as the incident position and angle of the fiber 3. Since the incident angle to the fiber 2' in the lens 1 can be easily changed, the above- mentioned circuit is advantageous in circuit constitution and parts composition.

23. 发明专利

JP2000338427A OPTICAL PATH SWITCHING COMPONENT FOR OPTICAL SERIAL BUS 失效
公开(公告)号：JP2000338427A
公开(公告)日：2000-12-08
申请号：JP14894099
申请日：1999-05-27
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： KURIHARA TAKASHI , MORI YUHEI , TOMARU AKIRA , HAYASHIDA SHOICHI , HAIBARA TADASHI , KANEKO AKEMASA , SUGAWA TOMONORI , IEDA KOJI
IPC分类号： G02B26/08 , H04B10/2581 , H04B10/27 , H04B10/278 , H04B10/29 , H04B10/02
摘要： PROBLEM TO BE SOLVED: To provide an optical path switching component which suitably actualizes a plug-and-play function in an optical serial bus network composed of the optical path switching component between an optical fiber and an optical serial bus board. SOLUTION: This is an optical path switching component used for an optical serial bus network composed of an optical fiber 2 as a transmission medium, an optical serial bus board 5 which receives and transmits data, and an optical path switching component which switches the optical path from the network to the optical serial bus board 5. Here, a terminal 4 equipped with an optical serial bus board 5 is connected to the optical path switching component to automatically switch the optical path switching component, thereby actualizing the plug-and-play function of the terminal 4.

24. 发明专利

JPH05307131A 失效
公开(公告)号：JPH05307131A
公开(公告)日：1993-11-19
申请号：JP11281292
申请日：1992-05-01
申请人： FURUKAWA ELECTRIC CO LTD , NIPPON TELEGRAPH & TELEPHONE
发明人： YAMADA HIROYUKI , SHIGEMATSU TAKASHI , KIMURA TAKAHIDE , HAIBARA TADASHI , MATSUMOTO MICHITO
IPC分类号： G02B6/38 , G02B6/40
摘要： PURPOSE:To provide the assembled type multiunit connector which can reduce the loss of light power at the time of connections as much as possible and is applicable to the connection of multiple optical fibers. CONSTITUTION:The assembled type multiunit connector is equipped with plural connector main bodies 10 and 11 which have two positioning V grooves 12 formed in their main surfaces and plural fiber V grooves 14 formed in the bottom surfaces of spacer storage parts, pins 16 for positioning which are arranged in the spaces formed of the positioning V grooves 12 when the connector main bodies 10 and 11 are made to abut on each other, optical fibers 18 mounted in the fiber V grooves 14, and a spacer 20 which is arranged in the space formed of the spacer storage parts and hold all the optical fibers 18 when the connector main bodies 10 and 11 are made to abut on each other; and the connector main bodies 10 and 11 have the positioning grooves 12 and fiber V grooves 14 formed by single machining.

25. 发明专利

JPH05288960A 失效
公开(公告)号：JPH05288960A
公开(公告)日：1993-11-05
申请号：JP11315992
申请日：1992-04-07
申请人： FURUKAWA ELECTRIC CO LTD , NIPPON TELEGRAPH & TELEPHONE
发明人： SAITO MASAMI , OTA TOSHIHIKO , YAMAKAWA ATSUSHI , YANASE HIROYUKI , MATSUMOTO MICHITO , HAIBARA TADASHI
IPC分类号： G02B6/36 , G02B6/40
摘要： PURPOSE:To easily take out only a desired unit connector without disordering the laminate state of laminate type optical connectors and to apply no unnecessary force to the other unit connectors. CONSTITUTION:A lower fitting member 16 which is supported on a base body 18 is engaged with the space of a ferrule laminate assembly 12 from below. A upper takeout member 20 fitted to an upper pressure cover 22 is engaged with the space of the ferrule laminate assembly 12 from above. The ferrule couple 13 to be taken out are moved to by the interval 28 of upper and lower takeout members 16 and 20 by an upper member 36 and a ferrule pressure plate 38. The other unit connectors 13' are restrained by the upper and lower fitting members 16 and 20 and only the unit connector 13 to be taken out is pushed out by a dummy ferrule and slid.

26. 发明专利

JPH05288940A 失效
公开(公告)号：JPH05288940A
公开(公告)日：1993-11-05
申请号：JP9431992
申请日：1992-04-14
申请人： SUMITOMO ELECTRIC INDUSTRIES , NIPPON TELEGRAPH & TELEPHONE
发明人： KAKII TOSHIAKI , TOMITA SHIGERU , HAIBARA TADASHI
IPC分类号： G01M11/00 , G02B6/00 , G02B6/44
摘要： PURPOSE:To reduce the size and loss of the optical discrimination structure of the optical transmission line. CONSTITUTION:In the optical discrimination structure of the optical transmission line which reflects pulse light made incident on the optical transmission line by a discrimination part to discriminate the optical transmission line, the optical transmission line of the discrimination part consists of a core area 11 and its peripheral clad area 12, which is partially removed in a specific shape in the core area direction to form a groove part 2. Thus, the groove part 2 is formed in the clad area 12 of the optical transmission line to obtain the reflection structure for the pulse light for discrimination and this is coded to enable the discrimination using the reflected light. Further, the groove 2 is formed shallowly not to reach the core area 11 and then the light loss is suppressed low.

27. 发明专利

JPH05249347A 失效
公开(公告)号：JPH05249347A
公开(公告)日：1993-09-28
申请号：JP4933992
申请日：1992-03-06
申请人： SUMITOMO ELECTRIC INDUSTRIES , NIPPON TELEGRAPH & TELEPHONE
发明人： ISHIDA HIDETOSHI , KAKII TOSHIAKI , MATSUMOTO MICHITO , HAIBARA TADASHI
IPC分类号： G02B6/36 , G02B6/38 , G02B6/40
摘要： PURPOSE:To enable the easy attachment and detachment of many pieces of optical connectors to be conducted by holding many pieces of the optical connectors within connector housings. CONSTITUTION:Plural pieces of the optical connectors 11 respectively mounted to the ends of optical cables 12 are supported in the connector housings 1, 2 while having optical clearance. Guide holes 9, 10 for insertion of guide pins are bored respectively in the connector housings 1, 2 and the optical connectors 11 so that the positioning at the time of joining these housings to other connector housings is executed by these guide pins. Further, clips 3 engage with the stoppers 7 of the connector housings 1, 2 at the time of joining the connector housings 1, 2, by which the joining state is maintained and fixed.

28. 发明专利

JPH05102583A OPTICAL FIBER AMPLIFIER 失效
公开(公告)号：JPH05102583A
公开(公告)日：1993-04-23
申请号：JP25779491
申请日：1991-10-04
申请人： SUMITOMO ELECTRIC INDUSTRIES , NIPPON TELEGRAPH & TELEPHONE
发明人： NISHIMURA MASAYUKI , SHIGEMATSU MASAYUKI , TOMITA SHIGERU , HAIBARA TADASHI
IPC分类号： G01M11/00 , G02B27/28 , G02F1/35 , H01S3/067 , H01S3/094 , H01S3/10
摘要： PURPOSE:To avoid the overlapping of ASE light with the backward scattering light by a method wherein a signal light amplifier is provided so that the second and third terminals of an optical circulator having four terminals are connected respectively to the signal light input and output ends of a signal light amplifier taking a loop shape while the first and fourth terminals are connected respectively to the incoming and outgoing ends of the signal light amplifier not through the intermediary of the signal light amplifier. CONSTITUTION:The title optical fiber amplifier is equipped with an optical circulator 1 with four terminals and a signal light amplifier 2 while the first terminal 11 and the fourth terminal 14 of the optical circulator 1 are connected respectively to the incoming end 8 and the outgoing end 9 of the signal light. On the other hand, the second and third terminals 12, 13 of the optical circulator 1 are connected respectively to the input side and the output side of the signal light amplifier 2 so as to take a loop shape. In order to make the OTDR measurement, the testing signal light can be amplified by the signal light amplifier 2 when it is passing through from the incoming end 8 to the outgoing end 9 of the optical fiber amplifier while the backward scattering light passes through from the output end 9 to the input end 8 of the optical fiber amplifier not through the intermediary of the signal light amplifier 2. Accordingly, the measurement precision shall not be deteriorated.

29. 发明专利

JPH0566326A OPTICAL CONNECTOR 失效
公开(公告)号：JPH0566326A
公开(公告)日：1993-03-19
申请号：JP25848391
申请日：1991-09-09
申请人： SUMITOMO ELECTRIC INDUSTRIES , NIPPON TELEGRAPH & TELEPHONE
发明人： KAKII TOSHIAKI , HONSHIYO MAKOTO , ISHIDA HIDETOSHI , KATSUSHIME HIROSHI , YAMANISHI TORU , MIYABE KAZUMICHI , HAIBARA TADASHI , MATSUMOTO MICHITO
IPC分类号： G02B6/36 , G02B6/38 , G02B6/40
摘要： PURPOSE:To enable low-loss coupling by providing a guide-pin elastic pressure member above where a guide-pin groove and a guide pin contact each other at the groove part of an upper plate. CONSTITUTION:An upper plate 4 formed of a material similar to a hard brittle material such as ceramics is joined with the upper part of a guide groove substrate 1 which is made of the hard brittle material and has an optical fiber guide groove 2 and the guide-pin groove 3 ground in the top surface and a groove part 5 covering the guide pin 10 positioned in the guide groove 3 of the guide groove substrate 1 is formed in the upper plate 4. Then the groove part 5 is provided with the guide-pin elastic pressure member 6 only above the center of the guide pin 10. A resin formation part 7 which is molded out of epoxy resin, etc., in one body is provided at the outer periphery of the joined guide substrate 1 and upper plate 4. Then the gap el between the guide-pin elastic pressure member 6 and guide pin 10 is set to, for example,

30. 发明专利

JPH0560948A MULTI-FIBER OPTICAL CONNECTOR 失效
公开(公告)号：JPH0560948A
公开(公告)日：1993-03-12
申请号：JP22431791
申请日：1991-09-04
申请人： SUMITOMO ELECTRIC INDUSTRIES , NIPPON TELEGRAPH & TELEPHONE
发明人： ISHIDA HIDETOSHI , SAITO KAZUTO , KAKII TOSHIAKI , HAIBARA TADASHI , MATSUMOTO MICHITO
IPC分类号： G02B6/38 , G02B6/40
摘要： PURPOSE:To accomplish the arrangement of optical fibers with high density by plurality laminating optical connector elements where plural fixing grooves for optical fibers are formed. CONSTITUTION:This optical connector 1 is constructed by laminating and mutually sticking the five optical connector elements 3 where plural fixing grooves for fibers 2 are arranged and formed in the center of its upper surface in a state where the end faces 4 on a connecting side are arranged. By thus sticking them, the fixing groove for fiber 2 of the optical connector element 3 which is a lower layer is blocked by the lower surface of the element 3 which is an upper layer. By pressing the optical fiber introduced to the fixing groove 2 by the lower surface of the element 3 which is the upper layer, the optical fiber is supported by two points in the fixing groove 2. Namely, the fixing groove 2 is V-shaped and the optical fiber whose cross section is round is tightly contact with the V-shaped groove 2, whereby the optical fiber is supported by two points.

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