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1. 发明专利

JP2001091755A HOLDING TERMINAL STORING RACK FOR OFFICE DISTRIBUTION SYSTEM FOR OPTICAL FIBER SUBSCRIBER COMMUNICATION 失效
公开(公告)号：JP2001091755A
公开(公告)日：2001-04-06
申请号：JP26383599
申请日：1999-09-17
申请人： FURUKAWA ELECTRIC CO LTD , NIPPON TELEGRAPH & TELEPHONE
发明人： TOKIYAMA YOSHIKI , OKUDA MAKOTO , NARAOKA SEIICHI , ENOMOTO YOSHITAKA , IZUMIDA CHIKASHI , MINE TSUNEJI
IPC分类号： G02B6/00 , H04Q1/14
摘要： PROBLEM TO BE SOLVED: To obtain a holding terminal storing rack capable of storing surplus length parts and tip end connectors of holding coated optical fibers for intermediate connection more than heretofore. SOLUTION: On the frame 23 of the rack, plural storing bags 24 are supported that store the extra length parts 10Aa', 10Ba' and the tip end connectors 11Aa, 11Ba of the unused holding coated optical fibers 10Aa, 10Ba for intermediate connection.

2. 发明专利

JP2000235122A OPTICAL PARTS HOUSING DEVICE AND METHOD FOR REMOVING WIRING OF OPTICAL PARTS HOUSED IN OPTICAL PARTS HOUSING DEVICE 失效
公开(公告)号：JP2000235122A
公开(公告)日：2000-08-29
申请号：JP3584199
申请日：1999-02-15
申请人： FURUKAWA ELECTRIC CO LTD , NIPPON TELEGRAPH & TELEPHONE
发明人： NARAOKA SEIICHI , NAKANO TAKEYUKI , OKUDA MAKOTO , TOKIYAMA YOSHIKI , ENOMOTO YOSHITAKA , IZUMIDA CHIKASHI , MINE TSUNEJI
IPC分类号： G02B6/00
摘要： PROBLEM TO BE SOLVED: To provide an optical parts housing device which facilitates the removal of wiring between optical parts and is high in the reliability of optical connection of the optical parts to each other. SOLUTION: Connection relay parts 39 having junctures 38 of the number corresponding to the number of respective optical fiber junctures 40 and 41 are disposed between the optical fiber junctures 40 of a splitter module 3 and the optical fiber junctures 41 of an optical fiber branching module 4. First optical fibers 6a drawn out of the respective optical fiber junctures 40 of the splitter module 3 are nonattachably and nondetachably connected to second optical fibers 6b in the respective junctures 38 of the connection relay parts 39. The second optical fibers 6b are connected to the optical fiber junctures 41 of the optical fiber branching module 4. The second optical fibers 6b are disconnected from the first optical fibers 6a at the junctures 38 and the second optical fibers 6b are hauled and taken off from the optical fiber branching module 4 side when the wiring between the splitter module 3 and the optical fiber branching module is removed.

3. 发明专利

JPH09197142A LIGHT BRANCHING UNIT 失效
公开(公告)号：JPH09197142A
公开(公告)日：1997-07-31
申请号：JP673296
申请日：1996-01-18
申请人： FURUKAWA ELECTRIC CO LTD , NIPPON TELEGRAPH & TELEPHONE
发明人： OTA IKUO , NARAOKA SEIICHI , KUROIWA MASATO , NAKAO NAOKI , EBIHARA TAKASHI
IPC分类号： G02B6/44 , G02B6/00
摘要： PROBLEM TO BE SOLVED: To provide an inexpensive light branching unit capable of being simply replaced without exerting influence upon optical communication. SOLUTION: This light branching unit 10 is used for an optical line access device for leading test light into an optical line and many units 10 are arrayed on a wiring frame at a prescribed pitch so as to be optionally attached/detached to connect a terminated out-of-station cable to an intra-station cable. Each unit 10 is provided with a coupler 11 for connecting at least one of an optical fiber 13 for the out-of-station cable and a test fiber 14 for leading test light into the unit 10 to one end of an intra-station side fiber 15 and an adaptor 12 fixed to the other end of the fiber 15 and connected to the intra-station cable so as to be optionally attached/detached.

4. 发明专利

JPH0843687A OPTICAL CONNECTOR DEVICE 失效
公开(公告)号：JPH0843687A
公开(公告)日：1996-02-16
申请号：JP20279594
申请日：1994-08-04
申请人： FURUKAWA ELECTRIC CO LTD , NIPPON TELEGRAPH & TELEPHONE
发明人： NARAOKA SEIICHI , TACHIKURA MASAO
IPC分类号： G02B6/38
摘要： PURPOSE:To provide a small-sized optical connector device which is integratable in a high density. CONSTITUTION:This optical connector device is composed of an adapter 3 having a fitting hole and an optical connector 4 which is inserted into the fitting hole of the adapter 3 and is freely attachably and detachably fitted therein. The inside wall of the fitting hole 38 of the adapter 3 is provided with a connector engaging part 22 engaging the optical connector 4. The optical connector 4 is provided with a plug frame 7 housing a ferrule 5. The plug frame 7 is provided with engaging pawls 10 for engaging with the connector engaging parts 22 of the adapter 3 projecting obliquely outward near the side peripheral edge thereof when the optical connector 4 is inserted into the adapter 3 and is provided with sliders 11 as pawl pressing means for releasing the engaging state with the adapter 3 of the optical connector 4 freely slidably with the plug frame 7 by pressing and retreating the detaining pawls 10 near the side peripheral edge of the plug frame 7.

5. 发明专利

JP2000235121A OPTICAL CONNECTOR TAKE-OFF JIG AND OPTICAL CONNECTOR TAKE-OFF METHOD USING THIS JIG 失效
公开(公告)号：JP2000235121A
公开(公告)日：2000-08-29
申请号：JP3584099
申请日：1999-02-15
申请人： FURUKAWA ELECTRIC CO LTD , NIPPON TELEGRAPH & TELEPHONE
发明人： TOKIYAMA YOSHIKI , NARAOKA SEIICHI , ENOMOTO YOSHITAKA , IZUMIDA CHIKASHI , MINE TSUNEJI
IPC分类号： G02B6/00
摘要： PROBLEM TO BE SOLVED: To provide an optical connector take-off jig which prevents the hooking of, for example, other optical fibers arranged in a plurality when taking off an optical connector, from the rear end of which the optical fiber is drawn out, from the rear end side of the optical connector by hauling the optical fiber. SOLUTION: The rear end 53 side of the optical connector take-off jig 51 is constituted as a tapered part 61 reduced in diameter nearer toward the rear end side. The part near the side part of the jig 51 is provided with an optical fiber insertion slit 56 into which the optical fiber for connection of the optical connector 57, from the rear end side of which the optical fiber for connection is drawn out, is inserted from the part near the side part of the jig 51. The optical fiber for connection is inserted from the optical fiber insertion slit 56 and nearly the entire part of the outside surface of an optical connector body 58 is covered by the jig 51 and is the optical fiber is freely attachably and detachably mounted and fitted to the main body of the optical connector 57.

6. 发明专利

JP2000231020A OPTICAL PARTS HOUSING FRAME DEVICE 失效
公开(公告)号：JP2000231020A
公开(公告)日：2000-08-22
申请号：JP3137499
申请日：1999-02-09
申请人： FURUKAWA ELECTRIC CO LTD , NIPPON TELEGRAPH & TELEPHONE
发明人： TOKIYAMA YOSHIKI , OKUDA MAKOTO , NARAOKA SEIICHI , ENOMOTO YOSHITAKA , IZUMIDA CHIKASHI , MINE TSUNEJI
IPC分类号： H04B10/25 , G02B6/00 , H04B10/00 , H04B10/12 , H04B10/13 , H04B10/135 , H04B10/14
摘要： PROBLEM TO BE SOLVED: To facilitate wiring and the change of wiring and to enhance the reliability of optical connection of optical parts to each other. SOLUTION: Splitter modules 3 which are connected at one end side to station cables 1 are housed into a device frame 15 and optical branch modules 4 which are connected at one end side to terminate cables 2 are superposed to multiple stages and are housed in the device frame 15. Plural optical fibers 6 for connection, which connect respective plural optical fiber junctures formed in the splitter modules 3 and the respective plural optical fiber junctures formed in the optical branch modules 4 respectively one to one, are connected to the optical fiber junctures described above via extra length housing parts 10. The extra length housing parts 10 are formed by housing plural fiber supporting plates 5. The plural optical fibers 6 for connection are divided to the number of the pieces corresponding to the number of the respective fiber supporting plates 5. Each of the number of pieces of the respective divided optical fibers 6 for connection are supported at the respective fiber supporting plates 5 and the optical fibers 6 for connection are connected to the respective optical fiber junctures.

7. 发明专利

JPH08286129A SWITCHING AND CONNECTING METHOD FOR OPTICAL FIBER AND OPTICAL SWITCH DEVICE USING THE METHOD 失效
公开(公告)号：JPH08286129A
公开(公告)日：1996-11-01
申请号：JP8577195
申请日：1995-04-11
申请人： FURUKAWA ELECTRIC CO LTD , NIPPON TELEGRAPH & TELEPHONE
发明人： ITO YOSHIHISA , NARAOKA SEIICHI , OOMIZU KIYONORI , KAWAZOE HIDEYO , TOMITA NOBUO
IPC分类号： G02B26/08
摘要： PURPOSE: To provide a switching and connecting method for optical fibers which can switch light paths fast with small-sized constitution, causes no damage to an optical fiber at the time of connection, and suppresses angle deviation between optical fibers, and the optical switch device using the method. CONSTITUTION: The switching and connecting method for the optical fibers which switches the light paths by sequentially switching a master fiber 4 to optical fibers arrayed at a specific pitch and the optical switch device 1 uses the method; and this device is equipped with the optical fibers which are arrayed at the specific pitch, the master fiber 4 which is arranged opposite the optical fibers, a positioning device 5 which has a positioning groove 5a for positioning the master fiber 4 for the respective optical fibers, and a driving means 10 which moves the master fiber 4 in the array direction of the optical fibers and positions the tip side in the positioning groove; and the master fiber 4 is switched and connected to a desired optical fiber by a driving means to switch the light path. The side of the master fiber 4 is provided with a pressing means 15 which presses and positions the tip end side of the master fiber 4 in the positioning groove and connects each optical fiber and the master fiber 4 together across a specific gap.

8. 发明专利

JP2000231023A OPTICAL COMPONENT STORAGE RACK DEVICE 失效
公开(公告)号：JP2000231023A
公开(公告)日：2000-08-22
申请号：JP3438399
申请日：1999-02-12
申请人： FURUKAWA ELECTRIC CO LTD , NIPPON TELEGRAPH & TELEPHONE
发明人： ARAKAWA SATORU , OKUDA MAKOTO , NARAOKA SEIICHI , ENOMOTO YOSHITAKA , IZUMIDA CHIKASHI , MINE TSUNEJI
IPC分类号： H04B10/25 , G02B6/00 , H04B10/00 , H04B10/12 , H04B10/13 , H04B10/135 , H04B10/14
摘要： PROBLEM TO BE SOLVED: To facilitate wiring and wiring change and to increase the reliability of an optical connection between optical components. SOLUTION: The device is provided with a splitter module which has one end side connected to an in-office cable and optical fibers 6 for connection which store optical branch modules 4 each having one end side connected to a terminated cable 2 in a device rack and connect optical fiber connection parts formed on the splitter module and optical fiber connection parts 41 formed on an optical branch module 4, one to one. A tray 28c for wiring which mounts and leads the optical fibers 6 for connection to the optical fiber connection part 41 of the optical branch module 4 is provided on the upper side of the optical fiber connection part 41 and the tray 28c is provided with an R guide 42 which divides the optical fibers 6 for connection into optical fiber groups and guides them to the optical fiber connection parts 41 by the optical fiber group and a cord guide 43 which divides the optical fiber groups by the number of the optical fiber connection parts 41 of the optical branch modules 4.

9. 发明专利

JPH11119059A METHOD FOR COLLATING CORE IN OPTICAL FIBER TAPE 失效
公开(公告)号：JPH11119059A
公开(公告)日：1999-04-30
申请号：JP27843997
申请日：1997-10-13
申请人： FURUKAWA ELECTRIC CO LTD , NIPPON TELEGRAPH & TELEPHONE
发明人： UCHIDA YASUSHI , NARAOKA SEIICHI , HATTORI MAKI , ENOMOTO YOSHITAKA , IBAYASHI TOSHIYA
IPC分类号： G02B6/40 , G02B6/00
摘要： PROBLEM TO BE SOLVED: To obtain an efficient core collating method for an optical fiber tape wired between three points. SOLUTION: The core collating method is prepared for checking the array of cores in an optical fiber tape 2 obtained by arraying two or more cores 1 in parallel, and when the optical fiber tape 2 having 2n (n=1, 2,...) cores 1 connected to a connection part 3 on a point A is divided into two optical fiber tapes 2 each of which has n cores 1 and the divided tapes 2 are respectively connected to the connection parts 3 of respectively different points B, C, 1st collating light is inputted from a point A side station to a 1st core 1 counted from the one end of each tape 2 in the core array direction, the 1st collating light propagated by the tapes 2 are detected on the points A, B, C. Then 2nd collating light is inputted from the point A side station to an (n+1)th core 1 counted from the one end of the tape in the core array direction and the 2nd collating light propagated by the tapes 2 are detected on the points A to C to collate the cores of the tapes 2 between the points A to C.

10. 发明专利

JPH09145539A SYSTEM FOR MAINTAINING LIGHT RAY PATH 失效
公开(公告)号：JPH09145539A
公开(公告)日：1997-06-06
申请号：JP32501095
申请日：1995-11-20
申请人： FURUKAWA ELECTRIC CO LTD , NIPPON TELEGRAPH & TELEPHONE
发明人： NARAOKA SEIICHI , KUROIWA MASATO , NAKAO NAOKI , EBIHARA TAKASHI
IPC分类号： G01M11/00 , G02B6/00 , H04B10/07 , H04B10/071 , H04B10/2507 , H04B10/08
摘要： PROBLEM TO BE SOLVED: To switch an improved device by the same instruction as used in a conventional device, by incorporating in a test control part a conventional-type first fiber-switching/selecting device an improved-type second and third fiber- switching/selecting devices. SOLUTION: A detecting optical fiber 10 is arranged at each of fiber- switching/selecting devices A1 , E1 , E2 . The detecting optical fiber 10 is connected by a connector to an optical fiber monitoring a ray path. The number of a ray path to be measured is commanded to each fiber-switching/selecting device A1 , E1 , E2 from a personal computer 5, so that a first and a second master optical fibers 12, 14 are switched/connected to the detecting optical fiber 10 of the designated number. A light signal of the ray path is taken into the test control part 1 through the corresponding master optical fiber. A fault point or the like is measured by an OTDR(optical time domain reflectometer) 4, etc. A common command is generated from the personal computer 5 to the fiber-switching/selecting device A1 , E1 , E2 thereby to switch an optical switch.

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