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1. 发明专利

JPH1164682A OPTICAL CONNECTOR CLIP 失效
公开(公告)号：JPH1164682A
公开(公告)日：1999-03-05
申请号：JP21761497
申请日：1997-08-12
申请人： FURUKAWA ELECTRIC CO LTD , NIPPON TELEGRAPH & TELEPHONE , SEIWA GIKEN KK
发明人： SHINOZAKI ATSUSHI , SHIGEMATSU TAKASHI , OTA TOSHIHIKO , YOSHIOKA KENJI , TOMITA KENICHI , NAKAO NAOKI , IWADATE KAZUO
IPC分类号： G02B6/38
摘要： PROBLEM TO BE SOLVED: To provide an optical connector clip which does not require specific attaching and detaching tools, is small in the number of component parts and facilitates the fixing and releasing operation to and from the butt state of one set of the butt-connected optical connectors. SOLUTION: This connector clip 1 freely fixable and releasably holds one set of the optical connectors butt-connected by pin fitting to a butt state. The connector clip has a cover housing 1a which is mounted at an adapter housing 10 mounting one set of the optical connectors freely turnably around a pivot 1d, a pressing part 1b which is disposed at one end of this cover housing and presses the rear part of the one optical connector toward the direction where this optical connector is butted against the other optical connector and an operating piece 1c which is disposed adjacently to this pressing part and fixes and relieases the holding of one set of the optical connectors by turning operating the cover housing.

2. 发明专利

JP2000111742A OPTICAL CONNECTOR CONNECTION PART STRUCTURE 失效
公开(公告)号：JP2000111742A
公开(公告)日：2000-04-21
申请号：JP30044898
申请日：1998-10-07
申请人： FURUKAWA ELECTRIC CO LTD , NIPPON TELEGRAPH & TELEPHONE , SEIWA GIKEN KK
发明人： SHIINO MASAHITO , OTA TOSHIHIKO , IBUSUKI YASUHIRO , TOMITA KENICHI , YOSHIOKA KENJI , NAKAO NAOKI , IWADATE KAZUO
IPC分类号： G02B6/00
摘要： PROBLEM TO BE SOLVED: To prevent that an adverse effect is exerted on connection of an optical connector around the optical connector switching the connection when the connection of the optical connectors densely provided in a wiring box, etc., are switched. SOLUTION: An optical connector case insertion part 13 is provided on a side wall side of an optical fiber housing case 14 housing an optical fiber 4 to be connected of the optical connector 2 to be connected to the optical connector 1. The optical connector 1 and the optical connector 2 to be connected are housed in an optical connector housing case 8, and the optical fiber 3 pulled out of the optical connector 1 is fixed to an optical fiber fixing part 5. The optical connector housing case 8 is slide-held by a spring 10 to be inserted/fitted slidably into the optical connector case insertion part 13, and the fixing force of the optical fiber 3 by the optical fiber fixing part 5 is made larger than the holding force of this spring 10, and when the force is applied to the optical fiber 3, the optical connector housing case 8 is constituted so as to be pulled out of the optical connector case insertion part 13.

3. 发明专利

JPH1123895A OPTICAL WAVEGUIDE DEVICE 失效
公开(公告)号：JPH1123895A
公开(公告)日：1999-01-29
申请号：JP17734397
申请日：1997-07-02
申请人： FURUKAWA ELECTRIC CO LTD , NIPPON TELEGRAPH & TELEPHONE , SEIWA GIKEN KK
发明人： SATO ETSUZO , OTA TOSHIHIKO , SAITOU TSUNEAKI , YOSHIOKA KENJI , TOMITA KENICHI , NAKAO NAOKI , IWADATE KAZUO
IPC分类号： G02B6/30
摘要： PROBLEM TO BE SOLVED: To provide the optical waveguide device which can optically connect an optical circuit of a PLC(plane light guide circuit) chip with optical fiber in a high-precision aligned state. SOLUTION: This device has a light guide member 2 and a positioning part which positions 1st substrates 3 and 3 and an optical fiber 4 arranged at both the ends of the light guide member 2, and also equipped with positioning substrates 5 and 5 which are arranged opposite the 1st substrates 3 and 3 and 2nd substrates 6 and 6 which are arranged adjacently to the positioning substrates 5 and 5 and also arranged opposite the light guide member 2. At least either of the 1st and 2nd substrates 3 and 6 or the light guide member 2 and positioning substrates 5 and 5 are made transparent.

4. 发明专利

JPH1123855A WIRING METHOD FOR OPTICAL FIBER 失效
公开(公告)号：JPH1123855A
公开(公告)日：1999-01-29
申请号：JP17734297
申请日：1997-07-02
申请人： FURUKAWA ELECTRIC CO LTD , NIPPON TELEGRAPH & TELEPHONE , SEIWA GIKEN KK
发明人： NANRI NOBUHIRO , WATANABE KAZUKI , OTA TOSHIHIKO , IBUSUKI YASUHIRO , YOSHIOKA KENJI , TOMITA KENICHI , NAKAO NAOKI , IWADATE KAZUO
IPC分类号： G02B6/00
摘要： PROBLEM TO BE SOLVED: To provide the wiring method for an optical fiber which saves the space when many optical fibers extending out of an optical module are wired round. SOLUTION: Many optical modules are arrayed on racks 11 in stages so that they can freely be inserted and extracted, and the optical module has the 1st connection side CS1 of an optical fiber formed on one side in the insertion/extraction direction and the 2nd connection side CS2 on the other; and the optical fiber is extended out of at least the 1st connection side CS1. A single-core fiber 4 and a multicore fiber 3 are connected individually to the 1st connection side CS1 of each optical module and many single-core fibers 4 and multicore fibers 3 extended out of the 1st connection sides CS1 of many optical modules 1 are stored in mutually different storage means 12 and 13.

5. 发明专利

JPH09243938A OPTICAL FIBER JUNCTURE 失效
公开(公告)号：JPH09243938A
公开(公告)日：1997-09-19
申请号：JP4595496
申请日：1996-03-04
申请人： FURUKAWA ELECTRIC CO LTD , NIPPON TELEGRAPH & TELEPHONE
发明人： YORINARI HIROSHI , IWADATE KAZUO , TOMITA NOBUO
IPC分类号： G02B6/24 , G02B26/08
摘要： PROBLEM TO BE SOLVED: To make it possible to avert the influence of the Fresnel reflection at connecting end faces even if a refractive index matching gent is not used, to facilitate optical axis alignment and to suppress the light loss in a juncture by inclining the end faces of the ends of optical fibers to a prescribed angle and varying the respective outside diameters thereof. SOLUTION: The respective connecting end faces 1B, 2B of the optical fibers 1, 2 are inclined in the same direction at a prescribed angle θ. The light emitted from the connecting end face 1B of the optical fiber 1 refracts according to the angle θ of inclination of the connecting end face 1B and is made incident on the connecting end face 2B of the optical fiber 1. Namely, the state that the optical fibers are connected by having a misalignment component (s) of the optical axis 2A of the optical fiber 2 from the optical axis 1A of the optical fiber 1 is made into the state of the min. connection loss by the optical alignment of the optical fibers 1A, 2A. The outside diameters of the optical fibers 1A, 2A may be determined from the misalignment component of the optical axis. The outside diameters may be determined when the ends of the optical fibers incline at a prescribed angle.

6. 发明专利

JPH0875955A PHOTODETECTOR 失效
公开(公告)号：JPH0875955A
公开(公告)日：1996-03-22
申请号：JP21376794
申请日：1994-09-07
申请人： FURUKAWA ELECTRIC CO LTD , NIPPON TELEGRAPH & TELEPHONE
发明人： IWADATE KAZUO , INOUE YASUSHI , WATANABE ICHIRO
IPC分类号： G02B6/42
摘要： PURPOSE: To provide a photodetector which can detect light emitted from each coated optical fiber of a multicore optical fiber tape with good sensitivity at the same light receiving level. CONSTITUTION: This photodetector consists of a light-receiving element 13 which receives light emitted from a multicore optical fiber tape 10, and a movable slit 12 which is disposed between the multicore optical fiber tape 10 and the light-receiving element 13 and moves within the width of the multicore optical fiber tape. The movable slit 12 is fixed to the center of the light- receiving element 13 and the movable slit 12 and the light-receiving element 13 move together. Thereby, the light emitted from each coated optical fiber of the multicore optical fiber tape can be detected with the same sensitivity.

7. 发明专利

JPH0894944A FILTER MOVING TYPE OPTICAL SWITCH 失效
公开(公告)号：JPH0894944A
公开(公告)日：1996-04-12
申请号：JP25726494
申请日：1994-09-28
申请人： FURUKAWA ELECTRIC CO LTD , NIPPON TELEGRAPH & TELEPHONE
发明人： INOUE YASUSHI , IWADATE KAZUO , HATTORI NOBUHIKO , ITO YOSHIHISA , TOMITA NOBUO
IPC分类号： G02B26/08
摘要： PURPOSE: To assure the flatness of an optical filter and to stably maintain gripping force over a long period of time by forming a filter supporting body which holds and supports the optical filter with a rigid plane and an elastic plane. CONSTITUTION: The filter supporting body 17 for supporting the thin sheet-like optical filter 15 to be put into and out of a slit 13 holds the upper half part of the optical filter 15 with the one plane of the half supporting body 19 consisting of a rigid flat plate made of metals, ceramics or rigid resins and the plane on the rubber plate 21 side of a composite plate 25 formed by sticking a rubber plate 21 having elasticity and a reinforcing plate 23 having rigidity and supports the optical filter 15 by tightening a screw 27. The rigid plane of the half supporting body 19 is pressed to the one surface of the optical filter 15 and the elastic plane of the rubber plate 21 is pressed to the other surface. Then, the flatness of the optical filter 15 is maintained by pressing of the rigid plane and the decrease in the gripping force by the change of the optical filter 15 with lapse of time is made up by pressing of the elastic plane.

8. 发明专利

JPH07104160A OPTICAL CABLE AND METALLIC CABLE INSPECTION DEVICE 失效
公开(公告)号：JPH07104160A
公开(公告)日：1995-04-21
申请号：JP27295993
申请日：1993-10-06
申请人： FURUKAWA ELECTRIC CO LTD
发明人： HATTORI NOBUHIKO , IWADATE KAZUO
IPC分类号： G01R31/02 , G01M11/00 , G02B6/00 , G02B7/00
摘要： PURPOSE:To automatically inspect the disconnection, cross wiring, shorting, etc., of the respective coated fibers of multifiber optical cables and metallic cables by automatically switching and connecting the device to the respective coated fibers. CONSTITUTION:This inspection device has a light source section 1, an incident side coated fiber switching section 4 which is capable of switching and supplying the light from this light source section 1 to the incident ends of the respective coated fibers 3 of the optical cable 2 to be inspected, an exit side coated fiber switching section 5 which is capable of switching and connecting to the exit ends of the respective coated fibers 3, an inspection and deciding section 6 which receives the light from this exit side coated fiber switching section 5 and inspects and decides the disconnection, cross wiring, etc., of the respective coated fibers 3 of the optical cable 2 to be inspected, the input side metallic cable 8 which is switched and connected between the inspection and deciding section 6 and the input side of the metallic cable 7 to be inspected, the output side metallic cable 9 which is connected between the output side of the metallic cable 7 to be inspected and the inspection and deciding section 6 and a control section 10 which controls the light source section 1, the input side coated fiber switching section 4, the exit side coated fiber switching section 5 and the inspecting and deciding section 6. The inspection and deciding section 6 is constituted that the disconnection, cross wiring, etc., of the metallic cable 7 to be inspected can be inspected and decided.

9. 发明专利

JPH0875606A MONITORING METHOD OF OPTICAL FIBER LINE 失效
公开(公告)号：JPH0875606A
公开(公告)日：1996-03-22
申请号：JP21366594
申请日：1994-09-07
申请人： FURUKAWA ELECTRIC CO LTD
发明人： YAMASHITA TETSUHIRO , IWADATE KAZUO
IPC分类号： G01M11/02 , G02B6/00
摘要： PURPOSE: To provide the monitoring method, of an optical fiber line, in which the optical fiber line can be monitored on one end side without using a high cost measuring apparatus. CONSTITUTION: A reflector 3 which reflects an optical signal is installed at one end of at least one optical fiber 2 constituting an optical fiber line 1, and a light branching device 5 is installed at the other end of the optical fiber 2 in which the reflector 3 has been installed. An optical signal is input from the input end of the optical branching filter 5, and a reflected optical signal which has been reflected via the optical fiber 2 is measured by an optical measuring instrument B which is installed at the output end of the branching filter 5.

10. 发明专利

JPH08334629A LINE WIRE HOUSING TYPE OPTICAL SWITCH UNIT 失效
公开(公告)号：JPH08334629A
公开(公告)日：1996-12-17
申请号：JP14163595
申请日：1995-06-08
申请人： FURUKAWA ELECTRIC CO LTD , TOKYO TSUSHIN NETWORK KK
发明人： HATTORI NOBUHIKO , IWADATE KAZUO , SHIMIZU TAKAMASA , MASUDA KAZUHISA
IPC分类号： G02B6/00 , G02B26/08
摘要： PURPOSE: To attain the miniaturization of an optical transmission line switching device and to improve the operability of the device. CONSTITUTION: The unit is provided with an optical switch part 8 with plural optical connectors 9 facing onto the outer surface and a surplus part housing part 11 for housing the surplus part of the coated optical fiber which is connected to each optical connector 9, and the part 8 and the part 11 are formed into one body while making each optical connector 9 face onto the part 11.

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