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1. 发明专利

JPH1172669A OPTICAL FIBER CORD 失效
公开(公告)号：JPH1172669A
公开(公告)日：1999-03-16
申请号：JP13434998
申请日：1998-04-28
申请人： FURUKAWA ELECTRIC CO LTD , NIPPON TELEGRAPH & TELEPHONE
发明人： NAKAJIMA FUMINORI , WATANABE YASUHIRO , ISHII NOBUNAO , TAKEMOTO HAJIME , TACHIKURA MASAO
IPC分类号： G02B6/44
摘要： PROBLEM TO BE SOLVED: To facilitate the fixation of tensile fiber bundles to an optical fiber cord anchoring part and to impart flame retardance to an outside coating layer consisting of a UV curing type resin. SOLUTION: This optical fiber cord is formed by integrally coating a coated optical fiber ribbon 7 formed by arranging plural pieces of optical fibers 1 provided with inside coatings 3 and outside layer coatings 4 consisting of the UV curing type resins on optical fibers 2 in parallel and the tensile fiber bundles 6 by the outside coating layer 6 consisting of the UV curing type resin. At this time, only the parts of the surface layers of the tensile fiber bundles 6 consisting of many pieces of the tensile fibers in contact with the outside coating layer 6 are impregnated with the resin of the outside coating layer 6. A transparent liquid flame retardant or reaction type flame retardant is compounded into the outside coating layer 6 or the coating layers of the coated optical fiber ribbon 7.

2. 发明专利

CA2355800A1 OPTICAL MULTIPLEXING MODULE AND METHOD OF CORRECTING OPTICALAXIS THEREOF 未知
公开(公告)号：CA2355800A1
公开(公告)日：2002-02-21
申请号：CA2355800
申请日：2001-08-16
申请人： FURUKAWA ELECTRIC CO LTD
发明人： MATSUURA HIROSHI , ABE SATORU , WATANABE YASUHIRO
IPC分类号： G02B6/26 , G02B6/32 , G02B6/34 , G02B6/42 , H04J14/00
摘要： An optical multiplexing module, which is easier inadjustment of an optical axis, has an optical multiplexing element and a prism to change optical paths of input light. The module also has one or more input collimators at the input-side end thereof a single output collimator at the output-side end thereof. The optical axes of the collimators are adjustable by optical axis adjusting means. Further, according to the method of correcting the optical axes, after fabricating the collimators into the module, with an optical loss between optical parts monitored, an external force is applied in turn to a plurality of arbitrary locations around a joint portion of one optical part. This application allows a hit location showing a maximum reduction in optical loss to be foun d out. Radiating a laser beam onto an opposite-side location on the joint portion to the hit location leads to an easier correction of displacements ofthe optical axis with ease. Selected drawing: Fig.1

3. 发明专利

DE60136513D1 未知
公开(公告)号：DE60136513D1
公开(公告)日：2008-12-24
申请号：DE60136513
申请日：2001-08-16
申请人： FURUKAWA ELECTRIC CO LTD
发明人： WATANABE YASUHIRO , ABE SATORU , MATSUURA HIROSHI
IPC分类号： G02B6/26 , G02B6/32 , G02B6/34 , G02B6/42

4. 发明专利

JP2002139643A OPTICAL COUPLING MODULE AND METHOD FOR CORRECTING ITS OPTICAL AXIS 失效
公开(公告)号：JP2002139643A
公开(公告)日：2002-05-17
申请号：JP2001185811
申请日：2001-06-20
申请人： FURUKAWA ELECTRIC CO LTD
发明人： WATANABE YASUHIRO , ABE HIROSHI , MATSUURA HIROSHI
IPC分类号： G02B6/26 , G02B6/32 , G02B6/34 , G02B6/42
摘要： PROBLEM TO BE SOLVED: To provide an optical coupling module which is readily adjusted for optical axis, and to provide a method for adjusting the optical axis. SOLUTION: In the optical coupling module, which is provided with an optical coupling element and a prism changing the optical path of incident light and which is provided with one or more input collimator in the input side and an output collimator on the output side, the optical axes of the above collimators are adjusted by an optical axis adjusting means. Also, a hit location, where the reduction of an optical loss becomes maximum is found out by successively exerting external force on plural arbitrary places around the joined part of one side of optical part, while monitoring the optical loss between the optical parts after assembling the collimator into the module, and deviations in the optical axis are corrected by having the place of a joined part opposite the hit location irradiated with laser beams.

5. 发明专利

JP2001159725A OPTICAL FIBER UNIT 失效
公开(公告)号：JP2001159725A
公开(公告)日：2001-06-12
申请号：JP2000273991
申请日：2000-09-08
申请人： FURUKAWA ELECTRIC CO LTD
发明人： WATANABE YASUHIRO , IMADA EIJI , ISHII NOBUNAO
IPC分类号： G02B6/44 , C03C25/10 , C08L101/00 , G02B6/02 , G02B6/46 , H01B11/00
摘要： PROBLEM TO BE SOLVED: To provide an optical fiber unit which has good insertion property to a pipe for inserting an optical fiber and which suppresses increase in the transmission loss of light by the influences of side pressure. SOLUTION: The optical fiber unit 1 has a first jacket layer 3 on the outer surface of a coated optical fiber 2 and has a second jacket layer 4 on the outer surface of the first jacket layer 3. The first jacket layer 3 consists of a thermoplastic elastomer, while the second jacket layer 4 consists of a thermoplastic resin.

6. 发明专利

JP2002303757A OPTICAL MODULE 失效
公开(公告)号：JP2002303757A
公开(公告)日：2002-10-18
申请号：JP2001108733
申请日：2001-04-06
申请人： FURUKAWA ELECTRIC CO LTD
发明人： WATANABE YASUHIRO , KONISHI MIEKO , MATSUURA HIROSHI
IPC分类号： G02B6/32
摘要： PROBLEM TO BE SOLVED: To suppress the deviation of the optical axis of a collimator due to variation in the volume of solder material, which occurs in the solidification process of solder. SOLUTION: An optical module is formed by inserting the tip parts of collimators 2a and 2b into both end parts of a cylindrical casing 3, respectively, fixing the tip parts of the collimators 2a and 2b on the inner wall face of the casing 3 with solder. In the fixing process with soldering, the optical axes of the collimators 2a and 2b are kept coincident with each other by clamping and fixing the collimators 2a and 2b with a clamping member 12, a solder material 13 is supplied from a solder feeding port 8 of the casing 3 and melted by being heated in a state that the casing 3 is not clamped but kept free, and then the solder material 13 existing between each of the tip parts of the collimators 2a and 2b and the inner wall face of the casing 3 is cooled and solidified. The casing 3 is moved by the variation in the volume due to a rapid contraction of the solder material 13 during the solidifying process, thus the contraction force is released. The deviation of the optical axes of the collimators 2a and 2b due to the contraction force is suppressed.

7. 发明专利

JP2001133656A MODULAR OPTICAL CONNECTOR PLUG 失效
公开(公告)号：JP2001133656A
公开(公告)日：2001-05-18
申请号：JP31101199
申请日：1999-11-01
申请人： FURUKAWA ELECTRIC CO LTD
发明人： NISHIGUCHI MASAMI , HASHIMOTO MASARU , WATANABE YASUHIRO
IPC分类号： G02B6/36
摘要： PROBLEM TO BE SOLVED: To miniaturize a modular optical connector plug and to assemble it without requiring troublesome processings or works. SOLUTION: A plug main body 14, having a device-attaching/detaching lever 16 is provided with an aperture part 20, which communicates with a guide groove 12 for an optical fiber cord, in the face opposite to the face having the lever 16. A plastic optical fiber cord inserted through a guide groove 12 of the plug main body 14 is fixed elastically in the guide groove 12 by a spring piece 22a of a cord-retaining plate 22 inserted into the aperture part 20. This cord-retaining plate 22 is held in the aperture part 20 by a retaining plate fixing member 24, which is inserted into the aperture 20 and is fixed. An optical fiber of the optical fiber cord is fixed to a sheath-shaped projection part 28 by an adhesive introduced through an adhesive introduction hole 30 provided in the sheath-shaped projection part 28.

8. 发明专利

JPH11176529A MODULAR TYPE CONNECTOR PLUG 失效
公开(公告)号：JPH11176529A
公开(公告)日：1999-07-02
申请号：JP34251097
申请日：1997-12-12
申请人： FURUKAWA ELECTRIC CO LTD
发明人： WATANABE YASUHIRO , HASHIMOTO MASARU , NISHIGUCHI MASAMI
IPC分类号： G02B6/36 , H01R4/24 , H01R24/00 , H01R23/02
摘要： PROBLEM TO BE SOLVED: To provide a small modular type connector plug with a good workability that can be simultaneously connected to a plastic optical fiber and an insulated wiring. SOLUTION: A terminal 11 for connecting an electric wire to be pressed in is assembled on one surface of a plug main body l, and an attaching/ detaching lever 3 to/from a modular jack on other surface. The terminal 11 is in a sectional clamp shape, and a stick blade 12 is formed on its leg part. An electric wire insertion hole 6 is formed at a position corresponding to the tip of the stick blade 12 on the plug main body, and an optical fiber insertion hole 14 is formed at a position opposing to an abdominal part of the terminal 11. When an insulated electric wire is inserted in the electric wire insertion hole 6 and the terminal 11 is pressed in by inserting a plastic optical fiber in the optical fiber insertion hole 14, the stick blade 12 of the terminal 11 sticks in the insulated electric wire as well as the abdominal part of the terminal 11 depresses the plastic optical fiber to fix it.

9. 发明专利

JP2001210171A WIRING SYSTEM 失效
公开(公告)号：JP2001210171A
公开(公告)日：2001-08-03
申请号：JP2000018011
申请日：2000-01-25
申请人： FURUKAWA ELECTRIC CO LTD
发明人： WATANABE YASUHIRO , HATTORI YOSHINORI
IPC分类号： H01H9/54
摘要： PROBLEM TO BE SOLVED: To provide a wiring system for high-speed transmission easy in on-off operation of power switches that can perform on-off operation of power switches of plural optical-to-electrical and electrical-to-optical converters connected with each other by simple wiring of optical fibers by a single on-off operation of any one of the switches. SOLUTION: The system comprises plural optical-to-electrical and electrical- to-optical converters 40 connected in parallel to a power source 1 and connected with each other by optical fibers 30 and power switches 10, 11, and 12 connected in series between the power source 1 and the converters. On off operation of power source for all the converters is performed by a single on-off operation of an arbitrary one of the switches.

10. 发明专利

JPH11218645A MODULAR TYPE OPTICAL CONNECTOR PLUG 失效
公开(公告)号：JPH11218645A
公开(公告)日：1999-08-10
申请号：JP3368798
申请日：1998-01-30
申请人： FURUKAWA ELECTRIC CO LTD
发明人： WATANABE YASUHIRO , HASHIMOTO MASARU , NISHIGUCHI MASAMI
IPC分类号： G02B6/38 , G02B6/40
摘要： PROBLEM TO BE SOLVED: To easily manufacture the modular type optical connector plug to small size without breaking a plastic optical fiber. SOLUTION: On the side of the connection end surface 6 of a housing 5 provided with a pressure member engagement recessed part 10 and an optical fiber guide groove 11, an optical fiber insertion cylinder 2 having an optical fiber insertion hole 1 is formed projecting and around the root of the optical fiber insertion cylinder 2, a recessed part 3 which is sectioned in a doughnut shape is provided as an engagement recessed part for positioning with a connection-opposite side plug reception member. An optical cord 20 is inserted into the optical fiber guide groove 11 and optical fiber insertion hole 1 and pressed with a metal terminal plate 15 engaging the pressure member engagement recessed part 10. On the side of the bottom surface 9 of the housing 5, a lever 4 projecting slantingly down is provided and allowed to freely bend and move and while a lever 4 is drawn to the side of the bottom surface 9 of the housing 5, the side of the connection end surface 6 of the housing 6 is engaged with the connection-opposite side plug reception member to make a connection.

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