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1. 发明专利

JP2002090669A METHOD FOR MANUFACTURING LIQUID DRIVE TYPE OPTICAL SWITCH 失效
公开(公告)号：JP2002090669A
公开(公告)日：2002-03-27
申请号：JP2000283789
申请日：2000-09-13
申请人： HITACHI CABLE , NIPPON TELEGRAPH & TELEPHONE , NTT ELECTRONICS CORP
发明人： TAMURA KENICHI , MURAKAMI KAZUYA , ISHIGAMI YOSHIAKI , MAKIHARA MITSUHIRO , SHIMOKAWA FUSAO , SAKATA TOMOMI , TOKO HIROYOSHI , SATO MAKOTO
IPC分类号： G02B26/08
摘要： PROBLEM TO BE SOLVED: To provide a method for manufacturing a liquid drive type optical switch which has no leakage of a refractive index matching liquid from a groove for optical path switching. SOLUTION: Alloy 15, having higher heat-resisting temperature than the resin used as a sealing member for the refractive index matching liquid 14, is adopted, and resistance to higher temperature (150 deg.C) can be obtained and the refractive index matching liquid 14 will not leak from the groove 5 for optical path switching, so that the liquid crystal drive type optical switch has high reliability.

2. 发明专利

JP2002090668A LIQUID DRIVE TYPE OPTICAL SWITCH 失效
公开(公告)号：JP2002090668A
公开(公告)日：2002-03-27
申请号：JP2000283788
申请日：2000-09-13
申请人： HITACHI CABLE , NIPPON TELEGRAPH & TELEPHONE , NTT ELECTRONICS CORP
发明人： TAMURA KENICHI , MURAKAMI KAZUYA , ISHIGAMI YOSHIAKI , MAKIHARA MITSUHIRO , SHIMOKAWA FUSAO , SAKATA TOMOMI , TOKO HIROYOSHI , SATO MAKOTO
IPC分类号： G02B26/08
摘要： PROBLEM TO BE SOLVED: To provide a liquid drive type optical switch which is free of variance in the amount of refractive index matching liquid in a groove for optical path switching. SOLUTION: A space 12, which swells in a bump shape, is formed halfway in an injection groove 11. Hence, when resin 13 for sealing is injected from the outside, after a fixed amount of refractive index matching liquid has been injected into the groove 5 for optical path switching, the resin 13 enters to up to the bump-shaped space 12 to seal it, so that the amount of the refractive index matching liquid is prevented from varying.

3. 发明专利

JP2000321514A OPTICAL SWITCH 失效
公开(公告)号：JP2000321514A
公开(公告)日：2000-11-24
申请号：JP12940699
申请日：1999-05-11
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： MAKIHARA MITSUHIRO , SHIMOKAWA FUSAO , SATO MAKOTO
IPC分类号： G02B26/08 , G02B6/122 , G02B6/35 , G02B26/02
摘要： PROBLEM TO BE SOLVED: To obtain an optical switch which can be made small-sized and simplified in productivity although the optical switch is a matrix type. SOLUTION: The matrix type optical switch having elements, which each have refractive index matching liquid filled in a gap 9 provided at the intersection of optical waveguides 3a and 3b and switch the optical path at the intersection of the optical waveguides 3a and 3 by moving the liquid in the gap 9 by electrifying an electric heater 5, in the row and a column direction is equipped with lower-layer electric wires 4 mutually connecting the electric heaters 4 of the elements arrayed in the same row direction and upper-layer electric wires 7 mutually connecting the electric heaters 5 of the elements arrayed in the same column direction, provided with an insulating layer 8 between the lower-layer electric wires 4 and upper-layer electric wires 7, and equipped with a both-end open duct 13 which is formed between adjacent elements in the row direction of the elements and have both its end linked with the outside and a connecting duct 14 which has one end communicated with the gap 9 and the outer linked with the both-end open duct 13 that is the closest to the gap 9.

4. 发明专利

JP2000292717A OPTICAL LINE SELECTING SWITCH 失效
公开(公告)号：JP2000292717A
公开(公告)日：2000-10-20
申请号：JP13119499
申请日：1999-05-12
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： KANEKO KAZUMASA , SATO MAKOTO , SHIMOKAWA FUSAO
IPC分类号： G02B26/02 , G02B6/122 , H04B10/077 , H04B10/27 , H04B10/02
摘要： PROBLEM TO BE SOLVED: To provide an optical line selecting switch permitting to substantially reduce the number of optical codes and optical connectors to be used. SOLUTION: A directive coupler 132 and communicating waveguide 133a-133d connecting to the caupler 132 in each direction are formed on an optical waveguide substrate 131; an internal optical cable 20 is connected with the communicating waveguide 133a and an external optical cable 133b is connected with the communicating cable 133b; the communicating waveguides 133c, 133d are provided with a non-reflective processing part 138; a 1st distributing waveguide 135 orthogonal to the communicating waveguides 133c, 133d is formed on the optical waveguide 131; a line test device is connected with the 1st distributing waveguide 135; a groove 136, which has a wall face deep enough to shield the waveguides 133c, 135 and can bidirectionally and totally reflect light between the waveguides 133c, 135, is arranged at the intersection of the communicating waveguide 133c and the 1st distributing waveguides 135; a liquid having an reflective index equal to the waveguides 133c, 135 is partially injected into the groove 136.

5. 发明专利

JP2000121969A OPTICAL SWITCH 失效
公开(公告)号：JP2000121969A
公开(公告)日：2000-04-28
申请号：JP29063298
申请日：1998-10-13
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： SATO MAKOTO , SHIMOKAWA FUSAO
IPC分类号： G02B26/08
摘要： PROBLEM TO BE SOLVED: To provide a novel groove shape which prevents the lifting of liquid by narrowing the width of a groove bottom by the perpendicular working tolerance of the groove which is the cause for the deterioration of a reflection characteristic and does not substantially increase the groove length as compared with heretofore in spite of a design allowing for a margin for dealing with the error in the controlled variable of liquid injection. SOLUTION: The groove 2 having a depth to shield the optical waveguides 1 intersecting with each other is formed at the intersecting part of the optical waveguides 1. The liquid 3 having the refractive index equal to the refractive index of the optical waveguides 1 moves at the width of such groove 2, by which this optical switch is actuated. In such a case, both ends of the groove are provided with points w0 of the narrow width. The width w1 in the central part of the groove is wide and the intersecting part of the optical waveguides 1 exists in the central part of the broad width.

6. 发明专利

JPH10333062A OPTICAL SWITCH AND ITS PRODUCTION 失效
公开(公告)号：JPH10333062A
公开(公告)日：1998-12-18
申请号：JP14133797
申请日：1997-05-30
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： TOKO HIROYOSHI , SATO MAKOTO , SHIMOKAWA FUSAO , NISHIDA YASUHIDE
IPC分类号： G02B26/08
摘要： PROBLEM TO BE SOLVED: To improve productivity and reliability in terms of controlling injected liquid quantity and hermetically enclosing liquid by connecting an injection duct narrower than a driving duct to the driving duct. SOLUTION: Optical waveguides 35i and 35o are crossed with optical waveguides 36i and 36o on an optical waveguide substrate 28. The driving duct 30 having a wall surface forming a specified angle with the optical axis of the optical waveguide is formed at the crossing part of the optical waveguides in order to switch an optical path. Then, the injection duct 31 for injecting refractive index matching liquid 34 in the duct 30 is formed to connect an injection duct entrance 32 with the duct 30. In such a case, the width of the duct 31 is made smaller than that of the duct 30 in order to control very small injection quantity. The duct 31 is made longer so as to prevent the liquid 34 in the duct 30 from reacting with adhesive and spoiling optical characteristic because the entrance 32 is sealed by the adhesive after injecting the liquid. The liquid 34 is heated by a heater so as to decrease the surface tension of the liquid, whereby the liquid 34 is driven.

7. 发明专利

JPH09251112A TERMINAL TREATMENT OF OPTICAL FIBER COATED WITH TENSILE FIBER REINFORCED PLASTIC AND APPARATUS THEREOF 失效
公开(公告)号：JPH09251112A
公开(公告)日：1997-09-22
申请号：JP5878296
申请日：1996-03-15
申请人： FURUKAWA ELECTRIC CO LTD , NIPPON TELEGRAPH & TELEPHONE
发明人： UCHIDA TERUYOSHI , SATO MAKOTO
IPC分类号： G02B6/00
摘要： PROBLEM TO BE SOLVED: To obtain a terminal treatment method for an optical fiber coated with tensile fiber reinforced plastic capable of easily stripping the tensile fiber reinforced plastic coating. SOLUTION: The optical fiber 1 coated with the tensile fiber reinforced plastic is bent in the prescribed position from the front end of the optical fiber 1 coated with the tensile fiber reinforced plastic to cut the internal optical fiber 2. The part in the front end direction of the cut optical fiber 1 is thereafter pulled together with the tensile fiber reinforced plastic coating 4 on the outer periphery in the direction intersecting with the axial direction of the follow part to the optical fiber 1 coated with the tensile fiber reinforced plastic, by which the tensile fiber reinforced plastic coating 4 is stripped while the front end side of the cut optical fiber 2 is projected from the tensile fiber reinforced plastic coating 4.

8. 发明专利

JPH09243939A OPTICAL SWITCH DEVICE 失效
公开(公告)号：JPH09243939A
公开(公告)日：1997-09-19
申请号：JP8322196
申请日：1996-03-12
申请人： FURUKAWA ELECTRIC CO LTD , NIPPON TELEGRAPH & TELEPHONE
发明人： YAMAGUCHI SHIZUKA , SATO MAKOTO
IPC分类号： G02B6/24 , G02B6/40 , G02B26/08
摘要： PROBLEM TO BE SOLVED: To provide a small-sized and lightweight device with simple constitution capable of easily and surely switching and connecting an optical connector. SOLUTION: Bearings 21a, 21b are arranged on a first connector holder 16 holding a first optical connector 1 in a device case 13. The bearings 21a, 21b are ratably movably fitted to cam grooves 23a, 23b of a cam groove plate 22. The cam groove plate 22 is vertically moved interlocked with rotation of a connector forward/backward operation lever 25, and the first optical connector 1 is forward/backward moved for a second optical connector 7. A second connector holder 34 holding the second optical connector 7 is moved vertically slidably. The frost optical connector 1 is separated from the second optical connector 7, and the second connector holder 34 is vertically moved, and the switch connective position of the second optical connector 7 is decided by a positioning stopper 50 and engagement between a switch pawl 54 and a recessed part 57, and the first optical connector 1 is advances and abutted on the second optical connector 7, and the optical connectors are connected and switched.

9. 发明专利

JPH0980329A OPTICAL FIBER SELECTING DEVICE 失效
公开(公告)号：JPH0980329A
公开(公告)日：1997-03-28
申请号：JP23856495
申请日：1995-09-18
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： NAKANISHI ISAO , TOMITA NOBUO , ENOMOTO YOSHITAKA , SATO MAKOTO
IPC分类号： G02B6/24 , G02B26/08
摘要： PROBLEM TO BE SOLVED: To provide an optical fiber selecting device which can reduce the size in an optical fiber array direction even when a plurality of fixed-side optical fiber cables are connected. SOLUTION: After a movable-side optical fiber 3 is moved in X direction by driving an optical fiber moving mechanism 11 and then positioned relatively to an arbitrary fixed-side optical fiber 1, the movable-side optical fiber 3 is moved in Y direction and received on the other end side of the guide groove 10a of an optical fiber holder 10, so that the arbitrary fixed-side optical fiber 1 and movable-side optical fiber 3 are held having their end surfaces opposite to each other. In this case, the optical fibers 1 of two fixed side optical fiber cables 2 in total are arrayed in the respective grooves 10a of the optical fiber holder 10, one to one, alternately; and the respective guide grooves 10a are provided at the same intervals as the external diameter of the optical fibers 1, which are arrayed nearly having no gap.

10. 发明专利

JPH08184770A DEVICE AND METHOD FOR SWITCHING TRANSMISSION LINE 失效
公开(公告)号：JPH08184770A
公开(公告)日：1996-07-16
申请号：JP32710294
申请日：1994-12-28
申请人： SUMITOMO ELECTRIC INDUSTRIES , NIPPON TELEGRAPH & TELEPHONE
发明人： SAITO KAZUTO , TAMURA MITSUAKI , SATO MAKOTO
IPC分类号： G02B6/00 , G02B26/08
摘要： PURPOSE: To provide the transmission line switching device and method which speedily and securely switch optical fibers and improve the workability of switching operation and maintenance operation as a result. CONSTITUTION: This transmission line switching device is equipped with a 1st board 20 which holds plural 1st transmission lines 12 and is arranged in a housing 18, a 2nd board 21 which has a specific interval horizontally to the 1st board 20 and holds plural 2nd transmission lines 16, and is arranged in the housing, and a manual opening/closing type hand body 46 which attaches and detaches the tip part of a 3rd transmission line 17, held loosely between the 1st board 20 and 2nd board 21 and having its terminal connected to a 2nd transmission line 16 through the 2nd board, to and from the 1st board 20.

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