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1. 发明专利

JPH05307132A 失效
公开(公告)号：JPH05307132A
公开(公告)日：1993-11-19
申请号：JP11281392
申请日：1992-05-01
申请人： FURUKAWA ELECTRIC CO LTD , NIPPON TELEGRAPH & TELEPHONE
发明人： YAMADA HIROYUKI , SHIGEMATSU TAKASHI , OTA TOSHIHIKO , YAMAKAWA ATSUSHI , 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 multiple optical connector is equipped with a block 20 consisting of connector main bodies which have two positioning V grooves 12 formed in their main surfaces and plural fiber V grooves formed in the bottom surfaces of recessed parts, positioning pins 17 which are arranged in spaces formed of the positioning V grooves when the connector main bodies are made to abut on each other so that the positioning V grooves face each other, 1st optical fibers 18 mounted in 1st fiber V grooves 14, plural members which are arranged in the space formed of the recessed parts when the connector main bodies are made to abut on each other to support the 1st optical fibers 18 and have plural 2nd fiber V grooves 21 formed in one main surface, and a spacer 24 which is provided between the members and supports the 2nd optical fibers 27.

2. 发明专利

JPH05288959A 失效
公开(公告)号：JPH05288959A
公开(公告)日：1993-11-05
申请号：JP8552192
申请日：1992-04-07
申请人： FURUKAWA ELECTRIC CO LTD , NIPPON TELEGRAPH & TELEPHONE
发明人： YANASE HIROYUKI , SAITO MASAMI , OTA TOSHIHIKO , YAMAKAWA ATSUSHI , MATSUMOTO MICHITO , HAIBARA TADASHI
IPC分类号： G02B6/36 , G02B6/38 , G02B6/40
摘要： PURPOSE:To obtain the laminate connector which can easily be connected by abutting without damaging a hole of an optical connector's pin at the time of an abutting connection. CONSTITUTION:Plural optical connectors which have holes for pins that a fitting pin for abutting connection penetrates are laminated and connected by the connecting jig 10 by abutting. The connecting jig 10 is provided with a connector insertion part 17 which is freely opened and closed and has an insertion groove where a pair of laminate connectors are inserted opposite each other and connected by abutting, fitting parts 15b and 16b which fit one laminate connector inserted into the connector insertion part 17 to the holding member held in the insertion groove, and a guide part 16c which freely guides a press-in member for pressing the fitting pin in the hole of the other laminate connector's pin to a slide 14.

3. 发明专利

JPH05203829A LOOP-BACK OPTICAL CONNECTOR DEVICE 失效
公开(公告)号：JPH05203829A
公开(公告)日：1993-08-13
申请号：JP1107892
申请日：1992-01-24
申请人： SUMITOMO ELECTRIC INDUSTRIES , NIPPON TELEGRAPH & TELEPHONE
发明人： KAKII TOSHIAKI , TOMITA SHIGERU , HAIBARA TADASHI
IPC分类号： G02B6/26
摘要： PURPOSE:To provide a structure which provides the integration and unification of multiunits of the loop-back optical connector device. CONSTITUTION:This device is equipped with at least a couple of single mode type optical fibers 11 and 15, a 2nd optical connector 5 having grated index type optical fibers 12 for incidence which make a light signal from one of the single mode type optical fibers 11 and 15 incident and graded index type optical fibers 14 for projection which project a light signal on the other optical fiber 11 or 15, and a reflecting means 16 which reflects the light signal from the optical fibers 12 for incidence and makes the light incident on the graded index type optical fibers 14 for projection.

4. 发明专利

JPH05188235A DROP-OFF OPTICAL CONNECTOR DEVICE 失效
公开(公告)号：JPH05188235A
公开(公告)日：1993-07-30
申请号：JP587992
申请日：1992-01-16
申请人： SUMITOMO ELECTRIC INDUSTRIES , NIPPON TELEGRAPH & TELEPHONE
发明人： KAKII TOSHIAKI , TOMITA SHIGERU , HAIBARA TADASHI
IPC分类号： G02B6/00 , G02B6/24 , G02B6/38
摘要： PURPOSE:To make a dropping-off operation efficient by providing a drop-off optical connector device which can easily branch a part or all of coated optical fibers supplied from an optical cable in a short time. CONSTITUTION:This drop-off optical connector device is equipped with a 1st optical connector A for which coated optical fibers 17 branched from the optical cable are connected, a 2nd optical connector B for which coated optical fibers 17 not branching from the optical cable are connected, a 3rd optical connector C connected to the 1st optical connector A or 2nd optical connector, a switching link mechanism which switches the 3rd optical connector between the 1st optical connector A and 2nd optical connector B by moving the 3rd optical connector C, and a case D housing the 1st optical connector A, 2nd optical connector B, 3rd optical connector C, and switching link mechanism.

5. 发明专利

JPH05157931A OPTICAL FUNCTIONAL ELEMENT COUPLING MEMBER AND MANUFACTURE THEREOF 失效
公开(公告)号：JPH05157931A
公开(公告)日：1993-06-25
申请号：JP32482191
申请日：1991-12-09
申请人： SUMITOMO ELECTRIC INDUSTRIES , NIPPON TELEGRAPH & TELEPHONE
发明人： KAKII TOSHIAKI , TOMITA SHIGERU , HAIBARA TADASHI
IPC分类号： G02B6/24 , G02B6/26 , G02B26/00
摘要： PURPOSE:To obtain a coupling member which enables high-precision positioning and its manufacturing method in the optical coupling between an optical fiber and an optical functional element. CONSTITUTION:This optical functional element coupling member is equipped with a 1st connector element 3, a 2nd connector element 4, a base substrate 5 which has a mounting space 51 for the optical function element 6 at an intermediate part in a coupling direction and fitting spaces 52 for both the connector elements at both end parts and a guide pin 8 which is interposed between the base substrate and both the connector elements and enables the positioning of the optical axes of both optical fiber end surfaces; and the connector element 3 has a fiber fixing groove 31 and a guiding groove 32 with which the guide pin couples, the connector element 4 has a fiber fixation groove 41 and a guide groove 41, and the base substrate has a guiding groove 53 with which its connector guiding pin is engaged.

6. 发明专利

JPH05127044A OPTICAL CONNECTOR AND METHOD FOR FITTING OPTICAL FIBER TO THE SAME 失效
公开(公告)号：JPH05127044A
公开(公告)日：1993-05-25
申请号：JP28769391
申请日：1991-11-01
申请人： SUMITOMO ELECTRIC INDUSTRIES , NIPPON TELEGRAPH & TELEPHONE
发明人： KAKII TOSHIAKI , HAIBARA TADASHI , MATSUMOTO MICHITO
IPC分类号： G02B6/36 , G02B6/38 , G02B6/40
摘要： PURPOSE:To easily mount the optical fiber and to make the coupling loss small by forming openings at specific parts on the internal surface of a storage part and also forming a through hole which penetrates a base body and linked with the outside of the base body. CONSTITUTION:The jacket of an optical fiber ribbon is removed and the optical fibers are inserted into the storage grooves 3a of the optical fiber holding part 3 of the optical connector from their rear surface opening parts. At the time of the insertion, a vacuum generation source is mounted in the through hole formed in the holder part 2 and vacuum suction is performed while the front surface opening parts of the storage grooves 3a of the optical fiber holding part 3 of the optical connector 1. By this vacuum suction, the pressure in the storage grooves 3a is reduced through the through hole 3d of the holder part 2 and a through hole 8 formed in a lower optical fiber holding part 3c. Consequently, the tips of the optical fibers to be inserted into the storage grooves 3c are sucked in the corresponding storage grooves 3c, so the insertion of the optical fibers into the storage grooves 3c is facilitated.

7. 发明专利

JPH0534548A OPTICAL FIBER POSITIONING MEMBER 失效
公开(公告)号：JPH0534548A
公开(公告)日：1993-02-12
申请号：JP21281091
申请日：1991-07-29
申请人： SUMITOMO ELECTRIC INDUSTRIES , NIPPON TELEGRAPH & TELEPHONE
发明人： KAKII TOSHIAKI , HAIBARA TADASHI , MATSUMOTO MICHITO
IPC分类号： G02B6/24 , G02B6/36 , G02B6/38
摘要： PURPOSE:To allow the decision of the V-contact state of guide pins with guide pin grooves and to stably attain high-accuracy coupling by providing a conductive layer on at least the surfaces of the guide pin grooves. CONSTITUTION:Optical fiber guide grooves 2 and the guide pin grooves 3 are formed by grinding, etc., on the front surface of a ceramic base material 1 of a silicon chip, etc. The conductive layer 4 is formed on the member surface including the surfaces of the guide pin grooves 3. The conductive layer 4 may be formed by methods of, for example, vapor deposition of gold, vapor deposition of aluminum and diffusion of a surface layer or ion implantation, etc. The guide pins 10 made of steel are placed on the guide pin grooves 3 and the electric resistance between two pieces of the guide pins 10 are measured. The V contact state of the guide pins 10 with the guide pin grooves 3 is easily decided in this way.

8. 发明专利

JPH04234714A OPTICAL FIBER CONNECTING METHOD AND OPTICAL FIBER CONNECTING STRUCTURE 失效
公开(公告)号：JPH04234714A
公开(公告)日：1992-08-24
申请号：JP1037291
申请日：1991-01-07
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： HAIBARA TADASHI , MATSUMOTO MICHITO , YABUTA TETSUO , KAMINOTANI TAKUYA , ISHIHARA HIROSHI
IPC分类号： G02B6/36 , H04B10/00 , H04B10/25
摘要： PURPOSE:To prevent an increase in the time for connecting optical connectors and the deterioration in service characteristics, such as maintenance, and to enhance the flexibility of coated fibers. CONSTITUTION:The optical connectors 2, 12 mounted at the ends of optical fibers are laminated and tentatively fixed in assembling members 3. The laminated optical connectors 2, 12 are connected to each other while these connectors are positioned by means of pins 6, by which optical fiber tapes 1 are collectively connected. To change over the connection of only a part of the optical fiber tapes 1, an operator opens cap parts 7 of the assembling members 3 and removes a part of the optical connectors 2, 12 from the inside of the assembling members 3. The connection is then changed over and the changed over optical connectors 2, 12 are returned into the assembling members 3 after the changeover.

9. 发明专利

JPH04199005A OPTICAL FIBER JUMPER 失效
公开(公告)号：JPH04199005A
公开(公告)日：1992-07-20
申请号：JP33265690
申请日：1990-11-29
申请人： SUMITOMO ELECTRIC INDUSTRIES , NIPPON TELEGRAPH & TELEPHONE
发明人： NISHIMURA MASAYUKI , KAKII TOSHIAKI , HAIBARA TADASHI , TOMITA SHIGERU
IPC分类号： G02B6/36 , G02B6/02 , G02B6/10
摘要： PURPOSE:To reduce connecting loss by making the mode field diameter of one end part larger than that of an intermediate part. CONSTITUTION:An optical fiber jumper is formed of a core 1, a clad 2, a hermetic coating 3, a covering 4, and mode field diameter enlarged parts 5, 6. In addition, unillustrated appropriate connectors or the like are usually provided at both ends. The hermetic coating 3 is applied to the outer periphery of the optical fiber formed of the core 1 and the clad 2, and the covering 4 is provided thereon. The mode field diameters of the both end parts 5, 6 of the optical fiber are gradually enlarged toward the end faces. Connecting loss is thereby reduced.

10. 发明专利

JPH024203A CUTTING DEVICE FOR OPTICAL FIBER 失效
公开(公告)号：JPH024203A
公开(公告)日：1990-01-09
申请号：JP15384488
申请日：1988-06-22
申请人： SUMITOMO ELECTRIC INDUSTRIES , NIPPON TELEGRAPH & TELEPHONE
发明人： OSAKA KEIJI , ASANO YASUO , HAIBARA TADASHI
IPC分类号： G02B6/00 , B26F3/00 , C03B37/16 , G02B6/25
摘要： PURPOSE:To fix the cutting position, to prevent the lack of uniformity of cutting and to improve the connection quantity of the post-stage by giving an initial flow, based on a theory of a stress rupture method and executing the cutting. CONSTITUTION:An optical fiber A is held surely in the air in a horizontal state by the upper and the lower clamp members 4a, 4b, and in a process in which a flawing cutting edge 5 moves linearly by a slide mechanism, an initial flaw is given to the optical fiber A. Thereafter, a pillow 7 descends and gives bending stress to the optical fiber A and cuts the optical fiber A. In that case, an interlock plate 14 is provided so that the pillow 7 does not come into contact with the flawing cutting edge 5, and also, a lever 12 for opening the clamp members 4a, 4b of the optical fiber by interlocking with the descent of the pillow 7 so that two opposed end faces do not come into contact with each other after the optical fiber A has been cut. In such a way, with respect to not only a multicore optical fiber but also a single core optical fiber, cutting can be realized with high accuracy, and not only the optical fiber can be connected at a low loss, but also high reproducibility can be maintained at the time of measuring the optical fiber, as well, and the workability of high efficiency can be obtained.

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