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1. 发明专利

JPH0520965B2 失效
公开(公告)号：JPH0520965B2
公开(公告)日：1993-03-23
申请号：JP24169984
申请日：1984-11-16
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： SHINOHARA HIROMICHI , KAWASE MASAAKI
IPC分类号： H02G1/02

2. 发明专利

JPS62287520A SELF-SUPPORT CABLE 失效
公开(公告)号：JPS62287520A
公开(公告)日：1987-12-14
申请号：JP12823986
申请日：1986-06-04
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： TOMITA SHIGERU , SHINOHARA HIROMICHI , KAWASE MASAAKI
IPC分类号： H01B7/18

3. 发明专利

JPS60261322A HANGING WIRE FOR AERIAL CABLE 失效
公开(公告)号：JPS60261322A
公开(公告)日：1985-12-24
申请号：JP11769584
申请日：1984-06-08
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： TOMITA SHIGERU , FUCHIGAMI KENYA , SHINOHARA HIROMICHI
IPC分类号： H02G7/06

4. 发明专利

JPH06281534A OPTICAL FIBER COLLATION DEVICE 失效
公开(公告)号：JPH06281534A
公开(公告)日：1994-10-07
申请号：JP7053593
申请日：1993-03-29
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： MIKAWA IZUMI , SHINOHARA HIROMICHI , YAMAMOTO FUMIHIKO , FURUKAWA SHINICHI , OYAMADA YAHEI
IPC分类号： G01M11/00 , G02B27/10
摘要： PURPOSE:To provide an optical fiber collation device capable of contrast and identification of an optical fiber including a branch part. CONSTITUTION:An optical fiber collation device for performing collation and identification of an optical fiber 1 by measuring emission light emitted from the optical fiber 1 characterizes that a pair of bodies 2, 3 sandwiching at a condition to slide and bend the optical fiber 1 are equipped, a recess part 2a for housing, sliding and bending the optical fiber 1 on the surface of the body 2, said recess part 2a ad a projection part 3a with the complementing shape it are formed on the surface of the body 3, a wave guide 41 is shaped along the direction of arrangement of the optical fiber 1 o said recess part 2a and light receiving elements 42 are provided on both the end parts of the wave guide 41 respectively.

5. 发明专利

JPH04119730A OPTICAL TWO-WAY TRANSMISSION SYSTEM 失效
公开(公告)号：JPH04119730A
公开(公告)日：1992-04-21
申请号：JP23959790
申请日：1990-09-10
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： MATSUURA MASAAKI , SHINOHARA HIROMICHI , YAMASHITA ICHIRO , OKADA KENJI
IPC分类号： H04B10/00 , H04B10/25 , H04B10/54 , H04B10/548
摘要： PURPOSE:To simply constitute an external modulation mechanism without use of an optical active element and to reduce the cost of the device by realizing the modulation by a user signal onto a light supplied from a center equipment with an absolute single polarized wave optical fiber, an optical passive element such as a reflector and a piezoelectric element. CONSTITUTION:A continuous stimulated light from a stabilizing light source 13 is made incident in an optical multiplexer demultiplexer 15 via an optical fiber 23, a photocoupler 14 and an optical fiber 24, in which the light is multiplexed with a center signal from an electrooptic conversion circuit 11 and the result is sent to an optical fiber 25 in a center equipment. An optical multiplexer demultiplexer 31 of a user equipment demultiplexes the center signal from the continuous stimulated light, which is fed to a modulation section 41. A reflector 411 is fitted to a piezoelectric element 412 in the modulation section 41 and the reflector is moved in parallel with a radiation end face of an optical fiber 27, that is, in a direction to cross a radiation light attended with the elongation and contraction of the piezoelectric element 412 under the control of a modulation control circuit 413. That is, the modulated light is sent from the user equipment to the center equipment in terms of the presence of a light returned to a photoelectric conversion circuit 12 at the center equipment in response to the user signal.

6. 发明专利

JPS6336451B2 失效
公开(公告)号：JPS6336451B2
公开(公告)日：1988-07-20
申请号：JP8427779
申请日：1979-07-02
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： SHINOHARA HIROMICHI , HATANO SATOSHI , IKEDA MASAHIRO
IPC分类号： G01M11/02 , G01M11/00 , G02B6/00

7. 发明专利

JPS62209405A OPTICAL FIBER CABLE 失效
公开(公告)号：JPS62209405A
公开(公告)日：1987-09-14
申请号：JP4676686
申请日：1986-03-04
申请人： FUJIKURA LTD , NIPPON TELEGRAPH & TELEPHONE
发明人： SHAMOTO NAOKI , SUZUKI HIDEO , SUGAWARA YASUYUKI , KAWASE MASAAKI , SHINOHARA HIROMICHI
IPC分类号： G02B6/44
摘要： PURPOSE:To prevent a terminal from projecting and being drawn in when wound around a drum and extended by embedding a member with a high Young's modulus in the wall of a plastic pipe on the side wherein an optical fiber unit is inscribed, and setting a neutral point at the position where the optical fiber unit, etc., are put. CONSTITUTION:The member with the high Young's modulus is embedded in the wall of the plastic pipe 12 on the side where the optical fiber unit 14 or an optical fiber core 15 is inscribed to set the neutral point G at the position wherein the optical fiber unit 14 or optical fiber core 15 is put while reducing the longitudinal flexural rigidity below the lateral flexural rigidity. The member of the material with the high Young's modulus uses at least >=2 wire materials 16 or a tape 17, a material which has a much larger Young's modulus than plastic is advantageous in design, and high tensile strength is preferable in practical use. In concrete, a galvanized steel wire, a stainless steel wire, a glass FRP, a carbon FRP, etc., are usable.

8. 发明专利

JPS62124434A METHOD AND DEVICE FOR INSPECTING SPECIFIC REFRACTIVE INDEX DIFFERENCE OF OPTICAL FIBER 失效
公开(公告)号：JPS62124434A
公开(公告)日：1987-06-05
申请号：JP26376585
申请日：1985-11-26
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： MIKAWA IZUMI , MAEKAWA EIJI , SHINOHARA HIROMICHI
IPC分类号： G01M11/02 , G01M11/00
摘要： PURPOSE:To prevent measurement variance from being generated by finding the specific refractive index difference of an optical fiber to be measured from the relation between the loss of connection with a reference optical fiber and wavelength. CONSTITUTION:The reference fiber 22 and fiber 21 to be measured are connected with each other to receive the light and then the light reception is performed after optical fiber 22 is removed. The connection loss between the optical fibers 21 and 22 is found from the difference between the both, so that the relation between the loss depending upon the wavelength of the light source and the wavelength is measured. Then, the specific refractive index difference is found from the relation between the loss and wavelength, so the dependency upon the incidence condition of a fiber for measurement is eliminated.

9. 发明专利

JPS6150285B2 失效
公开(公告)号：JPS6150285B2
公开(公告)日：1986-11-04
申请号：JP16075779
申请日：1979-12-13
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： HATANO SATOSHI , SHINOHARA HIROMICHI , NIHEI FUMIHIRO , YAMAGUCHI KAZUO
IPC分类号： H01B7/18 , G02B6/44

10. 发明专利

JPS57192903A LAYING METHOD FOR OPTICAL FIBER CABLE 失效
公开(公告)号：JPS57192903A
公开(公告)日：1982-11-27
申请号：JP7829081
申请日：1981-05-23
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： TAMURA YASUTSUGU , SHINOHARA HIROMICHI
IPC分类号： G02B6/46 , G02B6/44 , H02G1/08
摘要： PURPOSE:To lay an optical fiber cable without the loss of its characteristics even if the mechanical strength is small by passing a guiding conduit member through a conduit line, leading the optical fiber cable into the guiding conduit member and then pulling out only the guiding conduit member. CONSTITUTION:After previously inserting two leading-in wires 2, 2' for a guiding conduit member and an optical fiber cable into a conduit line 1, the leading-in wire 2' is connected to the guiding conduit member 5 and the leading line 2 is inserted into the conduit member 5 to lead the conduit member 5 into the conduit line 1 through the leading-in wire 2'. One end P of the guiding conduit member 5 is fixed to constitute a cable leading-in wire in the conduit line 1 through the conduit member 5 by applying tension to the other end. Then a cable 13 is connected with the leading-in wire 2' and the cable 13 is led in the conduit member 5. Finally, the guiding conduit member 5 is pulled out after laying the conduit line, so that the optical fiber cable 13 can be precisely and stably laid in the conduit line 1.

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