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1. 发明专利

IT1266568B1 未知
公开(公告)号：IT1266568B1
公开(公告)日：1997-01-09
申请号：ITMI931635
申请日：1993-07-23
申请人： ANDO ELECTRIC , NIPPON TELEGRAPH & TELEPHONE
发明人： MAEDA MIKIO , ADACHI SHOJI , SATO MITSUHISA , TAKEUCHI NOBUAKI , ATOBE NAOYUKI , ARII MASAHITO , SUZUKI HIDEKI
IPC分类号： G01M11/02 , G01J20060101 , G01J11/00 , G02B20060101

2. 发明专利

ITMI931635A1 DISPOSITIVO DI MISURAZIONE DI ATTENUAZIONE DI FIBRA OTTICA UTILIZZANTE LAMINE DI RIFLESSIONE 未知
公开(公告)号：ITMI931635A1
公开(公告)日：1995-01-23
申请号：ITMI931635
申请日：1993-07-23
申请人： ANDO ELECTRIC , NIPPON TELEGRAPH & TELEPHONE
发明人： ADACHI SHOJI , ARII MASAHITO , ATOBE NAOYUKI , MAEDA MIKIO , SATO MITSUHISA , SUZUKI HIDEKI , TAKEUCHI NOBUAKI
IPC分类号： G01M11/02 , G01J20060101 , G01J11/00 , G02B20060101

3. 发明专利

JPH09196810A OPTICAL FIBER LINE MONITORING DEVICE 失效
公开(公告)号：JPH09196810A
公开(公告)日：1997-07-31
申请号：JP658596
申请日：1996-01-18
申请人： SUMITOMO ELECTRIC INDUSTRIES , NIPPON TELEGRAPH & TELEPHONE
发明人： MAKI HISAO , HATA YOICHI , OKAMOTO YOICHI , OZAWA KAZUMASA , HAMADA SHINKO , NAKAO NAOKI , NAKABAYASHI YASUNORI , ATOBE NAOYUKI
IPC分类号： G01M11/00 , G02B6/38 , H04B10/03 , H04B10/07 , H04B10/071 , H04B10/079 , H04B10/08
摘要： PROBLEM TO BE SOLVED: To provide an optical fiber line monitoring device which is easy to locate the place of failure. SOLUTION: The optical fiber line monitoring device is equipped with a plurality of light branching modules 10 in which a photo-coupler 11 is installed, a coated fiber selector 20 to make photo-coupling of a branched coated fiber 12 branched from each photo-coupler 11 selectively with a master side optical fiber 21, and a tester 30 which makes a test beam of light incident on and emitted from the master side fiber 21. At least one of the coated fiber selector 20 and tester 30 is composed of a plurality of attachable/detachable packages A, and each package A is equipped with failure sensors 23a, 24a... to sense the failed condition in the package. In case where any package goes in failure, the sensors 23a, 24a... installed in the package part, where the failure is generated, can detect the place of failure and failed condition.

4. 发明专利

JPH0973036A OPTICAL SWITCH 失效
公开(公告)号：JPH0973036A
公开(公告)日：1997-03-18
申请号：JP22909695
申请日：1995-09-06
申请人： SUMITOMO ELECTRIC INDUSTRIES , NIPPON TELEGRAPH & TELEPHONE
发明人： TORII KENICHI , MURAKAMI TAKASHI , ATOBE NAOYUKI , NAKAO NAOKI , OMOTO KIYOSHI , EBIHARA TAKASHI
IPC分类号： G02B6/38 , G02B26/08
摘要： PROBLEM TO BE SOLVED: To provide a highly reliable optical switch capable of accurately optically connecting a 1st optical fiber and a 2nd optical fiber. SOLUTION: This optical switch is equipped with an optical fiber fixing arm 41 where the 2nd optical fiber 2 is fixed, a pressing member 42 pressing the tip of the arm 41 in an optical connection direction, and an arm driving mechanism 43 moving the tip of the arm 41 in an optical connection releasing direction and separating the optical fiber 2 from an optical fiber arraying groove 15. The arm 41 has spring property energizing the tip in the optical connection direction, and a state where the optical fiber 2 is introduced in the groove 15 is the normal state of the arm 41. In such a state, spring force is hardly exerted on the optical fiber 2, and the optical fiber 2 does not shake in the groove 15 to become stable. Therefore, the 1st optical fiber 1 and the 2nd optical fiber 2 are accurately optically connected.

5. 发明专利

JPH0829290A OPTICAL COMPONENT INSPECTION APPARATUS 失效
公开(公告)号：JPH0829290A
公开(公告)日：1996-02-02
申请号：JP15890894
申请日：1994-07-11
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： HANABUSA HIROAKI , SENDA KAZUNORI , OGUCHI TAISUKE , MORINAKA AKIRA , ATOBE NAOYUKI
IPC分类号： G01N21/17 , G01M11/00
摘要： PURPOSE:To provide an optical characteristic inspection method and an apparatus which measure various optical characteristics of many optical components without the intermediary of human hands in the halfway part of a series of measurements. CONSTITUTION:A light source 16 and the like are installed. An input port changeover device 12 which selects one arbitrary port from input ports of an optical component 10 so as to be used as an input port is installed. An output port changeover device 13 which selects one arbitrary port from output ports of the optical component 10 so as to be connected to a first port or a second port is installed. Beam splitters 14 which branch a beam of light from the light source into two beams of light and in which branching ports on one side are connected to respective input ports are installed. A reference beam port changeover device 15 which selects one arbitrary port from branching ports on the other side of the beam splitters 14 so as to be used as a reference beam port is installed. A photodetector 24 is installed. A reference-beam detector 25 is installed. A light-source changeover device 26 by which the light from the light source is changed over, and connected, to the input port for the input-port changeover device or to the second port for the output-port changeover device 13 is installed.

6. 发明专利

JPH06167425A DEVICE AND METHOD FOR ESTIMATING DETERIORATION TIME OF OPTICAL LINE 失效
公开(公告)号：JPH06167425A
公开(公告)日：1994-06-14
申请号：JP7981293
申请日：1993-04-06
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： TOMITA NOBUO , KUWABARA TSUNEO , ATOBE NAOYUKI , NAGAI YOSHIFUMI
IPC分类号： G01M11/02 , G01M11/00 , G02B6/00 , H01B11/22 , H04M3/36
摘要： PURPOSE:To provide a prevention and maintenance system related to optical line equipment for preventing the sudden interruption of communication service by estimating the deterioration of an optical line and executing planned core wire changeover and repairing before the optical line deterioration. CONSTITUTION:A tester 4 periodically measuring the characteristics of an optical line is constituted of a test data collecting and judging device 5 collecting data from the tester 4 through a data circuit 9 to judge abnormal data, a data base 6 receiving abnormal data and equipment data, a deterioration estimation device 7 estimating the deterioration state of the optical line from the abnormal data of the data base 6 and a display device 8 displaying a deterioration estimation result.

7. 发明专利

JPH0643069A APPARATUS FOR MEASURING ATTENUATING AMOUNT OF OPTICAL FIBER USING REFLECTING PALTE 失效
公开(公告)号：JPH0643069A
公开(公告)日：1994-02-18
申请号：JP21712892
申请日：1992-07-23
申请人： ANDO ELECTRIC , NIPPON TELEGRAPH & TELEPHONE
发明人： MAEDA MIKIO , ADACHI SHOJI , SATO MITSUHISA , TAKEUCHI NOBUNARI , ATOBE NAOYUKI , ARII MASAHITO , SUZUKI HIDEKI
IPC分类号： G01M11/02 , G01J20060101 , G01J11/00 , G02B20060101
摘要： PURPOSE:To obtain the absolute value at the level of reflected light from each point of an optical fiber by obtaining the attenuating amount in the optical fiber even during the optical communication between terminals. CONSTITUTION:AN OTDR 1 emits light pulses 11 having a wavelength lambdaa. The output of the OTDR 1 is connected to a terminal 2A of an optical directional coupler 2. An optical attenuator 3 is connected to a branching terminal 2C of the optical directional coupler 2. A reflecting plate 2 is connected to the output of the optical attenuator 3. The output of a terminal 5 is connected to a terminal 6A of an optical directional coupler 6. The starting edge of the optical fiber 10 is connected to a direct terminal 6B. A direct terminal 2B of the optical directional coupler 2 is connected to a branching terminal 6C. The terminating edge of the optical fiber 10 is connected to a terminal 7A of an optical directional coupler 7. The input of a terminal 8 is connected to a direct terminal 7B. A reflecting plate 9 is connected to a branching terminal 7C of the optical directional coupler 7.

8. 发明专利

JPH0634824A OPTICAL FIBER CONNECTION BOX 失效
公开(公告)号：JPH0634824A
公开(公告)日：1994-02-10
申请号：JP18545392
申请日：1992-07-13
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： ASANO TOSHIHIDE , SHIMIZU FUMIO , ATOBE NAOYUKI , SUGAWARA AKIRA
IPC分类号： G02B6/00 , G02B6/255
摘要： PURPOSE:To provide an optical fiber connection box by which works such as line switching of coated optical fiber can be performed easily and also security between communication equipments is secured. CONSTITUTION:An extra length storing case 19 housing coated optical fiber 16 at a line equipment side and an extra length storing case 20 housing coated optical fiber 17 at a terminal equipment side are arranged side by side with a specific space, and a core wire connection part 21 of the coated optical 16, 17 is provided at the front side of the extra length storing case 19 on the one side, and a core wire holder 25 securing allowable curvature radius of the optical fiber is provided between each of extra length storing cases 19, 20, thus the connection box is constituted.

9. 发明专利

JPS62274824A SWICHING DEVICE FOR COMMUNICATION LINE 失效
公开(公告)号：JPS62274824A
公开(公告)日：1987-11-28
申请号：JP11793586
申请日：1986-05-22
申请人： FUJIKURA LTD , NIPPON TELEGRAPH & TELEPHONE
发明人： YOSHIMURA HIROYASU , TAGUCHI MORIHIKO , TAKAGI TSUTOMU , TSUCHIYA YUZO , MATSUHASHI SATOSHI , ATOBE NAOYUKI
IPC分类号： H04B1/74
摘要： PURPOSE:To reduce remarkably the memory capacity and to improve the reliability at core line switching by providing a static characteristic measuring means measuring the static characteristic of the 1st and 2nd variable resistive elements, a dynamic measuring means and a switching CONSTITUTION:The titled device consists of the static characteristic measuring means 12 with simple circuit constitution measuring each currentresistance characteristic of 1st and 2nd photocoupler type variable resistive elements 6b, 10b discretely in a spot way at a proper measuring interval and storing it in a prescribed memory 2 under the control of a CPU 1, a dynamic characteristic measuring means 13 checking whether or not the specific control function to the variable resistive elements 6b, 10b obtained by the result of the static characteristic measurement is used for the actual core line switching, and a core wire switching means connecting the core wire switchingly to the variable resistive elements 6b, 10b while adjusting the resistance according to the control function after the end of check. Since the expected resistance between spot current-resistance characteristic data stored in the memory is realized while the resistance is calculated minutely and smoothly by a CPU based on the said data, the memory capacity is reduced remarkably.

10. 发明专利

JPS61284138A SWITCHING DEVICE FOR COMMUNICATION LINE 失效
公开(公告)号：JPS61284138A
公开(公告)日：1986-12-15
申请号：JP12585885
申请日：1985-06-10
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： KOZONO FUMINORI , ATOBE NAOYUKI , TANAKA KAZUHIKO
IPC分类号： H04J3/16 , H04M11/00
摘要： PURPOSE:To facilitate multiplexing a communication line by switching a switching circuit so that a communication signal passes between the first and the second terminals if an OR circuit has the OR output but switching the switching circuit so that the communication signal passes between the first and the third terminals if it has not the OR output. CONSTITUTION:Switching devices TSWa and TSWb are installed in a telephone station A and a subscriber's home B respectively. Devices TSWa and TSWb are connected to telemetering device TMR of lower priority level when communication is not performed, and a telephone call signal is transmitted only when telephone service is performed. Each of signal detectors DETa and DETa' of devices TSWa and TSWb detect the call signal of, for example, 16Hz to switch the connection between terminals alpha and beta. Each of signal detectors DETb and DETb' of devices TSWa and TSWb detects a DC loop of a line closed by a telephone TE to switch terminals to the connection between terminals alpha and beta.

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