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41. 发明专利

JPH10123439A OPTICAL SWITCH 失效
公开(公告)号：JPH10123439A
公开(公告)日：1998-05-15
申请号：JP29459296
申请日：1996-10-16
申请人： FURUKAWA ELECTRIC CO LTD , NIPPON TELEGRAPH & TELEPHONE
发明人： NARAOKA SEIICHI , OKUDA MAKOTO , ENOMOTO YOSHITAKA
IPC分类号： G02B26/08 , G02B6/35 , G02B6/36
摘要： PROBLEM TO BE SOLVED: To provide the optical switch in which the switching control constitution is simple, the switching efficiency is superior, the size is reduce and the capacity is increased. SOLUTION: Plural fiber accommodating grooves 4 are formed on a groove forming substrate 1 and fixed side optical fibers 5 are arranged in the grooves 4 and fiber array units 8 are formed. The units 8 are laminated through gaps. A master fiber 10 is arranged corresponding to the unit 8 of each layer. The fiber 10 of each layer is supported and fixed by a common master fiber supporting body 12. The body 12 is movement controlled by a fiber moving control means 13 only in the arranged direction of the grooves 4. When the fiber 10 is moved to the position directly above the groove 4 to which the fiber 5, that is connected to the fiber 10, is stored, the fiber 10 is pressed down to the groove 4 and is held and is connected to the fiber 5 which is the connection destination.

42. 发明专利

JPH09170963A APPARATUS FOR TESTING BEAM PATH 失效
公开(公告)号：JPH09170963A
公开(公告)日：1997-06-30
申请号：JP33178595
申请日：1995-12-20
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： ENOMOTO YOSHITAKA , TOMITA NOBUO , TERUI HIROSHI
IPC分类号： G01M11/00 , G01M11/02 , H04B10/07 , H04B10/08
摘要： PROBLEM TO BE SOLVED: To provide a beam path-testing apparatus in which each unit is formed into a compact module to be freely attached/detached. SOLUTION: The apparatus is constituted of a transmitting part 71 including a loss-measuring unit 73, a pair collating unit 74, an optical communication unit 75 and a CPU 72, and a detecting part 81 including an optical measurement unit 83, an optical communication unit 84, a CPU 82 and a sensor 85. The loss-measuring unit 73 and optical communication units 75, 84 are formed into modules. An optical loss measurement module has a one-input, two-output bi- directional wavaguide type coupler, and an optical communication module has a one-input, two-output two-way waveguide type coupler. Treatment of an excessive length of an optical fiber is eliminated in the modules. Each unit is designed to be freely attached/detached to the CPUs 72, 82. A sensor part has the sensor main body 85 and an attachment 86 which includes one that is equipped with a connecting means for a connector of the optical fiber and one that is provided with a means for bending the optical fiber thereby generating a leak light.

43. 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.

44. 发明专利

JPH08247897A AUTOMATICALLY ANALYZING METHOD FOR OPTICAL LINE CHARACTERISTICS 失效
公开(公告)号：JPH08247897A
公开(公告)日：1996-09-27
申请号：JP5020295
申请日：1995-03-09
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： ENOMOTO YOSHITAKA , TOMITA NOBUO
IPC分类号： G01M11/02 , G01M11/00
摘要： PURPOSE: To automatically calculate connection loss even for short connection intervals by using a back propagation type neural network corresponding to the connection intervals even for the near section of connector connecting point intervals. CONSTITUTION: Measurement conditions are optimized in a control arithmetical part 3 in an optical pulse testing part 2 to measure and analyze the measurement conditions in the testing part 2 and in a data processing part 4, respectively. A measured data sequence is fed into the processing part 4. A differential coefft. sequence at each point is prepared from the data sequence. A connector connecting position and a difference number sequence at a point of distance intervals, a half of pulse width, are obtained based on the width of Fresnel reflection from the differential coefft. sequence. A fusion connecting point position is obtained based on splice from the differential coefficient to obtain a connection point section by using each connecting point position as a reference. A normalized data sequence is inputted to the input layer of a neutral network. A value form an output layer is computed to obtain connector connecting loss. Finally, analyzed results, the connection loss of an optical line, cable loss, reflection amount, their generated positions, and a line loss failure position, are displayed on a display part 6 to terminate analysis.

45. 发明专利

JPH08163033A METHOD FOR TESTING OPTICAL LINE 失效
公开(公告)号：JPH08163033A
公开(公告)日：1996-06-21
申请号：JP30208294
申请日：1994-12-06
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： TOMITA NOBUO , KIMURA KATSURA , ENOMOTO YOSHITAKA , NAKANISHI ISAO
IPC分类号： G01M11/00 , G02B6/00 , H04B10/07 , H04B10/071 , H04B10/077 , H04B10/08
摘要： PURPOSE: To reduce the test time and cost by applying parallel operation to devices and parallel processing to a test of an optical pulse. CONSTITUTION: A CPU 7 executes continuously an operation command to a coated optical fiber selector 5 selecting optical fibers 3a-3d and a measurement condition setting command of an optical pulse test equipment 6 testing the selected optical fiber. In the case of continuous test for the plural optical fibers 3a-3d, after summing averaging processing of the optical fibers 3a-3d is finished, the CPU 7 commands the operation of the coated optical fiber selector 5 to select a succeeding optical fiber from among the optical fibers 3a-3d and after transfer of measurement data of the optical fiber from the test equipment 6 to the CPU 7 is finished, the CPU 7 commands the operation of setting of measurement condition of a succeeding optical fiber to the test equipment 6. After the CPU 7 commands the setting of the measurement condition of the succeeding optical fiber to the test equipment 6, the measurement data transferred from the test equipment 6 are analyzed and displayed except the time when the CPU 7 is operating.

46. 发明专利

JPH08149075A OPTICAL PATH TEST SYSTEM 失效
公开(公告)号：JPH08149075A
公开(公告)日：1996-06-07
申请号：JP28624194
申请日：1994-11-21
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： TOMITA NOBUO , KIMURA KATSURA , ENOMOTO YOSHITAKA , NAKANISHI ISAO
IPC分类号： H04B10/07 , H04B10/073 , H04B10/2507 , H04B10/08
摘要： PURPOSE: To store the optical fibers with high density and high efficiency by providing a function to place the mobile photometric fibers countering at least two optional optical fibers opposite to each other and then to switch the optical paths. CONSTITUTION: When an optical pulse test is applied to an optical fiber terminated at a 2nd test station building 4, a test core wire and the test items are instructed to a CPU 9 of a test controller 5 from a work station via a data communication circuit 17. Thus the CPU 9 controls the test operations of a test device 10 and an LXM core wire selector by programs. When a control signal is instructed, an optical pulse test device 10a turns on a filter type switch. Then a selector 11 connects together a head part optical fiber 31a, a test optical fiber 28a fixed at a matrix part 22a, a head part optical fiber and a test optical fiber 28b. At the mobile side, the optical fibers countering the optical fibers of the fixed side are placed opposite to each other and the optical paths are switched.

47. 发明专利

JPH0749288A AUTOMATIC ANALYZING METHOD OF OPTICAL PATH CHARACTERISTIC 失效
公开(公告)号：JPH0749288A
公开(公告)日：1995-02-21
申请号：JP19322993
申请日：1993-08-04
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： TOMITA NOBUO , ENOMOTO YOSHITAKA , OYAMADA YAHEI , ATOBE NAOYUKI , NAGASAKI TAKASHI
IPC分类号： G01M11/00
摘要： PURPOSE:To reduce testing operation for the setting of threshold and parameter changing operation for a program by incorporating data, obtained from an optical pulse tester, as coordinate data into a computer, and using the code change of a differential coefficient for the detection of a connecting point. CONSTITUTION:Light is let enter optical fibers 2-1, 2-2a-2-2d from an optical pulse testing part 1. The data obtained from the testing part 1 is incorporated into a data processing part 6 (computer) as the coordinate data (Xi, Yi) of an ordinate axis indicating loss and an abscissa axis X indicating distance, and a differential coefficient in each coordinate is obtained. The loss of a cable block, connecting loss and reflecting loss in connector connecting parts 3-1, 3-1a, connecting loss in fusion connecting parts 3-2a, 3-2b, and the whole line loss are obtained by data processing. The obtained cable block loss, connecting loss reflection quantity, the generated positions thereof, the whole line loss and failure positions are displayed on a display part 8.

48. 发明专利

JP2003241044A OPTICAL FIBER WIRING SYSTEM 审中-公开
公开(公告)号：JP2003241044A
公开(公告)日：2003-08-27
申请号：JP2003075990
申请日：2003-03-19
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： URUNO SHIGENORI , TACHIKURA MASAO , IZUMIDA CHIKASHI , MINE TSUNEJI , ENOMOTO YOSHITAKA , NAKAO NAOKI , TOMITA NOBUO , HIROOKA AKIRA , TAKEMOTO HAJIME
IPC分类号： G02B6/46
摘要： PROBLEM TO BE SOLVED: To provide an optical fiber wiring system which can make a switching connection operation efficient by realizing high-density mounting of a subscriber optical fiber cable and an in-office optical fiber cable. SOLUTION: An optical fiber wiring system 401 is provided with: a terminating function part 480 of a terminal station device side which terminates an optical fiber cable 415; a terminating function part 481 of the terminal device side which terminates an optical fiber cable 417; a cross-connect function part 427 which reconnects an optical fiber of the optical fiber cable 415 and an optical fiber of the optical fiber cable 417; an optical wiring function part 429 which connects the optical fiber from the terminating function part 480 of the terminal station device side to the cross-connect function part 427; and an optical wiring module equipped with a test access function part 426 which inputs and outputs test light to the optical fiber of the optical fiber cable, and an optical fiber selecting function part 430 which selects an input/output port for the test light. COPYRIGHT: (C)2003,JPO

49. 发明专利

JP2001091755A HOLDING TERMINAL STORING RACK FOR OFFICE DISTRIBUTION SYSTEM FOR OPTICAL FIBER SUBSCRIBER COMMUNICATION 失效
公开(公告)号：JP2001091755A
公开(公告)日：2001-04-06
申请号：JP26383599
申请日：1999-09-17
申请人： FURUKAWA ELECTRIC CO LTD , NIPPON TELEGRAPH & TELEPHONE
发明人： TOKIYAMA YOSHIKI , OKUDA MAKOTO , NARAOKA SEIICHI , ENOMOTO YOSHITAKA , IZUMIDA CHIKASHI , MINE TSUNEJI
IPC分类号： G02B6/00 , H04Q1/14
摘要： PROBLEM TO BE SOLVED: To obtain a holding terminal storing rack capable of storing surplus length parts and tip end connectors of holding coated optical fibers for intermediate connection more than heretofore. SOLUTION: On the frame 23 of the rack, plural storing bags 24 are supported that store the extra length parts 10Aa', 10Ba' and the tip end connectors 11Aa, 11Ba of the unused holding coated optical fibers 10Aa, 10Ba for intermediate connection.

50. 发明专利

JP2000235122A OPTICAL PARTS HOUSING DEVICE AND METHOD FOR REMOVING WIRING OF OPTICAL PARTS HOUSED IN OPTICAL PARTS HOUSING DEVICE 失效
公开(公告)号：JP2000235122A
公开(公告)日：2000-08-29
申请号：JP3584199
申请日：1999-02-15
申请人： FURUKAWA ELECTRIC CO LTD , NIPPON TELEGRAPH & TELEPHONE
发明人： NARAOKA SEIICHI , NAKANO TAKEYUKI , OKUDA MAKOTO , TOKIYAMA YOSHIKI , ENOMOTO YOSHITAKA , IZUMIDA CHIKASHI , MINE TSUNEJI
IPC分类号： G02B6/00
摘要： PROBLEM TO BE SOLVED: To provide an optical parts housing device which facilitates the removal of wiring between optical parts and is high in the reliability of optical connection of the optical parts to each other. SOLUTION: Connection relay parts 39 having junctures 38 of the number corresponding to the number of respective optical fiber junctures 40 and 41 are disposed between the optical fiber junctures 40 of a splitter module 3 and the optical fiber junctures 41 of an optical fiber branching module 4. First optical fibers 6a drawn out of the respective optical fiber junctures 40 of the splitter module 3 are nonattachably and nondetachably connected to second optical fibers 6b in the respective junctures 38 of the connection relay parts 39. The second optical fibers 6b are connected to the optical fiber junctures 41 of the optical fiber branching module 4. The second optical fibers 6b are disconnected from the first optical fibers 6a at the junctures 38 and the second optical fibers 6b are hauled and taken off from the optical fiber branching module 4 side when the wiring between the splitter module 3 and the optical fiber branching module is removed.

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