Title:
OPTICAL COMMUNICATION WIRING CORE-LINE CONTRAST METHOD AND CORE-LINE CONTRAST SYSTEM
Document Type and Number:
WIPO Patent Application WO/2019/172056
Kind Code:
A1
Abstract:
Provided is an optical communication wiring core-line contrast method and core-line contrast system with which core-line contrast is possible for optical communication wiring to be worked in fewer work steps than was previously possible. The optical communication wiring core-line contrast system and method are for specifying the optical communication wiring to be worked from among an optical communication wiring set group containing a plurality of optical communication wiring sets, and is characterized in that an optical coupler is configured to: branch test light outputted from a light source; output one part of the branched test light to one end of the optical communication wiring to be worked via a connection port; output another part of the branched test light to a light reflector; multiplex the return light of the test light received via the connection port from the optical communication wiring to be worked and the test light reflected by the light reflector; and output this multiplexed light to an interference light measuring instrument. The interference light measuring instrument determines whether the optical communication wiring to be worked is included in one or a plurality of the optical communication wiring sets in the optical communication wiring set group on the basis of the light intensity of the multiplexed light.
Inventors:
TAKAHASHI HIROSHI (JP)
KITO CHIHIRO (JP)
TOGE KUNIHIRO (JP)
MANABE TETSUYA (JP)
KITO CHIHIRO (JP)
TOGE KUNIHIRO (JP)
MANABE TETSUYA (JP)
Application Number:
PCT/JP2019/007693
Publication Date:
September 12, 2019
Filing Date:
February 27, 2019
Export Citation:
Assignee:
NIPPON TELEGRAPH & TELEPHONE (JP)
International Classes:
G02B6/46; G01M11/00
Foreign References:
| JPH0886717A | 1996-04-02 | |||
| JP2010522896A | 2010-07-08 | |||
| JPH02230106A | 1990-09-12 | |||
| JP2001343533A | 2001-12-14 | |||
| US20070196058A1 | 2007-08-23 |
Attorney, Agent or Firm:
TANI & ABE, P.C. (JP)
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