OPTICAL TRANSMISSION PATH INSPECTING SYSTEM, AND OPTICAL TRANSMISSION PATH INSPECTING DEVICE

Title:

OPTICAL TRANSMISSION PATH INSPECTING SYSTEM, AND OPTICAL TRANSMISSION PATH INSPECTING DEVICE

Document Type and Number:

WIPO Patent Application WO/2020/250782

Kind Code:

A1

Abstract:

This inspecting system is provided with first and second inspecting devices, and a loss calculating unit. Each of the first and second inspecting devices includes: a light source unit; a plurality of light input/output ports; an optical switch selectively linking the light source unit to each light input/output port; a first light detecting unit for detecting a first intensity of test light that has been input from the counterpart testing device and has passed through the optical switch; a second light detecting unit for detecting a second intensity of test light directed from the light source unit toward the optical switch; a third light detecting unit that is optically linked to the other end of a test optical fiber of which one end is connected to the plurality of light input/output ports, and that detects a third intensity of test light received from the light source unit by way of the test optical fiber; and an internal loss recording unit for recording optical path losses internal to the device, obtained on the basis of a difference between the third intensity and the second intensity.

Inventors:

FUKUMOTO GOUICHI (JP)
HISHIKAWA YOSHIFUMI (JP)
TSUZAKI TETSUFUMI (JP)
MIYAMOTO TOSHIYUKI (JP)
OTSUKA KENICHIRO (JP)

Application Number:

PCT/JP2020/021989

Publication Date:

December 17, 2020

Filing Date:

June 03, 2020

Export Citation:

Click for automatic bibliography generation Help

Assignee:

SUMITOMO ELECTRIC OPTIFRONTIER CO LTD (JP)
SUMITOMO ELECTRIC INDUSTRIES (JP)

International Classes:

G01M11/02; H04B10/077

Foreign References:

US20160164601A1	2016-06-09
US20190140739A1	2019-05-09
JP2003207413A	2003-07-25
JPH04138332A	1992-05-12
JP2019108603A	2019-07-04
JP2000206004A	2000-07-28

Other References: