OPTICAL WAVELENGTH MULTIPLEXING TRANSMISSION SYSTEM, OPTICAL WAVELENGTH MULTIPLEXER, AND RESERVE-SYSTEM CONFIRMATION METHOD

Title:

OPTICAL WAVELENGTH MULTIPLEXING TRANSMISSION SYSTEM, OPTICAL WAVELENGTH MULTIPLEXER, AND RESERVE-SYSTEM CONFIRMATION METHOD

Document Type and Number:

WIPO Patent Application WO/2017/168994

Kind Code:

A1

Abstract:

In an optical wavelength multiplexing transmission system provided with a redundant configuration constituted by an operational system and a reserve system between a first terminal apparatus and a second terminal apparatus, the first terminal apparatus is provided with: a light source that outputs dummy light; a coupler that inserts the dummy light into the reserve system; and a control unit that changes the dummy light. The second terminal apparatus is provided with: a coupler that extracts the dummy light from the reserve system; and a detector that detects the extracted dummy light. In accordance with a detection result from the detector, a path of the reserve system is determined between the first terminal apparatus and the second terminal apparatus, and the normality of the reserve system is confirmed.

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Inventors:

YAMAMOTO TETSUYA (JP)

Application Number:

PCT/JP2017/002131

Publication Date:

October 05, 2017

Filing Date:

January 23, 2017

Export Citation:

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Assignee:

NEC CORP (JP)

International Classes:

H04B10/077; H04B10/032

Domestic Patent References:

WO2014010151A1

2014-01-16

Foreign References:

JPH09312614A	1997-12-02
JP2006196938A	2006-07-27
JP2014175917A	2014-09-22

Other References: