Title:
LIGHT-TRANSMISSION-PATH-SPECTRUM MEASUREMENT DEVICE, LIGHT-TRANSMISSION-PATH SYSTEM, LIGHT-TRANSMISSION-PATH-SPECTRUM MEASUREMENT METHOD, AND COMPUTER-READABLE MEDIUM
Document Type and Number:
WIPO Patent Application WO/2020/194879
Kind Code:
A1
Abstract:
Provided are a light-transmission-path-spectrum measurement device, light-transmission-path system, light-transmission-path-spectrum measurement method, and non-transitory computer-readable medium that make it possible to acquire detailed spectrum information for the inside of a light transmission path. A light-transmission-path-spectrum measurement device (1) according to an embodiment comprises: a wavelength varying OTDR measurement unit (20) that varies and generates a wavelength of measurement light which is to be transmitted to a first light transmission path, and measures return light that is the measurement light returned by a relay device connected to the first light transmission path via a second light transmission path connected to the relay device; a light signal combination unit (11) that selects and outputs, to the first light transmission path, a wavelength of the measurement light generated by the wavelength varying OTDR measurement unit (20); a control unit (30) that controls the wavelength of the measurement light generated by the wavelength varying OTDR measurement unit (20) and the wavelength of the measurement light selected by the optical signal combination unit (11); and a measurement data processing unit (40) for processing measurement data for the return light measured by the wavelength varying OTDR measurement unit (20).
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Inventors:
NAKANO TAKEHIRO (JP)
Application Number:
PCT/JP2019/046899
Publication Date:
October 01, 2020
Filing Date:
November 29, 2019
Export Citation:
Assignee:
NEC CORP (JP)
International Classes:
G01M11/02; H04B10/071
Foreign References:
| JP2002094457A | 2002-03-29 | |||
| JP2016144013A | 2016-08-08 | |||
| JP2004023300A | 2004-01-22 | |||
| JP2009047508A | 2009-03-05 | |||
| JP2018006907A | 2018-01-11 | |||
| JP2019060548A | 2019-04-18 |
Other References:
See also references of EP 3951345A4
Attorney, Agent or Firm:
IEIRI Takeshi (JP)
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