Title:
多方路監視装置
Document Type and Number:
Japanese Patent JP6693683
Kind Code:
B2
Abstract:
There are included: a light source (11) that outputs pulsed light; an optical splitter (12) that splits the pulsed light output from the light source (11) and outputs the split pulsed light from each of a plurality of second ports; a plurality of VOAs (13) that is each connected to a corresponding one of the second ports of the optical splitter (12), and attenuates and outputs the pulsed light input from the optical splitter (12); a plurality of optical couplers (14) each of whose first port is connected to output of a corresponding one of the VOAs (13) and each of whose second port is connected to one end of a corresponding one of a plurality of transmission lines (2) to be measured; a light receiving element (15) that receives backscattered light from the one end of each of the transmission lines (2); a power adjustment unit (16) that individually controls each of the VOAs (13); and a data processing unit (17) that performs abnormality detection on each of the transmission lines (2) from a result of light reception by the light receiving element (15).
Inventors:
Noguchi Yuita
Suzuki Giant
Suzuki Giant
Application Number:
JP2020501952A
Publication Date:
May 13, 2020
Filing Date:
February 23, 2018
Export Citation:
Assignee:
Mitsubishi Electric Corporation
International Classes:
G01M11/00; H04B10/071
Domestic Patent References:
| JP2010185762A | ||||
| JP11237306A | ||||
| JP2010534855A | ||||
| JP20143439A | ||||
| JP2013134138A |
Foreign References:
| WO2005011316A1 | ||||
| WO2015135060A1 |
Attorney, Agent or Firm:
Hideaki Tazawa
Hamada Hatsune
Nakashima Shigeru
Tsujioka Masaaki
Hamada Hatsune
Nakashima Shigeru
Tsujioka Masaaki