Title:
SUBMARINE BRANCHING UNIT, OPTICAL SUBMARINE CABLE SYSTEM, OPTICAL COMMUNICATION METHOD
Document Type and Number:
WIPO Patent Application WO/2019/065383
Kind Code:
A1
Abstract:
In order to provide a submarine optical transmission system that utilizes multiple wavelength bands, the submarine branching unit is provided with: a first demultiplexing part for demultiplexing a wavelength-multiplex optical signal input from a first terminal station into a first wavelength-multiplex optical signal and a second wavelength-multiplex optical signal; an optical add-drop part for outputting at least a third wavelength-multiplex optical signal included in the first wavelength-multiplex optical signal to a second terminal station, and for outputting a fifth wavelength-multiplex optical signal by multiplexing at least a fourth wavelength-multiplex optical signal included in the first wavelength-multiplex optical signal with a wavelength-multiplex optical signal input from the second terminal station; and a first multiplex part for multiplex the second wavelength-multiplex optical signal with the fifth wavelength-multiplex optical signal input from the optical add-drop part and outputting the resulting signal to a third terminal station.
Inventors:
UGAJIN KAZUSA (JP)
Application Number:
PCT/JP2018/034549
Publication Date:
April 04, 2019
Filing Date:
September 19, 2018
Export Citation:
Assignee:
NEC CORP (JP)
International Classes:
H04J14/02; H04B10/03; H04B10/075; H04B10/27; H04L45/28
Domestic Patent References:
| WO2016147610A1 | 2016-09-22 | |||
| WO2016051774A1 | 2016-04-07 | |||
| WO2015133106A1 | 2015-09-11 | |||
| WO2016017181A1 | 2016-02-04 | |||
| WO2012132688A1 | 2012-10-04 |
Foreign References:
| JP2006005938A | 2006-01-05 | |||
| JP2012205045A | 2012-10-22 | |||
| JP2017509183A | 2017-03-30 | |||
| JP2010283446A | 2010-12-16 | |||
| JP2004166306A | 2004-06-10 | |||
| JP2017188684A | 2017-10-12 |
Other References:
See also references of EP 3691148A4
Attorney, Agent or Firm:
SHIMOSAKA Naoki (JP)
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