Title:
OPTICAL AMPLIFIER, OPTICAL NETWORK INCLUDING THE SAME, AND METHOD FOR AMPLIFYING OPTICAL SIGNAL
Document Type and Number:
WIPO Patent Application WO/2017/183061
Kind Code:
A1
Abstract:
In order to solve the problem that the power consumption of optical amplifiers is not optimized over the life time of a network whose capacity in use varies, an optical amplifier according to an exemplary aspect of the invention includes a gain medium for amplifying a plurality of optical channels, the gain medium including a plurality of cores through which the plurality of optical channels to propagate respectively and a cladding area surrounding the plurality of cores; monitoring means for monitoring the plurality of optical channels inputted into the gain medium and producing a monitoring result; a first light source configured to emit a first light beam to excite the cladding area; a second light source configured to emit a plurality of second light beams to excite each of the plurality of cores individually; and controlling means for making a decision as to whether each of the plurality of cores to transmit one of the plurality of optical channels based on the monitoring result, and controlling the first light source and the second light source based on the decision.
Inventors:
LE TAILLANDIER DE GABORY EMMANUEL (JP)
NAKAMURA SHIGERU (JP)
NAKAMURA SHIGERU (JP)
Application Number:
PCT/JP2016/002132
Publication Date:
October 26, 2017
Filing Date:
April 21, 2016
Export Citation:
Assignee:
NEC CORP (JP)
International Classes:
H01S3/10
Foreign References:
| JP2015167158A | 2015-09-24 | |||
| US8988768B2 | 2015-03-24 | |||
| US20130302035A1 | 2013-11-14 | |||
| JP2014099453A | 2014-05-29 | |||
| JP2013123205A | 2013-06-20 | |||
| JP2014038985A | 2014-02-27 | |||
| JP2004015065A | 2004-01-15 | |||
| US20100129081A1 | 2010-05-27 | |||
| JP2013187663A | 2013-09-19 | |||
| JP2014236210A | 2014-12-15 | |||
| US20150085352A1 | 2015-03-26 |
Other References:
ONO ET AL.: "Study on gain control of MC -EDFA by using hybrid pumping of cladding- and core-direct-pumping schemes", IEICE TECHNICAL REPORT, vol. 144, no. 453, February 2015 (2015-02-01), pages 111 - 115, XP009509574
See also references of EP 3446375A4
See also references of EP 3446375A4
Attorney, Agent or Firm:
SHIMOSAKA, Naoki (JP)
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