Title:
OPTICAL TRANSMITTER AND METHOD FOR CONTROLLING OPTICAL CARRIER FREQUENCY
Document Type and Number:
WIPO Patent Application WO/2017/125961
Kind Code:
A1
Abstract:
An optical transmitter using multiplexed optical signals increases in cost and in size in order to control an optical carrier frequency with high precision, therefore, an optical transmitter according to an exemplary aspect of the invention includes optical signal generating means for adding a first optical component to a first optical carrier and adding a second optical component to a second optical carrier; multiplexing means for multiplexing the first optical carrier and the second optical carrier to generate a multiplexed optical signal; monitoring means for monitoring the multiplexed optical signal to detect a monitor signal having a difference frequency between the first optical component and the second optical component; and controlling means for controlling a carrier frequency of at least one of the first optical carrier and the second optical carrier according to the monitor signal.
Inventors:
LE TAILLANDIER DE GABORY EMMANUEL (JP)
Application Number:
PCT/JP2016/000224
Publication Date:
July 27, 2017
Filing Date:
January 18, 2016
Export Citation:
Assignee:
NEC CORP (JP)
International Classes:
H04B10/572
Foreign References:
| US20140140692A1 | 2014-05-22 | |||
| EP2613460A1 | 2013-07-10 |
Other References:
IGARASHI , KOJI ET AL.: "Frequency stabilization of multiple semiconductor lasers for Nyquist-WDM transmission systems", OPTICAL FIBER COMMUNICATION CONFERENCE AND EXPOSITION AND THE NATIONAL FIBER OPTIC ENGINEERS CONFERENCE (OFC/NFOEC, 17 March 2013 (2013-03-17), pages 1 - 3, XP032678978
Attorney, Agent or Firm:
SHIMOSAKA, Naoki (JP)
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