Title:
OPTICAL FREQUENCY CONTROLLER, OPTICAL OSCILLATOR, FREQUENCY CONVERTER, AND RADIO WAVE GENERATOR
Document Type and Number:
WIPO Patent Application WO/2021/100101
Kind Code:
A1
Abstract:
An optical frequency controller (1) is provided with: a detector circuit (16) that modulates first light oscillated by a first light source (11) with a local oscillation signal oscillated by a local oscillation signal source (15) and detects a difference beat signal between sideband light of the light after modulation and second light oscillated by a second light source (12); a light source control circuit (21) that divides the difference beat signal detected by the detector circuit (16) with a first number of frequency divisions and divides a reference signal oscillated by a reference signal source (20) with a second number of frequency divisions, and outputs to the second light source (12) a phase error signal that indicates the phase difference between the difference beat signal after division and the reference signal after division to thus change a second frequency included in the second light oscillated by the second light source (12); and a signal processing unit (24) that sets the first number of frequency divisions and the second number of frequency divisions in accordance with a set value of the frequency difference between a first frequency included in the first light and the second frequency included in the second light.
Inventors:
NISHIOKA JUNYA (JP)
AKIYAMA TOMOHIRO (JP)
TAKEMOTO YUTA (JP)
ANDO TOSHIYUKI (JP)
AKIYAMA TOMOHIRO (JP)
TAKEMOTO YUTA (JP)
ANDO TOSHIYUKI (JP)
Application Number:
PCT/JP2019/045159
Publication Date:
May 27, 2021
Filing Date:
November 19, 2019
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
G02F2/02; G02F1/01; H01S3/067
Foreign References:
| US20180048113A1 | 2018-02-15 | |||
| US20160254646A1 | 2016-09-01 | |||
| JP2004077979A | 2004-03-11 | |||
| JP2003195380A | 2003-07-09 | |||
| US20010014106A1 | 2001-08-16 |
Other References:
WEI,F ET AL.: "Precision and broadband frequency swept laser source based on high-order modulation-sideband injection-locking", OPTICS EXPRESS, vol. 23, no. 4, 23 February 2015 (2015-02-23), pages 4970 - 4980, XP055484011, DOI: 10.1364/OE.23.004970
Attorney, Agent or Firm:
TAZAWA, Hideaki et al. (JP)
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