Title:
WAVELENGTH-VARIABLE LIGHT SOURCE
Document Type and Number:
WIPO Patent Application WO/2023/233581
Kind Code:
A1
Abstract:
Provided is a highly accurately controllable wavelength-variable light source. A wavelength-variable light source (200, 600) according to an embodiment comprises: a wavelength-variable laser (210); a demultiplexer (250, 650) which demultiplexes light output from the wavelength-variable laser into N portions, where N is an integer of 2 or more; N light-reception elements (260) that each convert the N demultiplexed portions of light into an electric signal indicative of the intensity of the corresponding light; a processing unit (270) which performs a predetermined computation on the electric signals from the N light-reception elements; and a control unit (280) which generates, in accordance with the result of the computation, a control signal for changing the drive state of the wavelength-variable laser.
Inventors:
SAITO YUSUKE (JP)
UEDA YUTA (JP)
UEDA YUTA (JP)
Application Number:
PCT/JP2022/022309
Publication Date:
December 07, 2023
Filing Date:
June 01, 2022
Export Citation:
Assignee:
NIPPON TELEGRAPH & TELEPHONE (JP)
International Classes:
H01S3/10
Foreign References:
| JP2008122096A | 2008-05-29 | |||
| JP2008177470A | 2008-07-31 | |||
| US20030173505A1 | 2003-09-18 |
Attorney, Agent or Firm:
TANI & ABE, P.C. (JP)
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