Title:
WAVELENGTH-VARIABLE LASER, WAVELENGTH-VARIABLE LASER MODULE, AND METHOD FOR PRODUCING LAYERED STRUCTURE OF WAVELENGTH-VARIABLE LASER
Document Type and Number:
WIPO Patent Application WO/2023/248412
Kind Code:
A1
Abstract:
This wavelength-variable laser (10) comprises, in this order, a substrate (101), a waveguide layer, and cladding (104). Said laser further comprises: an active layer (103) disposed in a section of the waveguide layer; a wavelength selection filter (105) disposed in at least one end region of the waveguide layer; and a barrier region (106) disposed between a cladding layer and at least a section of the waveguide layer not including the active layer. Due to this configuration, the present invention can provide a wavelength-variable laser that easily suppresses a decrease in light output.
Inventors:
UEDA YUTA (JP)
SHINDO TAKAHIKO (JP)
SHIMOKOZONO MAKOTO (JP)
SHINDO TAKAHIKO (JP)
SHIMOKOZONO MAKOTO (JP)
Application Number:
PCT/JP2022/025048
Publication Date:
December 28, 2023
Filing Date:
June 23, 2022
Export Citation:
Assignee:
NIPPON TELEGRAPH & TELEPHONE (JP)
International Classes:
H01S5/125; H01S5/026; H01S5/042; H01S5/343; H01S5/50
Foreign References:
| JP2018011023A | 2018-01-18 | |||
| JPS6323382A | 1988-01-30 | |||
| JPH08340153A | 1996-12-24 | |||
| JP2018067604A | 2018-04-26 | |||
| JP2011053171A | 2011-03-17 | |||
| JP2006261424A | 2006-09-28 | |||
| US20180183207A1 | 2018-06-28 |
Attorney, Agent or Firm:
YAMAKAWA, Shigeki et al. (JP)
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