DFB laser array based on four phase-shifted sampled Bragg gratings with precise wavelength control.
Opt Lett
; 47(23): 6237-6240, 2022 Dec 01.
Article
in En
| MEDLINE
| ID: mdl-37219216
ABSTRACT
A four-laser array based on sampled Bragg grating distributed feedback (DFB) lasers in which each sampled period contains four phase-shift sections is proposed, fabricated, and experimentally demonstrated. The wavelength spacing between adjacent lasers is accurately controlled to 0.8â
nm ± 0.026â
nm and the lasers have single mode suppression ratios larger than 50â
dB. Using an integrated semiconductor optical amplifier, the output power can reach 33â
mW and the optical linewidth of the DFB lasers can be as narrow as 64â
kHz. This laser array uses a ridge waveguide with sidewall gratings and needs only one metalorganic vapor-phase epitaxy (MOVPE) step and one III-V material etching process, simplifying the whole device fabrication process, and meeting the requirements of dense wavelength division multiplexing systems.
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Language:
En
Journal:
Opt Lett
Year:
2022
Document type:
Article