Open AccessExperimental demonstration of DFB semiconductor lasers with varying longitudinal parameters
Author(s) -
Simin Li,
Ruixiang Guo,
Lianyan Li,
Yuechun Shi,
Jun Lu,
Linlin Lu,
Jun Zheng,
Xiangfei Chen
Publication year - 2014
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.22.004059
Subject(s) - optics , materials science , semiconductor laser theory , longitudinal mode , laser , grating , coupling coefficient of resonators , coupling (piping) , holography , photolithography , optoelectronics , fiber bragg grating , semiconductor , resonator , physics , metallurgy
The distributed-coupling-coefficient and distributed-coupling-coefficient corrugation-pitch-modulated DFB lasers are experimentally demonstrated. The proposed lasers maintain good side mode suppression ratio over 50dBfrom 2.5 times to 12.5 times threshold current. The grating profiles of varying longitudinal parameters are equivalently obtained by specially designed sampled Bragg gratings and fabricated by conventional holographic exposure and μm-level photolithography.