Open AccessStudy on DFB semiconductor laser array integrated with grating reflector based on reconstruction-equivalent-chirp technique
Author(s) -
Yunshan Zhang,
Jilin Zheng,
Fangzheng Zhang,
Yuechun Shi,
Jun Zheng,
Jun Lu,
Shengping Liu,
Bocang Qiu,
Xiangfei Chen
Publication year - 2015
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.23.002889
Subject(s) - optics , grating , chirp , materials science , laser , reflector (photography) , semiconductor laser theory , distributed feedback laser , wavelength , semiconductor , diffraction grating , optoelectronics , physics , light source
A 4-channel distributed feedback (DFB) semiconductor laser array with incorporation of a grating reflector utilizing reconstruction-equivalent-chirp technique is theoretically studied and experimentally demonstrated. By integrating with a grating reflector, 40% increase of slope efficiency, about 10mA decrease of threshold current and 7dB increase of side mode suppression ratio (SMSR) are achieved with a deviation of wavelength spacing being less than 0.07nm. The SMSRs of all the lasers are higher than 60dB.