A Directly Modulated Laterally Coupled Distributed Feedback Laser Array Based on SiO2 Planarization Process
- Resource Type
- article
- Authors
- Qichao Wang; Jian Wang; Changzheng Sun; Bing Xiong; Yi Luo; Zhibiao Hao; Yanjun Han; Lai Wang; Hongtao Li; Jiadong Yu
- Source
- Applied Sciences, Vol 11, Iss 1, p 221 (2020)
- Subject
- laterally coupled gratings
high-speed modulation
SiO2 Planarization
1.3 μm
distributed feedback laser
Technology
Engineering (General). Civil engineering (General)
TA1-2040
Biology (General)
QH301-705.5
Physics
QC1-999
Chemistry
QD1-999
- Language
- English
- ISSN
- 2076-3417
Low-cost and high-speed single-mode semiconductor lasers are increasingly required as wide-band access fiber communication expands in recent years. Here, a high-speed laterally coupled distributed feedback (LC-DFB) laser array is achieved based on a SiO2 planarization process. The device exhibits low threshold currents of about 12 mA and high slope efficiencies over 0.26 W/A. Stable single mode operation and high-speed performance are realized with side mode suppression ratios (SMSR) over 45 dB, and 3-dBe bandwidths exceed 14 GHz for all four channels. Such a high-speed and process simple LC-DFB laser array shows great potential to the low-cost fiber communication networks.