A Directly Modulated Laterally Coupled Distributed Feedback Laser Array Based on SiO<sub>2</sub> Planarization Process

Qichao Wang; Jian Wang; Changzheng Sun; Bing Xiong; Yi Luo; Zhibiao Hao; Yanjun Han; Lai Wang; Hongtao Li; Jiadong Yu

doi:10.3390/app11010221

Applied Sciences (Dec 2020)

A Directly Modulated Laterally Coupled Distributed Feedback Laser Array Based on SiO<sub>2</sub> Planarization Process

Qichao Wang,
Jian Wang,
Changzheng Sun,
Bing Xiong,
Yi Luo,
Zhibiao Hao,
Yanjun Han,
Lai Wang,
Hongtao Li,
Jiadong Yu

Affiliations

Qichao Wang: Beijing National Research Centre for Information Science and Technology, Department of Electronic Engineering, Tsinghua University, Beijing 100084, China
Jian Wang: Beijing National Research Centre for Information Science and Technology, Department of Electronic Engineering, Tsinghua University, Beijing 100084, China
Changzheng Sun: Beijing National Research Centre for Information Science and Technology, Department of Electronic Engineering, Tsinghua University, Beijing 100084, China
Bing Xiong: Beijing National Research Centre for Information Science and Technology, Department of Electronic Engineering, Tsinghua University, Beijing 100084, China
Yi Luo: Beijing National Research Centre for Information Science and Technology, Department of Electronic Engineering, Tsinghua University, Beijing 100084, China
Zhibiao Hao: Beijing National Research Centre for Information Science and Technology, Department of Electronic Engineering, Tsinghua University, Beijing 100084, China
Yanjun Han: Beijing National Research Centre for Information Science and Technology, Department of Electronic Engineering, Tsinghua University, Beijing 100084, China
Lai Wang: Beijing National Research Centre for Information Science and Technology, Department of Electronic Engineering, Tsinghua University, Beijing 100084, China
Hongtao Li: Beijing National Research Centre for Information Science and Technology, Department of Electronic Engineering, Tsinghua University, Beijing 100084, China
Jiadong Yu: Beijing National Research Centre for Information Science and Technology, Department of Electronic Engineering, Tsinghua University, Beijing 100084, China

DOI: https://doi.org/10.3390/app11010221
Journal volume & issue: Vol. 11, no. 1
p. 221

Abstract

Read online

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.

Published in Applied Sciences

ISSN: 2076-3417 (Online)
Publisher: MDPI AG
Country of publisher: Switzerland
LCC subjects: Technology: Engineering (General). Civil engineering (General); Science: Biology (General); Science: Physics; Science: Chemistry
Website: http://www.mdpi.com/journal/applsci

About the journal

Abstract

Keywords