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Volume 11
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10.3390/app11010221
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Article

A Directly Modulated Laterally Coupled Distributed Feedback Laser Array Based on SiO2 Planarization Process

by
Qichao Wang
1,
Jian Wang
1,2,*,
Changzheng Sun
1,2,
Bing Xiong
1,2,
Yi Luo
1,2,3,*,
Zhibiao Hao
1,2,
Yanjun Han
1,2,3,
Lai Wang
1,
Hongtao Li
1 and
Jiadong Yu
1,2,3
1
Beijing National Research Centre for Information Science and Technology, Department of Electronic Engineering, Tsinghua University, Beijing 100084, China
2
Center for Flexible Electronics Technology, Tsinghua University, Beijing 100084, China
3
Flexible Intelligent Optoelectronic Device and Technology Center, Institute of Flexible Electronics Technology of THU, Jiaxing 314006, China
*
Authors to whom correspondence should be addressed.
Appl. Sci. 2021, 11(1), 221; https://doi.org/10.3390/app11010221
Submission received: 8 December 2020 / Revised: 19 December 2020 / Accepted: 25 December 2020 / Published: 29 December 2020
(This article belongs to the Special Issue Novel and Highly Efficient Semiconductor-Based Light Sources)
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Abstract

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.
Keywords: laterally coupled gratings; high-speed modulation; SiO2 Planarization; 1.3 μm; distributed feedback laser laterally coupled gratings; high-speed modulation; SiO2 Planarization; 1.3 μm; distributed feedback laser

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MDPI and ACS Style

Wang, Q.; Wang, J.; Sun, C.; Xiong, B.; Luo, Y.; Hao, Z.; Han, Y.; Wang, L.; Li, H.; Yu, J. A Directly Modulated Laterally Coupled Distributed Feedback Laser Array Based on SiO2 Planarization Process. Appl. Sci. 2021, 11, 221. https://doi.org/10.3390/app11010221

AMA Style

Wang Q, Wang J, Sun C, Xiong B, Luo Y, Hao Z, Han Y, Wang L, Li H, Yu J. A Directly Modulated Laterally Coupled Distributed Feedback Laser Array Based on SiO2 Planarization Process. Applied Sciences. 2021; 11(1):221. https://doi.org/10.3390/app11010221

Chicago/Turabian Style

Wang, Qichao, Jian Wang, Changzheng Sun, Bing Xiong, Yi Luo, Zhibiao Hao, Yanjun Han, Lai Wang, Hongtao Li, and Jiadong Yu. 2021. "A Directly Modulated Laterally Coupled Distributed Feedback Laser Array Based on SiO2 Planarization Process" Applied Sciences 11, no. 1: 221. https://doi.org/10.3390/app11010221

APA Style

Wang, Q., Wang, J., Sun, C., Xiong, B., Luo, Y., Hao, Z., Han, Y., Wang, L., Li, H., & Yu, J. (2021). A Directly Modulated Laterally Coupled Distributed Feedback Laser Array Based on SiO2 Planarization Process. Applied Sciences, 11(1), 221. https://doi.org/10.3390/app11010221

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