Abstract
Multiwavelength distributed feedback (DFB) semiconductor laser arrays (MLA) with asymmetric structures are studied in this paper. Thanks to the sampling technique, the asymmetric structures, including asymmetric phase shift and asymmetric coupling coefficient, can be achieved by common holographic exposure. Therefore, the cost of fabrication is remarkably reduced. In addition, due to the large scale of the sampling pattern, the wavelength precision of these kinds of MLA can be simultaneously improved. As an example, we designed and fabricated an asymmetrically phase-shifted MLA with 10 wavelengths for the first time. Compared with the common phase-shifted DFB laser, slope efficiency is significantly improved and single longitudinal mode is still guaranteed. Besides, relatively high wavelength precision is also obtained. The proposed MLA configurations may significantly benefit multiwavelength emitters for future photonic integration.
© 2014 Optical Society of America
Full Article | PDF ArticleMore Like This
Yunshan Zhang, Jilin Zheng, Fangzheng Zhang, Yuechun Shi, Junshou Zheng, Jun Lu, Shengping Liu, Bocang Qiu, and Xiangfei Chen
Opt. Express 23(3) 2889-2894 (2015)
Yuechun Shi, Xiangfei Chen, Yating Zhou, Simin Li, Lianyan Li, and Yijun Feng
Opt. Express 20(16) 17374-17379 (2012)
Renjia Guo, Dikui Mei, Yuegen Bian, Yongbing Zhao, Liangliang Yang, Xiaohua Wang, Ping Wang, Lili Liu, and Jichu Dong
Appl. Opt. 61(32) 9555-9561 (2022)