Fast wavelength-switching DFB laser array with 16 channels based on the REC technology

Kui Liu; Qimin Wang; Kanglong Lin; Tao Fang; Xiangfei Chen

doi:10.1117/12.2573720

10 October 2020 Fast wavelength-switching DFB laser array with 16 channels based on the REC technology

Kui Liu, Qimin Wang, Kanglong Lin, Tao Fang, Xiangfei Chen

Proceedings Volume 11545, Semiconductor Lasers and Applications X; 1154508 (2020) https://doi.org/10.1117/12.2573720
Event: SPIE/COS Photonics Asia, 2020, Online Only

Abstract

Fast tunable lasers with switching time less than one microsecond are key components in high-speed optical switching networks. In this paper, we propose an effective method to achieve high wavelength switching speed by turning on/off individual lasers of a matrix-grating DFB laser array. The laser array consists of 16 DFB lasers, which are arranged as a 4-by-4 matrix. Besides, the REC technique is used to simplify the fabrication of the grating and precisely control the grating phase. 16 channels with 2.4-nm-spacing are obtained and the SMSRs of all the 16 channels are above 40 dB, indicating good single mode operation. A high-speed driving circuit is designed to supply stable direct current for the DFB laser array and to control the switching process. The experimental result shows that the switching time between 2 channels is less than 100 nanoseconds.

Conference Presentation

Citation Download Citation

Kui Liu, Qimin Wang, Kanglong Lin, Tao Fang, and Xiangfei Chen "Fast wavelength-switching DFB laser array with 16 channels based on the REC technology", Proc. SPIE 11545, Semiconductor Lasers and Applications X, 1154508 (10 October 2020); https://doi.org/10.1117/12.2573720

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