Numerical investigation on the frequency-modulated continuous-wave generation based on a semiconductor laser under optical injection from a directly current-modulated semiconductor laser

Li Zhang; Xiao-Dong Lin; Guang-Qiong Xia; Zheng-Mao Wu

doi:10.1117/12.2601293

9 October 2021 Numerical investigation on the frequency-modulated continuous-wave generation based on a semiconductor laser under optical injection from a directly current-modulated semiconductor laser

Li Zhang, Xiao-Dong Lin, Guang-Qiong Xia, Zheng-Mao Wu

Author Affiliations +

Proceedings Volume 11891, Semiconductor Lasers and Applications XI; 118910R (2021) https://doi.org/10.1117/12.2601293
Event: SPIE/COS Photonics Asia, 2021, Nantong, JS, China

Abstract

Based on a master-slave frame, we propose and numerically simulate a scheme for generating frequency-modulated continuous-wave (FMCW) signals with broad bandwidth. In such a master-slave system, a semiconductor laser under current modulation with single-tone electrical signal is taken as the master laser (ML), and its output optical signal with modulated power is injected into another semiconductor laser (taken as the slave laser, SL) for generating FMCW. The simulated results show that, under suitable operating condition, the bandwidth and the sweep rate of generated FMCW signal can reach 15.4 GHz and 4.83 GHz/ns, respectively. Through further introducing optoelectronic feedback into SL for suppressing the phase noise, the contrast of the frequency comb in the FMCW signal can be increased by 20.22 dB.

Conference Presentation

Citation Download Citation

Li Zhang, Xiao-Dong Lin, Guang-Qiong Xia, and Zheng-Mao Wu "Numerical investigation on the frequency-modulated continuous-wave generation based on a semiconductor laser under optical injection from a directly current-modulated semiconductor laser", Proc. SPIE 11891, Semiconductor Lasers and Applications XI, 118910R (9 October 2021); https://doi.org/10.1117/12.2601293

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