Narrow linewidth parallel hybrid-integrated optical injection locking DFB laser

Zuye Lu; Jie Zeng; Changsheng Wang; Shijian Guan; Yunshan Zhang; Xiangfei Chen

doi:10.1117/12.2537564

19 November 2019 Narrow linewidth parallel hybrid-integrated optical injection locking DFB laser

Zuye Lu, Jie Zeng, Changsheng Wang, Shijian Guan, Yunshan Zhang, Xiangfei Chen

Author Affiliations +

Proceedings Volume 11182, Semiconductor Lasers and Applications IX; 111820N (2019) https://doi.org/10.1117/12.2537564
Event: SPIE/COS Photonics Asia, 2019, Hangzhou, China

Abstract

A parallel hybrid-integrated optical injection locking (PHOIL) DFB laser with narrow linewidth is experimentally demonstrated by using REC technology. The linewidth of the PHOIL DFB laser is significantly narrowed under the injection locking state. The linewidth of the PHOIL DFB laser is measured to be under 100 kHz, compared with 1034.2 kHz under free running state. The narrowest linewidth of the PHOIL DFB laser can be as low as 31.9 kHz. The nonlinear distortions of the PHOIL DFB lasers, including third-order intermodulation distortion (IMD3) and spurious-free dynamic range (SFDR), are also suppressed significantly. The IMD3 is reduced by 4.33 dB and SFDR is also increased from 77.63 dB·Hz^2/3 to 82.71 dB·Hz^2/3.

Citation Download Citation

Zuye Lu, Jie Zeng, Changsheng Wang, Shijian Guan, Yunshan Zhang, and Xiangfei Chen "Narrow linewidth parallel hybrid-integrated optical injection locking DFB laser", Proc. SPIE 11182, Semiconductor Lasers and Applications IX, 111820N (19 November 2019); https://doi.org/10.1117/12.2537564

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