FMCW light source with a feedback optical phase-locked loop

Yuyao Zeng; Tianxin Yang; Chenyue Zhang; Jiewei Yang; Jiakang Li; Zhaoying Wang; Dongfang Jia; Chunfeng Ge

doi:10.1117/12.3001264

11 March 2024 FMCW light source with a feedback optical phase-locked loop

Yuyao Zeng, Tianxin Yang, Chenyue Zhang, Jiewei Yang, Jiakang Li, Zhaoying Wang, Dongfang Jia, Chunfeng Ge

Author Affiliations +

Proceedings Volume 12885, Terahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications XVII; 1288511 (2024) https://doi.org/10.1117/12.3001264
Event: SPIE OPTO, 2024, San Francisco, California, United States

Conference Poster

Abstract

A scheme of frequency linearly swept light source with a feedback phase-locked loop is proposed and demonstrated, which the stability can be significantly improved. By applying the pre-distortion method, the offset phase lock servo generates a control signal to feedback the loop and adjust the frequency of semiconductor laser source, and the frequency-swept signal can be produced. By adjusting the parameters of the offset phase lock servo, a linearly swept light source is achieved with low-frequency noise and improved robustness. In the experiment, a microwave signals with a sweep excursion of 4 GHz and phase noise of 4.6557*10^-7 rad²/Hz at 1 kHz have been successfully generated.

Citation Download Citation

Yuyao Zeng, Tianxin Yang, Chenyue Zhang, Jiewei Yang, Jiakang Li, Zhaoying Wang, Dongfang Jia, and Chunfeng Ge "FMCW light source with a feedback optical phase-locked loop", Proc. SPIE 12885, Terahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications XVII, 1288511 (11 March 2024); https://doi.org/10.1117/12.3001264

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