An 1.96 kHz linewidth semiconductor laser with external dual-cavity self-injection structure of the adjustable time-delay fiber

Dachang Liu; Shaohua Wu; Yinliang Xie

doi:10.1117/12.2585268

4 December 2020 An 1.96 kHz linewidth semiconductor laser with external dual-cavity self-injection structure of the adjustable time-delay fiber

Dachang Liu, Shaohua Wu, Yinliang Xie

Author Affiliations +

Proceedings Volume 11617, International Conference on Optoelectronic and Microelectronic Technology and Application; 1161727 (2020) https://doi.org/10.1117/12.2585268
Event: International Conference on Optoelectronic and Microelectronic Technology and Application, 2020, Nanjing, China

Abstract

In this paper, firstly, the principle, advantages and disadvantages of measurement of laser linewidth by delayed self-heterodyne method is introduced，and the essence of the method is analyzed theoretically. The core components of the measurement system are introduced in detail.Secondly, the self-developed scheme of semiconductor laser with external dual- cavity self-injection structure of the adjustable time-delay fiber is proposed. The linewidth results of lasers with different lengths of time-delay fiber are tested for the single-mode optical fiber system. The power variation of different structures is analyzed. Finally, A narrow-linewidth semiconductor laser with a mean power of 4 mW, a mean linewidth of 1.96 kHz and the side mode suppression ratio is more than 35 dBm is obtained.

Citation Download Citation

Dachang Liu, Shaohua Wu, and Yinliang Xie "An 1.96 kHz linewidth semiconductor laser with external dual-cavity self-injection structure of the adjustable time-delay fiber", Proc. SPIE 11617, International Conference on Optoelectronic and Microelectronic Technology and Application, 1161727 (4 December 2020); https://doi.org/10.1117/12.2585268

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