Author(s): Lv, B (Lv, Bing); Zhang, WT (Zhang, Wentao); Huang, WZ (Huang, Wenzhu); Li, F (Li, Fang)

Source: JOURNAL OF LIGHTWAVE TECHNOLOGY Volume: 40 Issue: 15 Pages: 5286-5293 DOI: 10.1109/JLT.2022.3173440 Published: AUG 1 2022

Abstract: A low frequency-noise ring random fiber laser (RFL) based on random Bragg grating array (RBGA) feedback is proposed. A dual-cavity fiber Bragg grating Fabry-Perot (FBG-FP) filter, which matches the wavelength of RBGA, is specially designed. Due to the narrower bandwidth, flatter response and steeper rolloff, the dual-cavity FBG-FP filter can significantly suppress the competition-induced frequency jitter and undesired residual random lasing modes, and contribute to establish stable lasing and further reduce frequency noise of RFL. The frequency noise of the proposed RFL is similar to 3 Hz/root Hz above 1 kHz, and the frequency jitter is similar to 3.11 x 10(-11) over 10 s. The 3-dB linewidth is similar to 490 Hz with a similar to 40 dB of optical signal-to-noise ratio.

Accession Number: WOS:000831172200041

ISSN: 0733-8724

eISSN: 1558-2213

Full Text: https://ieeexplore.ieee.org/document/9772380