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

Source: CHINESE OPTICS LETTERS Volume: 19 Issue: 9 Article Number: 091203 DOI: 10.3788/COL202119.091203 Published: SEP 10 2021

Abstract: A full-open-cavity wavelength-tunable random fiber laser (WT-RFL) with compact structure and hundreds of picometers tuning range is proposed and demonstrated. A pi fiber Bragg grating (FBG) is used in the WT-RFL as a filter to select lasing wavelengths. The two random Bragg grating arrays (RBGAs) and a section of high gain erbium-doped fiber result in a low lasing threshold and high stability. A numerical model to analyze the tunable characteristics is developed. The results show that the laser threshold is 22 mW, and the maximum peak-power fluctuation is 0.55 dB. To the best of our knowledge, it is the first time that a compact and full-open-cavity WT-RFL with two RBGAs and a pi-FBG is proposed.

Accession Number: WOS:000712400800007

ISSN: 1671-7694

Full Text: https://www.researching.cn/articles/OJ6206e765eca67282/html