Wavelength-switchable single-longitudinal-mode thulium-doped fiber laser with sampled fiber Bragg grating

Wenguo Han, Fengping Yan, Ting Feng, Luna Zhang, Biao Guan, Qi Qin, Ying Guo, Ting Li, Hong Zhou, Yuping Suo
2021 IEEE Access  
A wavelength-switchable single-longitudinal-mode thulium-doped fiber laser using a sampled fiber Bragg grating is proposed in this study. The laser can be switched between three single-wavelength and three dual-wavelength modes of operation. For the single-wavelength mode of operation, the maximum power and wavelength fluctuations in 50 min were ±0.404 dB and ±0.01 nm, and the linewidths at three wavelengths were 0.39, 1.88, and 0.89 kHz, respectively. For the dual-wavelength mode of operation,
more » ... the maximum power and wavelength fluctuations in 20 min were ±0.926 dB and ±0.03 nm, respectively. The proposed thulium-doped fiber laser will find useful application in optical communication and free-space optical detection and sensing. INDEX TERMS thulium-doped fiber laser, wavelength-switchable, narrow linewidth, sampled fiber Bragg grating.
doi:10.1109/access.2021.3072403 fatcat:f6go6hbjyvekrfell4skjsz4am