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WEI WEI1, GAOLIN QIN1, YANG WANG1, JUNFA DUAN1,*
A single- and dual-wavelength-tunable ring cavity erbium-doped fiber laser based on an all-fiber Mach–Zehnder comb filter incorporating a multi-mode and polarization-maintaining photonic crystal fiber (PM-PCF) was proposed and experimentally demonstrated. For the proposed fiber laser, the M-Z interferometer comprised a cascaded multi-mode and 0.5 m length PM-PCF fiber, and the interferometer free spectral range was 3.1 nm. In the experiment, the gain medium L-band erbium-doped fiber length was 6 m, the laser threshold was 50 mW, and a 1568.91 nm single-wavelength laser output was generated. When the pump power was 200 mW, the 3 dB linewidth was 0.04 nm. The single wavelength-tunable laser output was realized from 1568.91 nm to 1583.68 nm through adjusting the polarization controller (PC). The wavelength spacing was more than 2.7 nm, the peak power difference was lower than 0.896 dB, and the signal to noise ratio (SNR) was more than 40.05 dB. For the proposed fiber laser, dual-, triple-, and quadruple-wavelength tunable lasers were generated by adjusting the PC, and the SNR was higher than 34.36 dB. The single- and dual-wavelength laser power fluctuations were less than 0.16 dB and 0.174 dB, respectively, with 20 min monitoring time.
Wavelength tunable, Erbium-doped fiber laser, Mach-Zehnder filter, Photonic crystal fiber, Polarization controller.
WEI WEI, GAOLIN QIN, YANG WANG, JUNFA DUAN, Single- and dual-wavelength tunable fiber laser based on a polarization-maintaining photonic crystal fiber Mach-Zehnder filter, Optoelectronics and Advanced Materials - Rapid Communications, 15, 9-10, September-October 2021, pp.403-409 (2021).
Submitted at: July 2, 2021
Accepted at: Oct. 7, 2021
Optoelectronics and Advanced Materials - Rapid Communications
(2023): 0.5 - 2023 Journal Citation Reports (Clarivate Analytics, 2024)
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