期刊
OPTICS EXPRESS
卷 29, 期 20, 页码 31179-31200出版社
Optica Publishing Group
DOI: 10.1364/OE.439732
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类别
资金
- National Natural Science Foundation of China [61975049, 61775128, 61827818, 12004092]
- Science Fund for Distinguished Young Scholars of Hebei Province [F2020201001]
The research presents a high-performance wavelength-switchable erbium-doped fiber laser with multiple laser wavelength options. By combining different filters and a polarization management system, stable laser operations with various wavelengths were achieved.
We propose and demonstrate a high-performance wavelength-switchable erbium-doped fiber laser (EDFL), enabled by a figure-8 compound-ring-cavity (F8-CRC) filter for single-longitudinal-mode (SLM) selection and a polarization-managed four-channel filter (PM-FCF) for defining four lasing wavelengths. We introduce a novel methodology utilizing signal-flow graph combined with Mason's rule to analyze a CRC filter in general and apply it to obtain the important design parameters for the F8-CRC used in this paper. By combining the functions of the F8-CRC filter and the PM-FCF assisted by the enhanced polarization hole-burning and polarization dependent loss, we achieve the EDFL with fifteen lasing states, including four single-, six dual-, four tri- and one quad-wavelength lasing operations. In particular, all the four single-wavelength operations are in stable SLM oscillation, typically with a linewidth of <600 Hz, a RIN of <=-154.58 dB/Hz @ >= 3 MHz and an output power fluctuation of <= +/- 3.45%. In addition, all the six dual-wavelength operations have very similar performances, with the performance parameters close to those of the four single-wavelength operations, superior to our previous work and others' similar work significantly. Finally, we achieve the wavelength-spacing tuning of dual-wavelength operations for photonic generation of tunable microwave signals, and successfully obtain a signal at 23.10 GHz as a demonstration. (C) 2021 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
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