All-fiber Mach–Zehnder comb filter based on tapered fibers for wavelength switchable erbium-doped fiber lasers |
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| Authors: | He Wei Zhu Lianqing Dong Mingli |
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| Affiliation: | 1. Key Laboratory of the Ministry of Education for Optoelectronic Measurement Technology and Instrument, Beijing Information Science and Technology University, Beijing, China;2. Beijing Laboratory of Optical Fiber Sensing and System, Beijing Information Science and Technology University, Beijing, China zhulianqing@sina.com;4. Beijing Laboratory of Optical Fiber Sensing and System, Beijing Information Science and Technology University, Beijing, China;5. Key Laboratory of the Ministry of Education for Optoelectronic Measurement Technology and Instrument, Beijing Information Science and Technology University, Beijing, China |
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| Abstract: | Abstract A wavelength switchable erbium-doped fiber laser was constructed based on an all-fiber Mach–Zehnder interferometer (MZI) comb filter. The MZI consisted of a fiber with two tapers. An L-band erbium-doped fiber was used as the gain medium, and 1557.92, 1563.2, and 1568.06?nm single-wavelength and dual-wavelength switchable lasers at 1558, 1563.7, and 1570.2?nm were realized by adjusting the polarization controller. During scanning, the maxmin power fluctuations of single- and dual-wavelength lasing were 0.604 and 2.482?dB, respectively. The signal-to-noise ratio was >24.46?dB and the laser’s 3?dB linewidth was <0.39?nm. |
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| Keywords: | Wavelength switchable lasers erbium-doped fiber fiber taper Mach–Zehnder filter |
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