Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/79326
Title: A switchable and stable single-longitudinal-mode, dual-wavelength erbium-doped fiber laser assisted by Rayleigh backscattering in tapered fiber
Authors: Gu, Jian
Yang, Yanfu
Liu, Meng
Zhang, Jianyu
Wang, Xiaorui
Yuan, Yijun
Yao, Yong
Keywords: Fiber Bragg gratings
Linewidths
Stimulated Brillouin scattering
Cavitation
Fiber lasers
Issue Date: 2015
Source: Gu, J., Yang, Y., Liu, M., Zhang, J., Wang, X., Yuan, Y., et al. (2015). A switchable and stable single-longitudinal-mode, dual-wavelength erbium-doped fiber laser assisted by Rayleigh backscattering in tapered fiber. Journal of Applied Physics, 118(10), 103107-.
Series/Report no.: Journal of Applied Physics
Abstract: We have proposed and demonstrated a novel switchable single-longitudinal-mode (SLM), dual-wavelength erbium-doped fiber laser (DWEDFL) assisted by Rayleigh backscattering (RBS) in a tapered fiber in a ring laser configuration. The RBS feedback in a tapered fiber is a key mechanism as linewidth narrowing for laser output. A compound laser cavity ensured that the EDFL operated in the SLM state and a saturable absorber (SA) is employed to form a gain grating for both filtering and improving wavelength stability. The fiber laser can output dual wavelengths simultaneously or operate at single wavelength in a switchable manner. Experiment results show that with the proper SA, the peak power drift was improved from 1–2 dB to 0.31 dB and the optical signal to noise ratio was higher than 60 dB. Under the assistance of RBS feedback, the laser linewidths are compressed by around three times and the Lorentzian 3 dB linewidths of 445 Hz and 425 Hz are obtained at 1550 nm and 1554 nm, respectively.
URI: https://hdl.handle.net/10356/79326
http://hdl.handle.net/10220/38807
DOI: 10.1063/1.4930054
Rights: © 2015 American Institute of Physics (AIP). This paper was published in Journal of Applied Physics and is made available as an electronic reprint (preprint) with permission of American Institute of Physics (AIP). The published version is available at: [http://dx.doi.org/10.1063/1.4930054]. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law.
Fulltext Permission: open
Fulltext Availability: With Fulltext
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