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Stable and uniform multiwavelength erbium-doped fiber laser based on a microfiber knot resonator with a Sagnac loop reflector

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Abstract

In this paper, we proposed and demonstrated a stable and uniform multiwavelength erbium-doped fiber laser (EDFL) by using of the filer action of microfiber knot resonator (MKR) with a Sagnac loop reflector. By embedding the resonator to the ring cavity of the EDFL by means of a circulator, a multiwavelength EDFL is created. The number of the lasing lines with different wavelengths within 3-dB bandwidth is up to 42, the linewidth of each lasing line is about 0.05 nm and the side-mode suppression ratio is about 45 dB. The results demonstrate that the MKR with a Sagnac loop reflector can be employed as a high performance comb filter to realize a stable and uniform multiwavelength fiber laser.

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Acknowledgements

This work was supported in part by the National Natural Science Foundation of China under Grant Nos. 61275149, 61535015 and 61605018, the Hubei Natural Science Foundation of China under Grant No. 2016CFC767, the Doctoral Scientific Research Startup Foundation of Yangtze University under Grant No. 801080010128, and the Open Research Fund of State Key Laboratory of Transient Optics and Photonics under Grant No. SKLST201612.

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Authors and Affiliations

  1. School of Physics and Optoelectronic Engineering, Yangtze University, Jingzhou, 434023, China

    Yiping Xu & Feng Song

  2. State Key Laboratory of Transient Optics and Photonics, Xi’an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi’an, 710119, China

    Liyong Ren, Xudong Kong & Kaili Ren

  3. School of Science, Xi’an Shiyou University, Xi’an, 710065, China

    Chengju Ma

  4. School of Physics, Nankai University, Tianjin, 300071, China

    Feng Song

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  1. Yiping Xu
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Correspondence to Yiping Xu.

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Xu, Y., Ren, L., Ma, C. et al. Stable and uniform multiwavelength erbium-doped fiber laser based on a microfiber knot resonator with a Sagnac loop reflector. J Opt 46, 420–424 (2017). https://doi.org/10.1007/s12596-017-0394-1

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  • DOI: https://doi.org/10.1007/s12596-017-0394-1

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