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Tunable filter based on a pair of special long-period fiber gratings and its application in fiber ring laser

  • Fiber Optics
  • Published:
Laser Physics

Abstract

A filter based on a Mach-Zehnder interferometer (MZI) formed by cascading a pair of longperiod fiber gratings (LPFGs) written by CO2 laser in a twisted single-mode fiber is proposed. The transmission spectrum of the filter is tuned by modifying the bending curvature of the MZI, and thus wavelength tuning is achieved. And a tunable erbium-doped fiber (EDF) ring laser employing the filter as a wavelengthselection component is experimentally demonstrated. The laser can be tuned continuously from 1573.05 to 1595.75 nm with a side-mode suppression ration of ∼50 dB over the total tuning range.

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Authors and Affiliations

  1. Key Lab of Optoelectronic Technology and System (Education Ministry of China), Chongqing University, Chongqing, 400044, China

    L. L. Shi, T. Zhu, F. Y. Chen, M. Deng & W. Huang

Authors
  1. L. L. Shi
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  2. T. Zhu
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  3. F. Y. Chen
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  4. M. Deng
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  5. W. Huang
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Correspondence to L. L. Shi.

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Original Text © Astro, Ltd., 2012.

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Shi, L.L., Zhu, T., Chen, F.Y. et al. Tunable filter based on a pair of special long-period fiber gratings and its application in fiber ring laser. Laser Phys. 22, 575–578 (2012). https://doi.org/10.1134/S1054660X1203019X

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  • DOI: https://doi.org/10.1134/S1054660X1203019X

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