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Optoelectronics Letters

, Volume 15, Issue 2, pp 122–126 | Cite as

A switchable dual-wavelength fiber laser based on phase-shifted fiber Bragg grating combined with Sagnac loop

  • Xiao-li Zhao (赵小丽)
  • Fei Luo (骆飞)
  • Yu-min Zhang (张钰民)
  • Fan-yong Meng (孟凡勇)
  • Ming-li Dong (董明利)Email author
Article
  • 22 Downloads

Abstract

A switchable dual-wavelength erbium-doped fiber (EDF) laser is proposed and demonstrated. The interference filter is achieved by employing a phase-shifted fiber Bragg grating (PSFBG) combined with Sagnac loop structure. By adjusting polarization controller (PC) states, the birefringence effect is introduced to weaken mode competition, then stable and switchable dual-wavelength fiber laser can be realized. Based on coupled-mode theory and transmission matrix, the Sagnac loop transmission characteristics are studied. The experimental results show that the proposed fiber laser can operate in switchable dual-wavelength output mode at room temperature just by simply adjusting PC. The output wavelength range of fiber laser is 1 556.128–1 556.384 nm, the side mode suppression ratio (SMSR) is over 45 dB, and dual-wavelength spacing as small as 0.048 nm is achieved, which can be used in high-fineness dense wavelength division multiplexing (DWDM) systems and similar structures.

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Copyright information

© Tianjin University of Technology and Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  • Xiao-li Zhao (赵小丽)
    • 1
  • Fei Luo (骆飞)
    • 1
  • Yu-min Zhang (张钰民)
    • 1
  • Fan-yong Meng (孟凡勇)
    • 1
  • Ming-li Dong (董明利)
    • 1
    • 2
    Email author
  1. 1.Beijing Engineering Research Center of Optoelectronic Information and InstrumentsBeijing Information Science & Technology UniversityBeijingChina
  2. 2.Beijing Key Laboratory of Optoelectronic Measurement TechnologyBeijing Information Science & Technology UniversityBeijingChina

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