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Optica Publishing Group
  • Chinese Optics Letters
  • Vol. 17,
  • Issue 1,
  • pp. 010604-
  • (2019)

Switchable multi-wavelength erbium-doped fiber laser based on a four-mode FBG

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Abstract

We propose a switchable multi-wavelength erbium-doped fiber laser based on a four-mode fiber Bragg grating (FBG). The four-mode FBG is fabricated in a hydrogen pre-loaded fiber by the phase mask method, which can support four linearly polarized modes around 1550 nm. The five operation wavelengths are at 1547.5, 1546.8, 1546.0, 1545.1, and 1544.2 nm, respectively. Through adjusting the polarization state and the lateral offset coupling in cavity, the laser can be switched into the operation state of single, dual, or triple wavelengths. The proposed laser has the advantages of simple configuration, stable operation, and easy adjustment.

© 2018 Chinese Laser Press

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