Mode-locked fiber laser with transverse-mode selection based on a Two-mode FBG

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal

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Original languageEnglish
Article number6848813
Pages (from-to)1766-1769
Journal / PublicationIEEE Photonics Technology Letters
Issue number17
Online published8 Jul 2014
Publication statusPublished - 1 Sep 2014


We demonstrate a passively mode-locked fiber laser that incorporates a two-mode fiber Bragg grating (FBG) for transverse-mode selection. By controlling the polarization state of light in the cavity, the laser can provide a continuous-wave output at the LP01 mode, the LP11 mode, or their mix, which correspond to different reflection wavelengths of the FBG. When the laser is mode-locked, it generates picosecond pulses at a fundamental repetition rate of 6.58 MHz for both the LP01 and LP11 modes with a signal-to-noise ratio higher than 56 dB.At a sufficiently high pump power, the laser can generate irregular multiple-pulse trains and harmonic mode-locked pulses.The laser could find applications in mode-division multiplexed systems. © 2014 IEEE.

Research Area(s)

  • Fiber Bragg grating, mode-division multiplexing, mode-locked laser,two-mode fiber, pulse generation