Open AccessTunable, multiwavelength Tm-doped fiber laser based on polarization rotation and four-wave-mixing effect
Author(s) -
Wei Xiong,
Yulong Zhu,
Pu Zhang,
Xiaolin Wang,
Xiao Hu,
Si Liu
Publication year - 2013
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.21.025977
Subject(s) - optics , fiber laser , materials science , wavelength , polarization maintaining optical fiber , polarization (electrochemistry) , laser , dispersion shifted fiber , optical fiber , optoelectronics , fiber optic sensor , physics , chemistry
We propose and demonstrate a tunable multiwavelength fiber laser employing polarization-maintaining Tm-doped fiber based on polarization rotation and four-wave-mixing effect. Polarization-maintaining Tm-doped fiber and polarization controllers were employed to manipulate the polarization modes in the laser, and 400 m long single-mode passive fiber was used to enhance the four-wave-mixing effect and suppress the polarization mode competition. Stable fiber laser operation of 1-6 wavelengths around 1.9 μm was achieved at room temperatures. The wavelengths can be tuned through adjusting the polarization controllers. The optical signal-to-noise ratio of the laser is more than 31 dB. The wavelength shift is less than 0.05 nm and the peak fluctuation of each wavelength is analyzed. For most of the wavelengths the peak fluctuations are less than 3 dB and the peak fluctuations of wavelengths with more stability are below 1.5 dB.