Title :
Dual-Wavelength Single-Longitudinal-Mode Tm-Doped Fiber Laser Using PM-CMFBG
Author :
Fengping Yan ; Wanjing Peng ; Shuo Liu ; Ting Feng ; Ze Dong ; Gee-Kung Chang
Author_Institution :
Key Lab. of All Opt. Network & Adv. Telecommun. of Electromagn. Compatibility, Beijing Jiaotong Univ., Beijing, China
Abstract :
We have demonstrated a dual-wavelength thulium-doped fiber laser with single-longitudinal-mode (SLM) operation at ~2-μm region. A polarization-maintaining chirped Moiré fiber Bragg grating was employed as a polarization-dependent narrow-band filter, to suppress multilongitudinal-mode oscillation. Single-and dual-wavelength switchable operation was achieved by simply adjusting the polarization controller. We also showed that the laser lines retained SLM operation with the additional benefit of single polarization. Meanwhile, the dependence of each laser wavelength on the pump power was also investigated in detail.
Keywords :
Bragg gratings; chirp modulation; fibre lasers; laser beams; laser modes; optical fibre polarisation; optical filters; optical pumping; optical variables control; spatial light modulators; thulium; PM-CMFBG; SLM operation; dual-wavelength single-longitudinal-mode Tm-doped fiber laser; dual-wavelength switchable operation; laser lines; laser wavelength; multilongitudinal-mode oscillation; polarization controller; polarization-dependent narrow-band filter; polarization-maintaining chirped Moiré fiber Bragg grating; pump power; single polarization; single-longitudinal-mode operation; single-wavelength switchable operation; wavelength 2 mum; Fiber lasers; Gas lasers; Laser excitation; Optical fiber dispersion; Optical fiber polarization; Pump lasers; Fiber gratings; dual-wavelength; fiber lasers; single-longitudinal-mode;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2015.2403842
