We demonstrated a stable single-frequency, single-polarization operation of ytterbium-doped fiber laser. As a novel practical method to realize single-polarization operation of fiber distributed Bragg reflector (DBR) laser, we proposed self-injection locking (SIL) with an active fiber ring feedback cavity. The laser has high output power exceeding 15 mW, wavelength of 1053.20 nm, and side-mode suppression ratio greater than 60 dB. The SIL fiber laser shows the improvements in output power and side-mode suppression compared with the fiber DBR laser. No mode-hopping is observed within 2 hours.
© 2005 Chinese Optics Letters
(140.3510) Lasers and laser optics : Lasers, fiber
(140.3520) Lasers and laser optics : Lasers, injection-locked
(140.3570) Lasers and laser optics : Lasers, single-mode
(260.5430) Physical optics : Polarization
Anting Wang, Hai Ming, Feng Li, Lixin Xu, Liang Lv, Huaqiao Gui, Jing Huang, and Jianping Xie, "Single-frequency, single-polarization ytterbium-doped fiber laser by self-injection locking," Chin. Opt. Lett. 2, 223-225 (2004)