Title :
Comb Spectrum Shaping Effect of a Fiber Sagnac Loop on an All-Normal-Dispersion Yb-Doped Mode-Locked Fiber Laser
Author :
Ouyang, Chunmei ; Shum, Ping ; Wang, Honghai ; Fu, Songnian ; Tian, Xiaolong ; Cheng, Xueping ; Wong, Jia Haur ; Lin, Chinlon
Author_Institution :
Network Technol. Res. Centre, Nanyang Technol. Univ., Singapore, Singapore
Abstract :
In this letter, a high birefringence fiber (HBF) Sagnac loop is adopted in an all-normal-dispersion (ANDi) Ytterbium-doped (Yb-doped) passively mode-locked fiber laser. The HBF Sagnac loop acting as a comb spectrum filter has properties of controllable wavelength spacing and tunable transmission wavelength in the laser. With these properties of the HBF Sagnac loop filter, the laser offers a wide range of lasing performance. In the experiment, by changing the HBF length and adjusting the polarization within the loop, obviously different spectral profiles are observed, and broad wavelength tunability is also achieved.
Keywords :
birefringence; comb filters; fibre lasers; laser mode locking; laser tuning; optical fibre dispersion; ytterbium; JkJk:Yb; Yb-doped mode-locked fiber laser; all-normal-dispersion fiber laser; comb spectrum filter; comb spectrum shaping effect; fiber Sagnac loop; high birefringence fiber; wavelength spacing; wavelength tunability; Erbium-doped fiber lasers; Laser mode locking; Optical fiber communication; Optical fiber filters; Optical fiber polarization; Optical fiber sensors; Sagnac interferometers; Comb filter; Sagnac loop filter; high birefringence fiber (HBF); passively mode-locked fiber laser;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2010.2091117
