Title :
Low beat-noise polarized tunable fiber ring laser
Author :
Liu, H.L. ; Tam, H.Y. ; Chung, W.H. ; Wai, P.K.A. ; Sugimoto, N.
Author_Institution :
Dept. of Electr. Eng., Hong Kong Polytech. Univ., China
fDate :
3/1/2006 12:00:00 AM
Abstract :
A low beat-noise highly polarized tunable fiber ring laser is proposed and experimentally demonstrated by using a Fabry-Pe´rot laser diode (FP-LD), which acts as a high-pass filter to suppress both the beat noise and TM-polarized light. The wavelength of the fiber ring lasers can be tuned from 1536.82 to 1570.72 nm in 1.12-nm steps and its maximum output power is about +3 dBm. The degree of polarization and extinction ratio of the laser output are about 99% and 60 dB, respectively. The beat-noise with and without the FP-LD was reduced dramatically by 50 dB.
Keywords :
fibre lasers; high-pass filters; laser noise; laser tuning; light polarisation; optical filters; ring lasers; semiconductor lasers; 1536.82 to 1570.72 nm; Fabry-Perot laser diode; TM-polarized light; beat noise; extinction ratio; fiber ring laser; high-pass filter; laser tuning; Diode lasers; Fiber lasers; Filters; Laser noise; Laser tuning; Optical fiber polarization; Power generation; Power lasers; Ring lasers; Tunable circuits and devices; Laser noise; polarization; ring lasers;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2006.871152
