Title :
Narrow Linewidth Bismuth-Doped All-Fiber Ring Laser
Author :
Kelleher, E.J.R. ; Travers, J.C. ; Golant, K.M. ; Popov, S.V. ; Taylor, J.R.
Author_Institution :
Dept. of Phys., Imperial Coll. London, London, UK
fDate :
6/1/2010 12:00:00 AM
Abstract :
We report a novel narrow linewidth Bismuth-doped all-fiber ring laser, operating at 1177 nm. We achieve a 10-mW output in a 4-GHz linewidth, direct from the oscillator under 7 W of pumping, delivered by an Yb-fiber laser. Mode suppression in the 50-m unidirectional ring cavity is provided by a narrowband fiber Bragg grating and two fiber integrated Fabry-Perot (FP) filters. The FP filters provide a factor of 20 mode suppression, while improving the relative intensity noise by up to 20 dB/Hz. The optical signal-to-noise ratio (OSNR) is ~60 dB.
Keywords :
Bragg gratings; fibre lasers; integrated optics; laser cavity resonators; laser noise; optical filters; optical pumping; ring lasers; fiber integrated Fabry-Perot filters; intensity noise; mode suppression; narrow linewidth bismuth-doped all-fiber ring laser; narrowband fiber Bragg grating; optical signal-to-noise ratio; oscillator; power 10 mW; power 7 W; pumping; unidirectional ring cavity; wavelength 1177 nm; Bismuth; fiber laser; narrow linewidth; ring laser;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2010.2046029
