Title :
High-efficiency, single-longitudinal-mode ring fibre laser
Author :
Liégeois, F. ; Hernandez, Y. ; Peigné, G. ; Roy, F. ; Hamoir, D.
Author_Institution :
Multitel ASBL, Mons, Belgium
fDate :
6/23/2005 12:00:00 AM
Abstract :
A novel single-longitudinal-mode erbium-doped ring fibre laser is proposed and demonstrated experimentally. It combines a narrow-linewidth fibre Bragg grating (FBG) with several Mach-Zehnder mode filters (MZF) to obtain a single-frequency emission. It yields a power conversion efficiency of 16%. It is shown that the sidemodes are suppressed when one inserts the series of MZFs inside the cavity. At 1547 nm, the output power measures over 15 dBm, with a sidemode suppression ratio of 50 dB and a linewidth of no more than 7 kHz.
Keywords :
Bragg gratings; erbium; fibre lasers; optical filters; ring lasers; 1547 nm; Mach-Zehnder mode filters; erbium-doped ring fibre laser; fibre laser cavity; high-efficiency ring fibre laser; narrow-linewidth fibre Bragg grating; power conversion efficiency; sidemode suppression ratio; single-frequency emission; single-longitudinal-mode ring fibre laser;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20050496
