Title :
Pulse stabilisation in harmonically FM modelocked erbium fibre ring laser with DFBLD
Author :
Kim, Y.J. ; Song, H.S. ; Kim, D.Y.
Author_Institution :
Dept. of Inf. & Commun., Gwangju Inst. of Sci. & Technol., South Korea
fDate :
7/21/2005 12:00:00 AM
Abstract :
A new pulse stabilisation scheme for a harmonically frequency modulated (FM) modelocked erbium fibre ring laser using a distributed feedback laser diode (DFBLD) is presented. More than 65 dB supermode noise suppression in the RF spectrum was obtained with the proposed method. Effective reduction of supermode noise can be accomplished as the DFBLD in the fibre laser acts not only as a fast-gain saturated medium but also as an optical bandpass filter for suppressing supermode noise in a harmonically modelocked laser system.
Keywords :
band-pass filters; distributed feedback lasers; erbium; fibre lasers; frequency modulation; laser mode locking; laser stability; optical filters; optical modulation; ring lasers; semiconductor lasers; RF spectrum; distributed feedback laser diode; fiber laser; harmonically FM modelocked erbium fibre ring laser; harmonically modelocked laser system; optical bandpass filter; pulse stabilisation; supermode noise suppression;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20051450
