Title :
Tail-free operation of an overdriven gain-switched DFB laser by spectral filtering
Author :
Dubov, M.V. ; Giannone, D. ; Khrushchev, I.Y. ; Bennion, I.
Author_Institution :
Dept. of Electron. Eng., Aston Univ., Birmingham, UK
Abstract :
We demonstrate for the first time that the unwanted relaxation oscillations in the overdriven DFB laser output can be suppressed by using a steep-edge notch filter. The filtering is realised using a mechanically tunable fibre Bragg grating (FBG) and is achieved without significant loss of the useful pulsed signal. In the experiment, several quantum-well DFB laser diodes from different manufacturers have been used
Keywords :
Bragg gratings; Q-switching; distributed feedback lasers; laser tuning; notch filters; optical filters; quantum well lasers; mechanically tunable fibre Bragg grating; overdriven DFB laser output; overdriven gain-switched DFB laser; pulsed signal; quantum-well DFB laser diodes; spectral filtering; steep-edge notch filter; tail-free operation; unwanted relaxation oscillations; Bragg gratings; Diode lasers; Fiber gratings; Filtering; Laser tuning; Optical attenuators; Optical filters; Optical pulses; Power lasers; Tail;
Conference_Titel :
Lasers and Electro-Optics Society, 2001. LEOS 2001. The 14th Annual Meeting of the IEEE
Conference_Location :
San Diego, CA
Print_ISBN :
0-7803-7105-4
DOI :
10.1109/LEOS.2001.969059
