Title :
A QCSE tuned laser with uniform frequency modulation response for use in microwave photonics
Author :
Huang, X. ; Seeds, A.J. ; Roberts, J.S. ; Knights, A.P.
Author_Institution :
Dept. of Electron. & Electr. Eng., Univ. Coll. London, UK
fDate :
29 Sep-2 Oct 1998
Abstract :
Conventional semiconductor lasers tuned by the carrier-induced effect (CIE) suffer from intrinsically non-uniform optical frequency modulation (FM) response due to the associated thermal effect. Electric field effect tuned lasers involving no current injection, offer intrinsically uniform FM response. We report the first post-growth band-gap engineered, quantum-confined Stark effect (QCSE) tuned two-section ridge waveguide laser, having the widest and most uniform frequency modulation bandwidth (30 kHz to 6 GHz ±3 dB) yet reported for field effect tuned lasers. The uniform FM response is independent of laser output power, and residual intensity modulation is less than 5% for 4.5 GHz peak frequency deviation
Keywords :
frequency modulation; intensity modulation; laser tuning; microwave photonics; quantum confined Stark effect; quantum well lasers; 30 kHz to 6 GHz; QCSE tuned laser; carrier-induced effect; electric field effect; field effect tuned lasers; frequency modulation bandwidth; microwave photonics; nonuniform optical frequency modulation; peak frequency deviation; post-growth band-gap engineered laser; quantum-confined Stark effect; residual intensity modulation; semiconductor lasers; thermal effect; tuned two-section ridge waveguide laser; uniform FM response; uniform frequency modulation response; Frequency modulation; Laser tuning; Optical modulation; Optical waveguides; Photonic band gap; Power engineering and energy; Quantum cascade lasers; Semiconductor lasers; Stark effect; Waveguide lasers;
Conference_Titel :
Signals, Systems, and Electronics, 1998. ISSSE 98. 1998 URSI International Symposium on
Conference_Location :
Pisa
Print_ISBN :
0-7803-4900-8
DOI :
10.1109/ISSSE.1998.738103
