Title :
A Monolithic MQW InP/InGaAsP-Based Comb Generator
Author :
Renaud, C.C. ; Pantouvaki, M. ; Gregoire, S. ; Lealman, I. ; Cannard, P. ; Gwilliam, R. ; Seeds, A.J.
Author_Institution :
Dept. of Electron. & Electr. Eng., Univ. Coll. London
Abstract :
We report a monolithic optical frequency comb generator using quaternary/quaternary multiple quantum well InP/InGaAsP material as phase modulator and gain medium in a frequency modulated (FM) laser design. The modulation was generated by quantum confined Stark effect to achieve a comb-line spacing of 24.4 GHz. The laser was fabricated using a single epitaxial growth step and quantum well intermixing to realize low loss phase and modulation sections. The resulting comb generator produces lines with a spacing exactly given by the modulation frequency, differential phase noise between adjacent lines of -82 dBc/Hz at 1 kHz offset and a comb spectrum width of up to 2 THz
Keywords :
III-V semiconductors; arsenic compounds; electro-optical modulation; frequency modulation; gallium arsenide; gallium compounds; indium compounds; laser beams; microwave photonics; millimetre wave frequency convertors; optical frequency conversion; optical materials; phase modulation; quantum confined Stark effect; quantum well lasers; submillimetre wave lasers; InP-InGaAsP; comb spectrum width; comb-line spacing; differential phase noise; frequency modulated laser design; gain medium; laser diode; laser fabrication; monolithic optical frequency comb generator; phase modulator; quantum confined Stark effect; quantum well intermixing; quaternary multiple quantum well material; single epitaxial growth step; Frequency modulation; Indium phosphide; Optical design; Optical materials; Optical modulation; Phase modulation; Potential well; Quantum well devices; Quantum well lasers; Stark effect; FM laser; Laser diode; Optical frequency comb generation;
Conference_Titel :
Microwave Photonics, 2006. MWP '06. International Topical Meeting on
Conference_Location :
Grenoble
Print_ISBN :
1-4244-0203-4
Electronic_ISBN :
1-4244-0204-2
DOI :
10.1109/MWP.2006.346511
