Title :
Small-signal modulation of a two-section semiconductor laser amplifier: Pure PM response
Author_Institution :
Dept. of Microwave Eng., R. Inst. of Technol., Stockholm, Sweden
fDate :
5/1/1991 12:00:00 AM
Abstract :
A description is given of how a near-traveling-wave two-section semiconductor laser amplifier used as an external modulator can accomplish phase modulation (PM) without any accompanying amplitude modulation (AM). The analysis, performed by numerical small-signal simulation, shows that it is possible to obtain pure PM by adjustment of the ratio of the modulation currents of the two sections. An AM-suppressed PM response of 0.4 pi rad/mA with a 3-dB modulation bandwidth, of 1 GHz can be obtained.<>
Keywords :
laser theory; optical modulation; phase modulation; semiconductor junction lasers; 1 GHz; AM-suppressed PM response; Pure PM response; external modulator; modulation bandwidth; modulation currents; near-traveling-wave; numerical small-signal simulation; optical modulation; phase modulation; small-signal modulation; two-section semiconductor laser amplifier; Electrons; Equations; Laser modes; Optical amplifiers; Optical pumping; Power amplifiers; Pump lasers; Semiconductor lasers; Semiconductor optical amplifiers; Stimulated emission;
Journal_Title :
Photonics Technology Letters, IEEE
