Title :
Comparison of effective /spl alpha/ parameters for multiquantum-well electroabsorption modulators
Author :
Suzuki, Nobuo ; Hirayama, Yuzo
Author_Institution :
Mater. & Devices Res. Labs., Toshiba Corp., Kawasaki, Japan
Abstract :
A new effective /spl alpha/ parameter appropriate for evaluating the transmission performance of multiquantum-well electroabsorption (MQW-EA) modulators is proposed. It is defined by the ratio of the phase change to the loss change between the ON voltage and the voltage at which the exciton peak reaches the wavelength of the light source. Simulation reveals that along various effective /spl alpha/ parameters it has the best correlation with the equivalent /spl alpha/ parameter obtained from the transmission performance.<>
Keywords :
electro-optical modulation; electroabsorption; excitons; light sources; optical correlation; semiconductor quantum wells; simulation; ON voltage; effective /spl alpha/ parameters; equivalent /spl alpha/ parameter; exciton peak; light source; loss change; multiquantum-well electroabsorption modulators; phase change; simulation; transmission performance; Absorption; Chirp modulation; Excitons; High speed optical techniques; Optical modulation; Optical pulse shaping; Quantum well devices; Stark effect; Stimulated emission; Voltage;
Journal_Title :
Photonics Technology Letters, IEEE
