Title :
Amplitude Modulators containing an nipi delta doping superlattice
Author :
Areiza, Maria Cristina L ; Tribuzy, Christiana V B ; Landi, Sandra M. ; Pires, Mauricio P. ; Souza, Patricia L.
Author_Institution :
LabSem-Centro de Estudos em Telecomunicacoes, Pontificia Univ. Catolica do Rio de Janeiro, Brazil
Abstract :
Amplitude modulators based on the quantum confined Stark effect, whose active multiple quantum-well region contains an nipi delta doping superlattice were investigated. An enhancement by a factor of two of the Stark shift is observed. This observation was made possible by a thorough doping level calibration procedure. As a result, a larger contrast ratio for the devices based on these novel structures was detected, substantially reducing their operation voltage.
Keywords :
amplitude modulation; calibration; electro-optical modulation; quantum confined Stark effect; semiconductor doping; semiconductor quantum wells; semiconductor superlattices; Stark shift; amplitude modulators; contrast ratio; doping level calibration; multiple quantum-well region; nipi delta doping superlattice; quantum confined Stark effect; Absorption; Amplitude modulation; Chirp modulation; Delta modulation; Doping; Optical modulation; Potential well; Quantum well devices; Superlattices; Voltage; Modulation; quantum confined Stark effect; quantum well; semiconductor superlattices;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2005.854415
