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

Volume

17

Issue

10

fYear

2005

Firstpage

2071

Lastpage

2073

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;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2005.854415

Filename

1512276