Title :
Self-photo-induced phase modulation in GaAs/AlGaAs multiple quantum well waveguides
Author :
Thirstrup, C. ; Li Kam Wa, P. ; Pate, M.A. ; Roberts, Jeffrey S. ; Robson, P.N.
Author_Institution :
Dept. of Electron. & Electr. Eng., Sheffield Univ., UK
Abstract :
Reports results of the nonlinear refractive index in GaAs/AlGaAs pin diode multiple quantum well waveguides based on the quantum confined Stark shift of the exciton peaks due to a photon-induced change in the electric field. An increase in the nonlinearity can be obtained by connecting the waveguides to an external bias circuit with little or no speed penalty.
Keywords :
III-V semiconductors; aluminium compounds; gallium arsenide; optical modulation; optical waveguides; optoelectronic devices; p-i-n diodes; phase modulation; quantum optics; semiconductor quantum wells; GaAs-AlGaAs; MQW waveguides; exciton peaks; external bias circuit; multiple quantum well waveguides; nonlinear refractive index; pin diode; quantum confined Stark shift; self photo induced phase modulation; semiconductors;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19891118
