Title :
Very low power nonlinear directional coupling in a p-i (MQW)-n vertical coupler using an electrooptic feedback
Author :
Cavaillès, J.A. ; Erman, M.
Author_Institution :
Lab. d´´Electron. Philips, Limeil-Brevannes, France
fDate :
5/1/1990 12:00:00 AM
Abstract :
An optically controlled 1*2 optical switch based on a vertically arranged directional coupler in which the guiding regions are GaAs/GaAlAs multiple quantum wells is discussed. The device can be switched electrically in a very efficient way (5-V driving voltage for a 330- mu m-long sample) as well as optically. When connected to a constant-current source, the system shows high optical nonlinearities and can be all-optically switched with very low incident optical power on the order of 0.1 mW.<>
Keywords :
directional couplers; electro-optical devices; nonlinear optics; optical couplers; optical switches; p-i-n diodes; semiconductor quantum wells; 0.1 mW; 1*2 optical switch; 330 micron; 5 V; GaAs-GaAlAs; constant-current source; driving voltage; electrooptic feedback; guiding regions; low power nonlinear directional coupling; multiple quantum wells; optical nonlinearities; optically controlled; p-i-n vertical couplers; switched electrically; vertically arranged directional coupler; Couplings; Directional couplers; Gallium arsenide; Nonlinear optical devices; Nonlinear optics; Optical control; Optical devices; Optical switches; Quantum well devices; Voltage;
Journal_Title :
Photonics Technology Letters, IEEE
