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Fast 2*2 Mach-Zehnder optical space switches using InGaAsP-InP multiquantum-well structures



IEEE Photonics Technology Letters 7 (1995), Nr.6, S.644-5
ISSN: 1041-1135
Fraunhofer HHI ()
electro-optical switches; gallium arsenide; gallium compounds; high-speed optical techniques; iii-v semiconductors; indium compounds; optical communication equipment; quantum confined stark effect; semiconductor quantum wells; mach-zehnder optical space switches; InGaAsP-InP multiquantum-well structures; rf drive; rc time-constant limited lumped electrodes; cut-off frequencies; fast optical switching applications; 10 GHz; InGaAsP-InP

We report fast 2*2 Mach-Zehnder optical space switches by using quantum confined Stark effect in InGaAsP-InP multiquantum-well structures that are ultracompact, require low voltages, and employ a simple RF drive with RC time-constant limited lumped electrodes. Cut-off frequencies in excess of 10 GHz are observed suitable for a variety of fast optical switching applications.