CDTE-IN MONOCRYSTAL MODULES FOR ALL-OPTICAL PROCESSING

The aim of this work is to present the application of photoconductive properties of electro-optical n-doped CdTe:In single crystals to all-o ptical processing of signals at lambda = 1550 nm. The mechanism exploi ts tile photogeneration of charge carriers from deep intragap energy l evels and their trap-limited drift process under the action of an exte rnally applied cw electric field. An internal space-charge counterfiel d results that locally shields the electro-optic effect. Different typ es of free-space architectural elementary modules in CdTe:In have been implemented. A non-coherent wavelength converter, a switching device, a sampler and a time-to-space converter are presented. The nanosecond regime has been reached.