An electro-optical device capable of modulating the amplitude or phase of an optical output in response to an electrical data or control signal, or of switching it, has reduced frequency-dependence and a better combination of operating voltage and bandwidth. It comprises a body of electro-optically active...http://www.google.fr/patents/US7088874?utm_source=gb-gplus-shareBrevet US7088874 - Electro-optic devices, including modulators and switches
Electro-optic devices, including modulators and switches