Abstract
Theoretical and experimental results on new guided-wave electro-optic devices for ultrafast optical deflection, switching, and modulation are presented. The devices utilize simple electrode arrangements consisting of a small number of tilted electrodes which effectively simulate prism structures in electro-optic waveguides. Devices using single-mode Y-cut LiNbO3 outdiffused waveguides have demonstrated excellent performance figures: nine beam positions (channels) per unit at a driving voltage of 8 V per beam position, −0.5 dB optical insertion loss and cross talks between adjacent channels varying from −13.5 to −9 dB. The new devices are shown to be capable of performing optical multiport beam deflection/switching and modulation at very low driving voltages and at ultrafast speeds because of their very small capacitances, and are, therefore, highly useful for future wide-band fiber and integrated optic systems.
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