Abstract

An implementation technique of an evanescent switch using a cylindrical piezoelectric driver material is discussed. The driver has provisions for fine alignment of the prisms. The selection criteria for the choice of the prism material are evaluated in detail. The measured insertion loss was 10% ± 2%, and these are a 4000: 1 extinction ratio at 10.6 μm between the ON and OFF positions of the switch. The curve showing attenuation vs voltage applied across the piezoelectric driver indicates a large dynamic range for the device as a variable attenuator.

© 1981 Optical Society of America

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