Optical unit having means for electrically shielding electroopti

Details Optical unit having means for electrically shielding electroopti Optical unit having means for electrically shielding electroopti

1989-11-09

1992-01-21

Laroche, Eugene R.

Optical: systems and elements

Optical modulator

Light wave temporal modulation

359254, 359251, 359276, 357 74, G02F 103, G02F 107, H01L 2302

Patent

active

050832212

ABSTRACT:
An optical unit having an electrooptical element whose optical properties are changed as a function of a voltage applied thereto to modulate an incident light in response to the applied voltage. The optical unit includes a shielding member for electrically shielding at least a portion thereof which includes the electrooptical element from an external electric field. The shielding member protects the electrooptical element from an influence of an external electric field on an electrooptical effect of the electrooptical element. The shielding member may be an electrically conductive member, such as a metallic casing accommodating the electrooptical element, or an electrically conductive layer covering a housing accommodating the element.

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T. Mitsui et al., "Development of Fiber-Optic Voltage Sensors and Magnetic-Field Sensors", 1986 IEEE.
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Journal of Physics E Scientific Instruments, Jun. 1985, vol. 18, No. 6, pp. 453-544, "Capcitively Coupled KD*P Pockets Cell for High voltage Pulse Measurements",

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