Working Principle of Liquid Crystal Optical Attenuator
Liquid crystal modulators are a type of optical modulator which utilize liquid crystals to control the intensity, phase, or polarization of light. Nematic liquid crystals are birefringent materials whose effective birefringence can be changed by varying an applied voltage. The attenuator circuit will allow a known source of power to be reduced by a predetermined factor, which is usually expressed as decibels. HsienHui Cheng Kent State University Liquid Crystal Institute and Chemical Physics Interdisciplinary Program Kent, Ohio 44242 Achintya Bhowmik Intel Corporation 2200 Mission College Boulevard Santa Clara, California 95054 Philip J.
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