A 64×32 liquid-crystal-on-silicon (LCOS) backplane with a novel framebuffer pixel array has been designed and fabricated using the AMI Semiconductor 0.5-µm double-poly triple-metal CMOS process. The pixel circuit described herein increases the brightness significantly without sacrificing image contrast ratio. Characteristics of various liquid-crystal modes applicable to field sequential color displays have been investigated. The LCOS microdisplay, employing an optimized optically compensated birefringence mode, demonstrates fast response times (OFF=0.3 ms, ON=1.2 ms) enabling a frame rate of 720 Hz, with a potentially high contrast ratio of up to 1600:1.
KEYWORDS: Liquid crystals, Optical amplifiers, Signal attenuation, Polarization, Switches, Digital signal processing, Signal processing, Attenuators, Optical signal processing, Telecommunications
In this paper, we present several different types of liquid-crystal WDM signal processors includign broadband optical switches, voltage-controlled variable optical attenuators and optical harmonic equalizers.
KEYWORDS: Liquid crystals, Signal processing, Polarization, Signal attenuation, Optical amplifiers, Attenuators, Digital signal processing, Optical switching, Optical signal processing, Wavelength division multiplexing
In this work, we presented several different types of liquid-crystal WDM (wavelength-division-multiplexing) signal processors including broadband optical switches, voltage-controlled variable attenuators and optical harmonic equalizers.
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