Patent
Interferometer apparatus using electro-optic material with feedback
TLDR
In this article, a nonlinear interferometer is described where a Fabry-Perot cavity is substantially filled with an electro-optic material having terminals to which a potential can be applied, and a beam splitter at the output of the cavity deflects a portion of the optical energy coming from the cavity.Abstract:
A nonlinear interferometer apparatus is disclosed wherein a Fabry-Perot cavity is substantially filled with an electro-optic material having terminals to which a potential can be applied. A single frequency, single mode, linearly polarized source of optical radiation is coupled into the cavity and a beam splitter at the output of the cavity deflects a portion of the optical energy coming from the cavity. This deflected portion of output optical energy is incident on a photodetector whose output is amplified and connected to the terminals of the electro-optic material. The resulting device exhibits differential gain, and can function as an optical switch, limiter or optical memory element. With sufficient amplification of the detector output, an optical quantizer is provided. By properly adjusting the cavity length and providing a substantially constant optical signal to the input end of the cavity, an amplified replica of an amplitude modulated optical signal applied to the photodetector appears at the output end of the cavity.read more
Citations
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TL;DR: In this paper, a method for fabricating a microelectromechanical system device is described, which consists of fabricating an array of first elements, each first element conforming to a first geometry; fabricating at least one array of second elements and normalizing differences in an actuation voltage required to actuate each of the first and second elements, wherein the differences are as a result of the selected defining aspect.
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TL;DR: In this paper, a microfabrication process for MEMS devices is described, which may be used to manufacture a MEMS device, and the process comprises depositing one or a stack of layers on a base layer, said one layer or an uppermost layer in said stack being a sacrificial layer; patterning said one or stack of layered layers to provide at least one aperture therethrough through which said base layer is exposed; depositing a photosensitive layer over said layer; and passing light through said at least 1 aperture to expose said photo sensitive layer.
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Process for modifying offset voltage characteristics of an interferometric modulator
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References
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Journal ArticleDOI
Theory of nonresonant multistable optical devices
F. S. Felber,J. H. Marburger +1 more
TL;DR: In this paper, it was shown that a Fabry-Perot interferometer filled with a Kerr medium has a multiple-valued transmission intensity characteristic, and a simple but accurate approximate theory was described.
Journal ArticleDOI
A bistable Fabry‐Perot resonator
P. W. Smith,E. H. Turner +1 more
TL;DR: In this paper, a novel bistable optical device that exhibits differential gain and can function as an optical switch, limiter, or optical memory element is proposed and demonstrated, and the operation of the device is described.
Patent
Modulator stabilization circuits
TL;DR: In this paper, the operating point of a modulator is stabilized by superimposing a pilot signal upon the information bearing modulating signal, and the resulting modulation produced by the pilot signal is compared with a reference signal in a phase detector and a control signal generated which is used to counteract any drift of the operating points.