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6538791 |
Method and apparatus for real time optical correlation
A system for performing real time optical comparisons using an optical correlator permits comparing a sampled image to a wide variety of reference images through the utilization of a multiple...
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6532091 |
Optical digital regenerator
An optical digital regenerator for digitally regenerating an input signal in an intact optical state. A first operating unit has a first probe light generator for generating a first probe light and...
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6532097 |
Image registration apparatus having an adjustable reflective diffraction grating and method
An image registration apparatus has a substrate support capable of supporting a substrate, the substrate support having a support motor capable of moving the substrate support. A radiation beam...
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6525889 |
Device and method for producing optically-controlled incremental time delays
The present invention includes time delay devices and time delay systems. The invention also includes machines and instruments using those aspects of the invention. The invention may also be used...
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6522455 |
WDM optical communication system having a dispersion slope compensating element
Consistent with the present invention, in-fiber Bragg gratings are used to demultiplex optical signals in a WDM optical communication system. The in-fiber Bragg gratings also perform dispersion...
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6522446 |
Anisometrically shaped metal particles, liquid suspensions and films thereof and light valves comprising same
The invention is directed to the use of anisometrically shaped metal particles in liquid light valve suspensions, light valve films and light valves. The anisometric metal particles may have...
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6512619 |
Frequency modulation apparatus
A first optical modulator converts an electrical signal into an optical-frequency-modulated signal, supplying the same with unmodulated light from a local light source to a first optical receiver....
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6503421 |
All polymer process compatible optical polymer material
A terploymer containing N-halogenated phenyl maleimide units or N-halogenated phenyl bismaleimide units, one or more second units selected from the group consisting of halogenated acrylates,...
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6499844 |
Projection device and integrator plate suitable for such a projection device
A projection device comprising at least one light source, at least one light-modulation panel preceding the light source, and polarization-separating means arranged between said light source and...
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6498671 |
Regenerator with reconstitution of an optical signal carrier wave
An optical signal regenerator includes a mechanism for reconstituting an optical signal carrier wave. The optical signal is thus regenerated on the same wavelength as the incoming carrier wave.
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6497492 |
Back-lighting system for a transmissive electrooptic modulator using the light polarization effect
The present invention relates to a back-lighting system for a transmissive electrooptic modulator using the light polarization effect. The system comprises a means for generating light rays, a...
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6476956 |
Fast optical modulator
A short pulse of radiation is generated by shining radiation through a magneto-optical material. The material is excited twice to rapidly change a property of the wave, such as the direction of the...
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6462858 |
Fast attenuator
The invention provides a fast variable optical attenuator including a reflective membrane that serves as a varifocal mirror. Electrostatic deflection of the mirror defocuses the optical system and...
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6437899 |
Opto-electric conversion semiconductor device
There is described an opto-electric conversion semiconductor device having a superior opto-electric conversion characteristic over a wide frequency range for optical communication. An opto-electric...
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6429974 |
Add-drop multiplexer
Methods and apparatus are contemplated for dropping and adding a user-chosen wavelength sub-band in a band of wavelengths. Methods and apparatus are contemplated for separating and dropping...
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6424448 |
Antiglare optical device
An antiglare optical device for selectively attenuating bright light sources in an object field. This device comprises at the object end, the optics necessary for focusing incoming rays onto a...
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6421163 |
Two dimensional transform generator
A system that optically performs complex transforms, such as Fourier transforms. The system includes a pixel addressable spatial modulator that, in parallel, adjusts the phase of the light of each...
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6417950 |
Three-color imaging on each pixel for increased resolution
Apparatus for increasing color resolution and quality in digital imaging systems temporally modulates red, green and blue light, detects all three colors at each pixel, and band pass filters the...
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6400494 |
Traveling wave optical modulator
A traveling wave optical modulator comprising a substrate made of a ferrodielectric electro-optic single crystal and having a pair of opposing main planes, an optical waveguide formed on a side of...
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6392779 |
Composite second-order bias control schemes
A bias control system is adapted to reduce composite second order distortions in an electro-optic modulator. The bias control system includes a pilot tone generator that generates a first pilot...
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6388372 |
Display screen
A display screen may be formed with a moth-eye like array of elements of sufficiently small size to reduce glare from ambient light while passing outbound image light substantially unaffected. The...
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6374087 |
Selective peak limiter with a circulator having a third branch having band-pass filter, a threshold element and an adapted load in series
A peak limiter is intended to limit the peak of a signal that has a given frequency, in an assembly comprising other signals of lower amplitude and different frequencies. The peak limiter includes...
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6373614 |
High performance polarization controller and polarization sensor
The invention is an instrument for sensing the state of polarization (SOP), and for transforming the SOP of a beam of light from an incident continuously-varying arbitrary SOP to a desired exit...
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6370283 |
Electro-optic modulator for generating solitons
A method and apparatus is provided for generating optical pulses with an electro-optic amplitude modulator. The modulator includes first and second waveguides that form an optical interferometer....
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6366387 |
Depixelizer
A depixelizer for enhancing an image generated by a spatial light modulator having an array of pixels. The depixelizer comprising a translatable stage having the spatial light modulator attached...
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6366390 |
Pulse interleaver
A pulse interleaver splits an input pulse train into at least two optical branches ( 20,22 ). A first one of the branches ( 20 ) carries a first signal, and is terminated with a mirror ( 24 ) and a...
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6360012 |
In situ projection optic metrology method and apparatus
Wavefront information for an optical system is calculated based on the intensity of an image of a plurality of gratings having different periods and orientations taken from at least two different...
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6359720 |
Optical processor using electro-absorption type optical modulators
An optical processor 100 , includes the first optical processing unit 100 a and the second optical processing unit 100 b which are optically connected with each other. The first optical...
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6356344 |
Mixing apparatus and optical rangefinder using the same
The invention particularly relates to a mixing apparatus using an eccentric phase plate, and an optical rangefinder using the mixing apparatus. In the optical rangefinder, an external distance...
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6356377 |
Mems variable optical delay lines
A variable optical delay line using MEMS devices. A reflector on a micro machine linear rack is positioned and spaced from an input source and/or an output to receive and reflect input light waves...
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6351326 |
Method and apparatus for optically modulating light utilizing a resonant cavity structure
An optical modulator that modulates an optical beam through directed through an integrated circuit die. In one embodiment, the optical beam is directed into and out of a flip chip packaged...
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6341031 |
Optical pulse generation using a high order function waveguide interferometer
An optical pulse generator having a high order transfer function that comprises a first and a second nested interferometric modulator, each modulator comprising an optical input, an electrical...
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6335813 |
Device for formatting binary optical signals
To format a power modulated input optical signal, at the same time as improving its power dynamic range and the extinction rate of the output signal, a device for formatting binary optical signals...
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6335991 |
Optical modulation apparatus and optical modulation method
An optical modulation apparatus is provided with an optical modulator 2, a variable gain amplifying circuit 1 connected to this optical modulator 2, a detecting circuit 3 and a gain control...
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6334004 |
Optical modulator, bias control circuit therefor, and optical transmitter including the optical modulator
Disclosed herein is an optical modulator including an optical waveguide structure for converting an input beam into first and second output beams, an electrode for applying an electric field to the...
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6330361 |
Adaptively aligned optical correlator and method
An improved optical correlator using a coherent light beam employs a method of adaptive alignment. A test pattern modulates an input spatial light modulator. The modulated beam propagates through...
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6330266 |
Method for selecting a semiconductor integrated optical modulator/laser light source device
The present invention provides a method for selecting a semiconductor integrated optical modulator/laser light source device comprising a modulator section and a laser section. The method comprises...
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6323985 |
Mosfet through silicon modulator and method
Through silicon optical modulators (TSOM) formed in a silicon integrated circuit comprise a grating array of MOSFET elements. The TSOM's provide optical phase shifts from different areas which...
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6320691 |
Electrode connection method
A method of connecting first electrodes formed on a first substrate to second electrodes formed on a second substrate and partially coated with a resist pattern so as to substantially expose an...
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6295158 |
Thermooptical modulator
The thermooptic modulator includes a wave guide (1) having a switching section (4), a refracting section (5) bordering the switching section (4) and extending transversely to a signal propagation...
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6285345 |
Liquid crystal display
A liquid crystal display of the UV-phosphor type comprises a light source 1 for producing activation light at a predetermined narrow range of UV wavelengths, a collimator 3 for directing the...
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6278105 |
Transistor utilizing photonic band-gap material and integrated circuit devices comprising same
A tunable photonic band-gap device is disclosed which utilizes photoresponsive materials and is tunable over a range of wavelengths with the application of light. The device comprises a structure...
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6275320 |
MEMS variable optical attenuator
A MEMS (Micro Electro Mechanical System) variable optical attenuator is provided that is capable of optical attenuation over a full range of optical power. The MEMS variable optical attenuator...
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6275322 |
Michelson phase shifter interleaver/deinterleavers
Interleavers and deinterleavers for filtering optical signals are described. The interleaver separates subsets of channels. The deinterleavers mix subsets of channels. Interleavers and...
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6268951 |
Optical signal interleaver/deinterleavers
An interleaver and a deinterleaver for filtering optical signals are described. The interleaver separates subsets of channels. The deinterleavers mix subsets of channels. Interleavers and...
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6266176 |
Device for optical interconnection
The present invention includes optical interconnection devices and optical interconnection systems. The invention also includes machines and instruments using those aspects of the invention. The...
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6262828 |
Method and apparatus of driving an optical modulator to measure, and compensate for, dispersion in an optical transmission line
An apparatus includes a driving voltage generator that generates a pulse driving voltage having a rising edge and a decaying edge. An optical modulator produces a first pulse at the rising edge of...
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6262829 |
Method of digital grayscale control using modulation of a slow-acting light source
A method of digital grayscale control using light source modulation. First, a light valve, grayscale data, and a light source are provided. The light valve includes a spatial light modulator with...
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6252557 |
Photonics sensor array for wideband reception and processing of electromagnetic signals
A photonics sensor and array for the reception and processing of RF signals. In one embodiment, the present invention is an antenna comprising: a first electro-optically active optical waveguide; a...
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6243216 |
Fast responding optical modulator
A fast responding optical modulating device for a high-density recording using in an optical pickup includes a light source, an optical modulator and a pair of lenses. The pair of lenses are so...
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