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7626750 |
Electro-optical device, drive circuit, and electronic apparatus
Disclosed herein is an electro-optical device including: a plurality of electro-optical elements of which the intensity of emitted light is controlled according to drive signals; a plurality of...
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7548363 |
Bi-stable electrowetting optical element and driving method therefor
An optical element used, e.g., in an electrowetting display device having a number of pixels, is arranged in an array. Each optical element includes a cell filled with a polar conductive fluid,...
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7502157 |
Multi-layer spatial light modulator for amplitude and phase control
One embodiment relates to a method of independently controlling amplitude and phase modulation by a spatial light modulator. Light is illuminated onto upper layer deflectable planar areas and lower...
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7495816 |
Diffraction-based pulse shaping with a 2D optical modulator
Disclosed is a method including: (i) dispersing frequency components of an input EM waveform along a first direction with each frequency component spatially extended along a second direction...
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7468828 |
Spot array generation using a MEMS light modulator
An optical system having a spatial light modulator (SLM), in which each pixel has an optical cavity and is adapted to: (i) change the intensity of a reflected beam by changing the size of the...
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7453475 |
Optical display device, program for controlling the optical display device, and method of controlling the optical display device
Exemplary embodiments of the invention provide an optical display device that modulates light from a light source in two stages through an optical modulator and a luminance adjusting element to...
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7450288 |
Optical modulation device, optical transmitter, and optical transmission equipment
In the bias stabilization control using average optical power of signal light, there is a case where a control algorithm (maximum control or minimum control) changes depending on the amplitude of...
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7440642 |
Integrated optical modulator and method for manufacturing the same
An integrated optical modulator and method for manufacturing thereof are disclosed. The integrated optical modulator comprises a carrier wave band modulator using a double sideband modulation...
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7426349 |
Method of signal transmission in a WDM communication system
In a representative embodiment, a transmitter of a WDM communication system is equipped with a Mach-Zehnder modulator (MZM) configured to produce an optical signal corresponding to a duobinary data...
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7376358 |
Location specific optical monitoring
An optical spike is generated at an arbitrarily selected location within an arbitrary optical link. The optical spike is generated by deriving a spike signal having a plurality of components, and...
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7349636 |
Optical phase and intensity modulation with improved transmitters
An apparatus for transmitting at least a digital optical signal with a simultaneous modulation of the amplitude and the phase, the said encoded optical signal having improved spectral efficiency...
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7324262 |
Optical shutter and light scanning apparatus employing the same
An optical shutter includes a cell having a transparent panel and a hydrophobic transparent insulation panel which are arranged to face each other, a transparent electrode formed on an outer...
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7283288 |
Scanning device
According to an aspect of the invention, there is provided a scanning device, which is provided with a light source unit that emits a light beam, a collection optical system that converges the...
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7277216 |
Differential interferometric light modulator and image display system
A differential interferometric light modulator and image display system comprises a polarizing beam splitter, a polarization displacement device and a linear array of MEMS optical phase shifting...
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7227687 |
Complex spatial light modulator
One embodiment relates to a spatial light modulator (SLM) for modulating light incident thereon. The SLM includes a plurality of pixels, each pixel including a plurality of phase shift elements....
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7224506 |
Single side band modulation device
A single side band modulation device includes a first Mach Zehnder interferometer and a second Mach Zehnder interferometer. The first Mach Zehnder interferometer includes at least two output arms,...
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7167293 |
Silicon-based electro-optic phase modulator with reduced residual amplitude modulation
An arrangement for removing unwanted amplitude modulation from the output of an electro-optic phase modulator (formed within a silicon-on-insulator (SOI) system) includes resonant filters that are...
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7142346 |
System and method for addressing a MEMS display
A system and method for addressing an array of MEMS display elements, such as interferometric modulators, from a drive control. A display includes groups of display elements that are addressed with...
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7136213 |
Interferometric modulators having charge persistence
An iterferometric modulator is formed having a dielectric with charge persistence. The interferometric modulator is addressed by a method making advantageous use of the charge persistence property,...
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7130013 |
Method of forming a display
A method of forming a display including three conductive layers is described. The display is driven by contacting a third conductive layer and a second conductive layer, wherein the second...
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7106486 |
Optical modulator control system
An apparatus comprising a control system coupled to an optical modulator. The control system including an Radio Frequency (RF)/dither ratio unit coupled to the optical modulator, wherein the...
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7103286 |
Method and system for optimizing the pulse form of an amplitude modulated optical signal
The influences on transmission quality caused by chirp and self-phase modulation are at least largely corrected by way of an optimally set operating point of the modulator ( 2 ). Suitable criteria...
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7092643 |
Optical transmission apparatus and bias voltage control method for the optical modulator
The optical transmission apparatus has a Mach-Zehnder optical modulator, a light source for applying an optical signal of a continuous light to the optical modulator, a driving circuit for...
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7068412 |
Multi-wavelength generating method and apparatus based on flattening of optical spectrum
With respect to the relative intensity noise (RIN) for inputs to an optical modulator or the signal-to-noise ratio (SNR) for outputs therefrom, the optical modulator modulating coherent lights of...
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7057790 |
Field sequential color efficiency
A method and system for generating colors efficiently. In one embodiment, a start signal for a primary color subcycle may be received. A primary light source used to drive the primary color may be...
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7046414 |
Optical modulation system applying a highly stable bias voltage to an optical modulator
An optical modulator is driven by applying, to a first signal electrode, an amplitude-modulated input driving signal waveform, which has a pair of same phase envelope lines, and which has a full...
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7024056 |
Electro-optic gating arrangement with improved duty cycle
The device includes an oscillator ( 1 ) to generate an electrical signal of a predetermined frequency and a signal divider ( 2 ) to split the electrical signal into first and second signals. The...
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7023601 |
Optical E-field modulation using a Mach-Zehnder interferometer
A method for modulating the E-field of an optical carrier signal utilizes a Mach-Zehnder modulator having a pair of independently controllable branches. A pair of independent branch drive signals V...
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7019882 |
Generation of M-ary digital signaling constellations directly at lightwave frequencies
A coherent optical link includes a laser master oscillator operative to generate an amplitude- and phase-stable narrow linewidth optical carrier, a first programmable read-only memory (PROM) having...
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6980346 |
Display device
A method and apparatus includes receiving light at an intensity modulator. Subsequently, the light is received at an intensity-color modulator that includes at least one Fabry-Perot filter having a...
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6965479 |
Optical filter, interleaver, and optical communication system
A first optical system ( 11 ) has a first beam splitter ( 211 ). The first beam splitter ( 211 ) splits light arriving through a first optical path (P 1 ) into two light beams, and outputs one...
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6897995 |
Method and device for variable optical attenuator
A variable optical modulator for optical communication systems using a tunable dynamic grating comprises a gel or membrane layer attached adjacent to a prism communicating light to/from the optical...
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6847475 |
Optical signal processor and method thereof
An optical signal processor comprises a first input terminal for a pulse signal light with a signal wavelength, a second input terminal for a probe light with, probe wavelength different from the...
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6816299 |
Method and system for optimization of an optical transmission signal which is modulated with a binary data signal
A method and system for optimization of an optical transmissions signal which is modulated with a binary data signal, wherein a control device ensures that the operating point and the modulation...
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6813063 |
Exciton polariton optical switch
A waveguide having a periodic structure and the excitation of exciton polariton as one form of interactions between radiation fields and matter systems are applied to light switching to provide an...
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6795227 |
Method and apparatus for driving light-modulating elements
One embodiment disclosed relates to a system for modulating a plurality of micro-electromechanical (MEM) devices. The system includes a means for providing an amplitude modulation signal to each...
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6788832 |
Optical modulator and optical signal and electric wave signal converter using same
An optical modulation apparatus includes an optical signal input section, an optical signal propagation path, an optical modulator that modulates the phase of optical signals in at least two of a...
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6781739 |
High-frequency AC drive for MEM devices
One embodiment disclosed relates to a method for driving a micro electromechanical (MEM) device. The method includes generating a high-frequency AC drive signal that is substantially greater in...
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6771409 |
Simultaneous wavelength conversion and amplitude modulation in a monolithic quasi-phase-matched (QPM) nonlinear optical crystal
An optical element capable of performing nonlinear frequency conversion and amplitude modulation simultaneously is disclosed. The optical element includes a monolithically integrated,...
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6762882 |
System and method for use of dark field fourier diaphragm in multi-frequency imaging
An imaging system is disclosed that includes an illumination source, a modulator and a variable Fourier diaphragm. The illumination source produces a first illumination field having a first...
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6751001 |
Non-sampled auto-format conversion method
A device for the passive conversion of one format to another includes: a laser light source at a predetermined frequency, a line converter configured to produce a fan of light, a movable lens...
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6728436 |
Optical signal modulation method and optical signal transmission system for high speed transmission system
The invention relates to an optical signal transmission system with phase modulation and the implementation method. The system adds a phase modulator in the optical signal-emitting module. The...
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6717708 |
Re-circulating optical pulse generator
A Mach-Zehnder Modulator (MZM) pulse generator is provided having an increased power output. Power carved from the output signal in creating the pulses is recycled back to the input of the pulse...
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6710909 |
Projector
A projector has an illuminating optical system for irradiating white light, a color switching optical system for dividing the white light irradiated by the illuminating optical system into color...
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6661553 |
Optical modulator which optimizes NRZ modulation
The invention provides an optical modulator for transmitting data encoded in NRZ mode by modulating the intensity of a light signal, the modulator including means for shaping the light signal...
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6650458 |
Electro-optic modulator with continuously adjustable chirp
An electro-optic modulator having a continuously adjustable chirp is provided. Optical signals input into the electro-optic modulator are divided into portions which are phase modulated in opposite...
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6621615 |
Method and system for image display
A light-modulating system, includes: a light source for emitting a sequence of light pulses at a period T p ; a light modulator having a variable-width switching profile with rise and fall times T...
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6594061 |
Acceleration-insensitive opto-electronic oscillators
Techniques for reducing frequency shifts in an oscillating frequency of an opto-electronic oscillator by having at least two separate optical delay elements in an optical portion of an...
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6590693 |
Light modulation
The present invention relates to a modulated light source, in particular for use as part of an opto-electronic communication network. The modulated light source has a laser and an external...
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6574031 |
Method for balancing detector output to a desired level of balance at a frequency
A multi-gas sensor is provided which modulates a polarized light beam over a broadband of wavelengths between two alternating orthogonal polarization components. The two orthogonal polarization...
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