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Patent Searching and Data


Matches 151 - 200 out of 2,257

Document Document Title
WO/2009/094656A1
A passive all optical polarization switch and apparatus and methods for implementing logical operations using the switch is provided. The switch converts a first polarized beam having a polarization angle equals to or nearly equals to ±...  
WO/2009/015690A1
An optical comparator circuit comprises a first stage comprising an optical gate (10) which receives the signals (A and B) applied to the two inputs and produces at its output an N bit s i g n a l with e a c h bit being representative of...  
WO/2009/015692A1
An optical logic device (1) comprising a first mirror (M1) confronting a second mirror (M2), a saturable absorber located between the mirrors and radiation which is output from the device is output via the first mirror (M1), and the refl...  
WO/2009/001102A1
An optical signal processing apparatus comprises a semiconductor ring laser (10) device having first and second directions of laser action (11, 12), first and second inputs (14, 15) for coupling light into the first and second directions...  
WO/2008/139239A1
An apparatus for communicating via a medium while affecting the strength and/or direction of an electric field experienced by the medium is provided. The apparatus includes signal guiding means for guiding a signal. The signal guiding me...  
WO/2008/131803A1
An optical logic element arranged to combine two input signals A and B and provide an output 'signal out comprise a semiconductor optical amplifier (SOA) having a first end and a second end, a first input port (100) connected to a first ...  
WO/2008/091456A1
Reconfigurable color signage includes an array of light valves each having memory. An active matrix including a plurality of conductive select and data lines is positioned on one side of the array. Each light valve is electrically couple...  
WO/2008/085974A2
The present invention discloses a device structure and method of fabricating claddded quantum dot gate nonvolatile memory and three-state field -effect transistor device that can be scaled down to sub-22nm dimensions and embedded along s...  
WO/2008/080419A1
An optical 1-bit comparator has at least two inputs for receiving a respective first input signal A and a second input signal B, each comprising a single bit word, and at least three outputs, each of the three outputs providing a respect...  
WO/2008/062393A1
An optical data processing system (1) comprising a plurality of optical amplifiers, e.g. two semiconductor optical amplifiers SOA1 and SOA2, connected in an interferometer configuration having inputs A and B, and a feedback loop to a com...  
WO/2008/042755A2
Compounds that are central nervous system drug candidates for the treatment of cognitive decline and, more particularly, Alzheimer's disease are provided. Methods of treating, inhibiting, and/or abatement of cognitive decline and Alzheim...  
WO/2008/034460A1
An optical circuit comprises a bistable optical waveguide (34) having a first and a second transmission state. The waveguide is more transmissive to light of a given wavelength in the second state than in the first state. A first light s...  
WO/2007/136740A2
Apparatus and methods for implementing logical operations using polarization-based logic level representation is provided. An apparatus and method split an input polarized beam into first and second beams having an identical or nearly id...  
WO/2007/094845A1
An all-optical logic gates comprises a nonlinear element such as an optical resonator configured to receive optical input signals, at least one of which is amplitude-modulated to include data. The nonlinear element is configured in relat...  
WO/2007/039152A1
An optical logic gate (10) comprising inputs (12) for optical signals on which to perform a chosen logical operation. An SOA (11) element receives such input signals to be piloted thereby in saturation and its output is connected to at l...  
WO/2006/137902A2
A method of using photoacoustic spectroscopy to determine chemical information about an analyte includes the steps of emitting a light ray for interaction with a sample of an analyte; transmitting the light ray through a fill fluid dispo...  
WO/2006/062526A2
A disclosed apparatus (10) is characterized by a guiding element (12) and a nonlinear element (30). The guiding element (12) guides optical input signals, at least one of which is phase-modulated, to an interference area (26) where such ...  
WO/2006/014730A2
Various embodiments of the present invention are directed to methods for manufacturing complex, anistropic materials with desirable properties for the information storage, processing and display. Certain of these methods involve employin...  
WO/2006/000508A1
An optical logic gate (10) comprises: first and second optical inputs (11, 12) for receiving respective optical signals (A, B) and an optical output (15) for outputting an optical signal (Pout) which represents the result of applying a r...  
WO/2005/114277A1
In one embodiment of the invention, the present invention provides an optical switching device including a splitting device having a first terminal for receiving an input signal and second and third terminals, and an optical loop associa...  
WO/2005/064605A1
An arrangement for read-out of information stored on an optical information carrier (30) is disclosed. Light from a master laser (10) is reflected from the information carrier (30) and injected into a slave laser (20) in polarization sta...  
WO/2005/047970A1
An optically encoding circuit (200) uses a plurality of optical encoders including an optical non-linear element having a periodicity different in I/O characteristics associated with light intensity, so as to optically encode a signal li...  
WO2003042738A9
A photonic switch (30) may be formed using one of a selected group of non-linear optical materials. Each of the materials within this group has a refractive index that demonstrates a substantial peak as a function of wavelength. The phot...  
WO/2004/111718A1
An electro-optical Mach-Zehnder modulator is configured to perform logic exclusive-or (XOR) or inverse exclusive-or (XNOR) operations. The invention may be applied in optical communication network components with a transmitter module use...  
WO/2004/104687A1
A logical element (100) including an optical junction (11) coupled to at least two optical inlets (1, 3) and to at least one optical outlet (5). Incoming light beams (7, 9) of coherent monochromatic light and the same uniform frequency a...  
WO/2004/068178A2
The invention relates to non-linear fibre and integrated optics, more specifically to fully optical switches and optical transistors and can be used for fibre-optical communication lines, integrated optical circuits etc. The inventive me...  
WO/2004/063776A2
An optical transistor is disclosed. The optical transistor consists of a high speed photo-conductor (20) a photodetector region (32) incident to a light intensity modulating region (15) which separates a drain and source region. The disc...  
WO/2004/063810A1
An optical element for producing an optical NOR gate uses a pair of spatial light modulators or phase shifters (130, 135) and one or more beam splitters (110, 115, 120) to produce outputs representing respectively an XOR function of two ...  
WO/2004/038492A1
An optical signal amplifying three-terminal device (10) for directly amplifying an optical signal by using a control input light. A first input light L1 of a first wavelength &lgr 1 and a second input light L2 of a second wavelength &lgr...  
WO/2004/031848A1
A gap-soliton structure is provided. The gap-soliton structure includes a cladding structure having alternating layers of different index values. A core region is interposed between the alternating layers of index values. The core or the...  
WO/2004/027508A1
An optical path switching method according to the present invention comprises converging and irradiating, on a light absorption layer film provided in a thermal lens forming element (1, 2, 3) including at least the light absorption layer...  
WO/2004/023193A2
A molecular system (430) is provided for electric field activated switches, such as optical switches (101, 205, 207, 209), constituted of molecules having a rotatable portion (rotor) (432) connected between two stationary portions (stato...  
WO/2004/023232A1
A quantum circuit and a quantum computer capable of performing the multi−bit quantum computation. Control unitary conversion is realized by indicating the quantum bit by the optical polarization direction, successively inputting the po...  
WO/2004/012025A1
The invention relates to a method and device for comparing two bit sequences in an all-optical environment. More specifically, the invention comprises an architecture based on an XOR feedback logic gate (i.e. the output signal from said ...  
WO/2004/006009A1
The object of the invention is a logical optical device comprising at least two molecules (11) intended to generate the electric field, connected to a third molecule (12) provided with non-linear optical properties, wherein a first light...  
WO2002065205A9
An entirely passive all-optical device, referred to as an optical hard limiter, consists of alternating layers of materials having oppositely signed Kerr coefficients and substantially different linear indices of refraction, wherein the ...  
WO/2003/091775A1
An optical bi-stable switch includes a photonic crystal cavity structure using its photonic crystal properties to characterize a bi-stable switch so that optimal control is provided over input and output of the switch. A plurality of wav...  
WO/2003/077259A1
There are provided a very high speed optical memory method and apparatus using bistable semiconductor laser capable of controlling each bit and reading out information at the necessary timing. The very high speed optical memory apparatus...  
WO/2003/058289A2
A photonic switch (30) according ot the present invention may be formed using one of a selected group of non-linear optical materials. Each of the materials within this group has a refractive index that demonstrates a substantial peak as...  
WO/2003/040899A2
A method and apparatus for performing logic operations using quantum polarization states of single photons, include a first polarizing beam splitter having first input spatial modes and first output spatial modes for a first set of ortho...  
WO/2003/025665A1
A set−reset flip−flop of all−optical operation. A set light is inputted through a set port. Then, a multimode interference portion in a waveguide oscillates only in a set mode. As a result, a noninverted output Q is produced from a...  
WO/2003/021527A2
A method and apparatus for quantum information processing is disclosed in which logical qubits |0>¿L? and |1>¿L? are respectively encoded by different near orthogonal coherent states |$g(b)> and |$g(a)>, where <$g(a)|$g(b)>$m(K)0, |$g(...  
WO/2002/103450A1
A device comprises a nonlinear optical crystal (1) having a periodic polarization inversion structure for wavelength conversion and&sol or optical computing. The group velocity matching condition is so determined that the group velocity ...  
WO2001071416A9
An all optical logic gate comprises parallel semiconductor optical amplifiers (200, 202, 204) with input devices (215, 220, 225) for carrying out logic operations among multiple optical signals based on their wavelengths and polarization...  
WO2001020379A9
A light transfer device is provided that includes a first light pathway (1502) having a first input and a first output and a second light pathway (1504) having a second output. The second light pathway is coupled to the first light pathw...  
WO/2002/086557A2
Controlling, guiding, manipulating, and circuiting light and performing surface-enhanced spectroscopy in a medium comprising plasmonic nanomaterials via the excitation of plasmon modes in the materials. The plasmonic nanomaterials are ba...  
WO/2002/079837A1
Optical system (200), which controls interference pattern (150) of combined grating (100), by controlling different illuminations of beams (132, 134) on grating. Optical fiber (202) guides and emits used in optical communication. Informa...  
WO/2002/079836A1
A diffraction grating device (100) has both reflecting (106) and transmitting (108) gratings interleaved to allow both transmission diffraction patterns and reflection diffraction patterns to be formed by means of the same device (102). ...  
WO/2002/079838A1
Optical system (200), which control interference pattern (150) of combined grating (100), by controling difference illuminations of beams (132, 134) on grating. Optical fiber (202) guides and emits beams toward leans (204) that converts ...  
WO/2002/079816A2
An all-optical and gate (1400) forms the basis of a switch. Each switch element (1200) has an optical and gate (1202) with an input that is divided into to optical signals (1420). One is delayed with respect to the other. By encoding the...  

Matches 151 - 200 out of 2,257