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JP2004296075A |
To provide an optical cache memory of a low-cost constitution, and a method for making an optical cache memory which stores optical signals.The optical memory (10) has an input port (12) for receiving optical signals to store in the opti...
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JP3575518B2 |
To directly and easily convert parallel signal lights being spatially one dimensional or two dimensional multiple channels into the serial signal light of such a high bit rate as to be equal to or higher than 1T bits/s. Line shaped optic...
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JP2004163573A |
To recognize a plurality of bits of high-speed optical signals in a lump with a simple construction and further to improve discrimination power of signals recognized in a lump.Serial signal light emitted from an optical fiber 12 and conv...
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JP3523319B2 |
PURPOSE: To emphasize optically the contrast of an image of a body to be inspected emitting light itself Such as a liquid crystal panel, a CRT display, etc. CONSTITUTION: An objective beam 15c is generated by incoherent-coherent converti...
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JP3521357B2 |
PURPOSE: To realize coincidence judgement with a bit value '0' and to enable identifying of ultrahigh-speed light patterns with a constitution using an optical nonlinear element (optical AND circuit) with which AND operation is possible....
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JP3517850B2 |
PURPOSE: To provide a very high-speed information processing method capable of easily and surely performing logical operation. CONSTITUTION: An electronic transition between energy levels is performed by either one of irradiation A of li...
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JP3517897B2 |
PURPOSE: To realize a quantum operation element whose power consumption is extremely low, which can perform an operation at high speed and which can be manufactured by a simple manufacturing process. CONSTITUTION: A quantum dot 2D1 and a...
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JP3512800B2 |
PCT No. PCT/GB94/00397 Sec. 371 Date Nov. 15, 1995 Sec. 102(e) Date Nov. 15, 1995 PCT Filed Mar. 1, 1994 PCT Pub. No. WO94/21088 PCT Pub. Date Sep. 15, 1994In a method of recognizing an optically encoded binary word, the word is chosen f...
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JP2004021251A |
To provide a fully optical logic circuit device simple in configuration, low in connection loss and low in cost by using an optical fiber grating coupler which is a fiber type optical device.Two beams of signal light are entered into the...
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JP3486215B2 |
PURPOSE: To provide a pattern recognition device which is compact and low in cost. CONSTITUTION: An input pattern and at least ≥1 reference patterns are inputted to a first region 10a1 of a spatial optical modulation means 10, from whi...
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JP3486214B2 |
PURPOSE: To provide a pattern recognizing device which is compact and low in cost. CONSTITUTION: An input pattern and at least ≥1 reference patterns are inputted to a first spatial optical modulation means 10, from which first coherent...
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JP3473396B2 |
To realize an optical information processor with a large number of pixels by restricting the temperature rise of elements due to heating of a light emitting part in an optical information processor integrated like an array. This is an op...
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JP2003333015A |
To provide a method and device for processing optical signal which are used for ultra-short pulse light used as the light source of optical communication and by which signals can be multiplexed by the OTDM-WDM method through optical sign...
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JP3466980B2 |
To provide an optical signal operation circuit and method and an information recording medium. Medium 121 of an optical signal operation circuit 101 contains a component that the change in the refractive index is proportional to the squa...
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JP3458613B2 |
To provide the wavelength converter which efficiently converts a wavelength employing a simple constitution. Continuous light beams (probe light beams) 12 having the wavelength, which becomes the target of a wavelength conversion, are ma...
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JP2003295247A |
To carry out optical exOR operation at high speed.When signal light S1 and S2 are made incident on an optical exOR circuit 1, a XPM type wavelength transformation element, where control light Ss is made incident, an optical signal state ...
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JP3455791B2 |
To provide an optical operation processor with which inputting/ outputting from plural functional elements to one functional element consisting of the device is enabled. Concerning this optical operation processor, plural functional elem...
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JP3451264B2 |
PURPOSE: To provide the small, inexpensive and highly stable light correlation unit of a high operation. CONSTITUTION: The light correlation unit has at least one liquid crystal array 11 which can electrically be addressed, at least one ...
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JP2003258731A |
To solve a problem that a special decoder circuit is required for a receiving side when a bit-multiplexed optical signal is transmitted by utilizing a Mach-Zehnder interference type optical modulator of a push-pull driving form.In the co...
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JP3442813B2 |
PURPOSE: To provide the 6-port optical integrated circuit capable of realizing an inteferometer for measuring the displacement quantity of an object to be measured, etc., with a high resolving power by realizing an optical logic circuit ...
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JP2003524209A |
The device has an interferometer with at least one electrooptical switch or modulator in one of the sub branches of the interferometer. The interference pattern is produced by a phase shift in the electrooptical switch or modulator corre...
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JP3421341B2 |
A non-linear semiconductor optical device includes an active waveguide with a multiple quantum well construction in the active region. The device is supplied with a drive current at the material transparency current with respect to an op...
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JP3410076B2 |
To provide a device and method for realizing an all-optical logic operation of a signal transmitted from an arbitrary point, to be more specific, like an optical computer using a pumping signal and a probe part signal, relating to the de...
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JP3395378B2 |
PURPOSE: To achieve a quantum operation element which has an extremely low power consumption, speedily performs such operations as exclusive OR, AND, and OR, and can be manufactured by a simple manufacturing process. CONSTITUTION: An upp...
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JP2003107547A |
To embody a full optical XOR logic element by using inverter characteristics of a semiconductor optical amplifier which can be adjusted with a current impressed to the semiconductor optical amplifier and an irradiation signal and a pump ...
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JP2003069495A |
To discriminate coincidence/dissidence between a particular pulse train with a optical label pulse train of a high-speed optical packet signal temporally irregularly arrived from a transmission line by comparing them.The optical pulse tr...
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JP3380352B2 |
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JP2003506726A |
Optical device (1) for the differentiation of a first optical signal and an optical signal lagging behind the first, in which the differentiation is represented by a signal carried by a continuous wave passing through the two arms (5, 6)...
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JP2003500719A |
A method of image compression, comprising: providing image-data encoding light; transforming said light from an image space to a transform space utilizing an optical component; and converting said transformed light into electrical signal...
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JP2003500698A |
A method of image compression, comprising: providing image-data encoding light; transforming said light from an image space to a transform space utilizing an optical component; and converting said transformed light into electrical signal...
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JP2002372731A |
To solve the problem occurring in a difference between group velocities of incident light and exit light which heretofore occur when pulse light is subjected to wavelength conversion by pseudo phase matching. The element for wavelength c...
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JP3358770B2 |
A light control substance having a negative input-output characteristic is used to invert optical signals. The light control substance is an absorbing substance and has a multi-level energy structure such that ground state absorption occ...
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JP3351141B2 |
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JP3343831B2 |
PURPOSE: To realize a filter characteristic having desired sharpness with a small number of steps and to realize arbitrary filter characteristics with one circuit. CONSTITUTION: This light signal processor includes two pieces of first an...
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JP2002277912A |
To provide an optical switch which includes a saturable absorber.An input waveguide 68, an output waveguide 63 and a control beam waveguide 64 are coupled with the saturable absorber 6. When no light is inputted to the control beam waveg...
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JP2002531861A |
An optical method for quantum computing that makes use of nonlocal effects to construct the quantum gates themselves. A nonlocal interaction in which pairs of atoms interchange two photons produces a large nonlinear phase shift. These no...
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JP3325881B2 |
Organic semiconductor layers ( 2, 4 ) are laminated sandwiching an insulator thin layer ( 3 ), and translucent electrodes ( 1, 5 ) are formed on the surfaces of the organic semiconductor layers ( 2, 4 ), respectively. While a voltage is ...
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JP3324026B2 |
To obtain a full-light type optical element having higher resolution by using a thin-film element contg. nanoparticles composed of the monomolecules of org. compds. and the assemblage and aggregate thereof. Incident signal light 1 or lig...
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JP3324231B2 |
PURPOSE: To enable high-speed logic computation with simple constitution by combining optically rotatory dispersion characteristics and a cubic or higher nonlinear optical effect. CONSTITUTION: Reference light 11 is extinghuished by an a...
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JP3325934B2 |
PURPOSE:To correctly recognize and classify patterns in spite of generation of a defect in the patterns and to enable the identification of the presence or absence of the defect and the specification of a defect place. CONSTITUTION:This ...
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JP3323553B2 |
PURPOSE: To provide the optical image output device which can have very many memory images, has a little deterioration in the quality of a reproduced signal, and enables high-speed pattern matching with a desired image. CONSTITUTION: Thi...
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JP2002525685A |
An imaging system ( 10 ) has a fixed lens combination ( 22 ), a spatial light modulator (SLM) ( 20 ) and a linear detector array ( 12 ). A scene image is scanned across a simple array ( 12 ) in a direction perpendicular to the array ( 12...
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JP3311888B2 |
PURPOSE: To provide an optical time slot circuit which replaces rows of optical pulses timewise. CONSTITUTION: An optical time slot circuit is composed of an asymmetric multistage Mach-Zender interferometer M1 and optical frequency conve...
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JP2002521958A |
An optical fiber communications system using spread spectrum code division multiple access techniques to achieve better bandwidth utilization. A transmitting user in the system encodes the optical signal using a first coding mask, and a ...
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JP3295104B2 |
PURPOSE:To obtain high recognizing ability and to recognize many pattern with a small number of reference patterns by regarding information where the features of a pattern is reflected as one parameter for pattern recognition and making ...
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JP3293698B2 |
PURPOSE: To provide the waveguide diffraction grating type optical multiplexer/ demultiplexer with loop back optical paths capable of simplifying constitution and attaining a higher yield and higher stability. CONSTITUTION: This array wa...
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JP3290337B2 |
To provide a logic element and a memory element of atomic scale or near atomic scale which is useful in a computer central processing unit. These elements have two quantum dots 10 and 20 in opposite states and a third quantum dot 30 arra...
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JP3283714B2 |
PURPOSE: To realize an all light flip flop capable of mounting of an all light sequence logic and an all light bit storage device. CONSTITUTION: Two optical amplifiers 150 and 160 are used which are so constituted that they may be operat...
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JP2002514016A |
A laser comprises a first contact to receive an active region control signal, a second contact to receive an optical absorber control signal, and a sandwich of distributed Bragg reflector mirror stacks. Each distributed Bragg reflector m...
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JP3281081B2 |
PURPOSE: To provide an optical circuit which can change binary logic based upon the polarization direction of signal light. CONSTITUTION: The optical circuit 10 is equipped with input parts 12 and 14, selection parts 20 and 22, gates 16 ...
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