98 results about "Optical logic" patented technology

An optical AND logic gate includes a summing gate having first and second inputs for receiving first and second optical signals, and a threshold device. The gate produces an output corresponding to the AND product of the first and second optical signals. In another version the AND gate includes first and second inputs for receiving first and second optical signals, and an optical loop for producing an output corresponding to the AND product of the first and second optical signals. In an alternative versions a NAND gate is provided by applying an optical logic NOT on an AND gate.

An organic field-effect transistor comprising: a source region; a drain region; one or more organic semiconductor layers disposed between the source and drain regions; a gate region; and a dielectric region disposed between the organic semiconductor layer(s) and the gate region; wherein the composition of the organic semiconductor layer(s) is such as to transport both electrons and holes, with the mobility of the holes being substantially equal to the mobility of the electrons such that the transistor substantially exhibits ambipolarity in its transfer characteristics. The organic field-effect transistor is preferably a light-sensing organic field-effect transistor. Numerous modifications to the composition and structure of organic field-effect transistors are also disclosed, as are examples of electro-optical switches, electro-optical logic circuits and image sensing arrays.

The cascading structure is as following: CW light and signal light A are connected to the input end of the first coupler respectively; the output of the first coupler is connected to the first optical amplifier of semiconductor, first wavelength selector, and first power regulating device; signal light B is connected to the input end of the second coupler; output end of first power regulating device and output end of second power regulating device are connected to the input end of the second coupler; the output end of the second coupler is connected to second optical amplifier of semiconductor, second wavelength selector in sequence; through adjusting output powers of first power regulating device and second power regulating device can obtain full optical logic AND gate and / or NOT gate at different output wavelengths of the second wavelength selector. The invention realizes advantages of full optical logic device in crossed gain modulation type, and based on same class of structure.

The invention provides a two-dimensional eutectic organic single crystal micro crystal, a preparation method and application thereof. The method comprises the following preparation steps: selecting pyridine nitrogen-containing oligostyrene-based organic molecules as halogen bond donor molecules, and selecting iodobenzene organic molecules as halogen bond acceptor molecules, adding the halogen bonddonor molecules and the halogen bond acceptor molecules into a good organic solvent and sonicating for several minutes to prepare an organic solvent stock solution of the halogen bond donor moleculesand the halogen bond acceptor molecules; at room temperature, adding the organic solvent stock solution of the halogen bond donor molecules and the halogen bond acceptor molecules into a poor organicsolvent to shake uniformly, then dripping on a substrate, and drying the organic solvent through volatilization to obtain a two-dimensional organic eutectic micro nanostructure material. The two-dimensional eutectic organic single crystal micro crystal can be supposed to be used for preparing an optical logic device for multichannel input and output. The invention provides a new approach for realizing controllable preparation of the two-dimensional organic micro crystal, and the organic crystal can realize asymmetric photon transmission, thereby realizing the optical logic device with multiple input / output channels which take a two-dimensional organic micro nanostructure crystal as a carrier.

An optical logic circuit is disclosed. The optical logic circuit is configured on a substrate of a first material. The optical logic circuit also has an optical layer which overlays the substrate layer and is at least partially configured of a second material. The optical layer is patterned to provide a plurality of optical pathways. At least one of the optical pathways transmits an optical bias and at least one optical pathway is configured to provide an optical input and at least one optical pathway is configured to provide an optical output. The optical pathways are configured to provide a Boolean logic output based on the at least one optical input.

The embodiment of the invention discloses two all-optical logic devices. The first all-optical logic device comprises two optical waveguides each having a delayer, a quantum dot-double die cavity, a first mode photon detector and a second mode photon detector, wherein the difference between a first delay parameter of the first optical waveguide and a second delay parameter of the second optical waveguide is a specific delayed value (Delta t) set according to a test result. The second full-optical logic device comprises two polarized beam splitter, five optical waveguides without a delayer, three quantum dot-double die cavities, a first mode photon detector and a second mode photon detector, wherein the three quantum dot-double die cavities have the same specific delayed value (Delta t) of an output response optical signal of the mode to an output response optical signal of the other mode when an input optical signal only has one mode optical singal. Based on the quantum destructive interference effect, the all-optical logic device can realize logic functions of non, and, as well as or.

The invention discloses a photonic crystal all-optical tunable filter. The tunable filter is of a two-dimension photonic crystal structure and comprises three ports, a signal light and controlling light input waveguide, a signal light output waveguide and a controlling light output waveguide. Two photonic crystal defect cavities are symmetrically formed in the intersection position of the three waveguides, and a movable dielectric cylinder is arranged in each photonic crystal defect cavity. Several dielectric cylinders are respectively removed from the upper portion and the lower portion of each photonic crystal defect cavity, and the upper portions of the photonic crystal defect cavities and the controlling light output waveguide form an odd mode output structure, and the lower portions of the photonic crystal defect cavities and the signal light output waveguide form an even mode output structure. The photonic crystal all-optical tunable filter is simple in structure, high in response speed, high in anti-interference performance and easy to integrate with other optical logic elements.

The invention discloses an optical logic device with multibit input of a micro-cavity structure and a method, and relates to the technical field of photon chips. The optical logic device comprises a metal substrate, a metal-intermediate-metal waveguide, and a plurality of micro-ring resonators. The metal substrate has an upper surface. The metal-intermediate-metal waveguide is etched on the uppersurface. The micro-ring resonators are etched on the two sides of the metal-intermediate-metal waveguide respectively. The metal-intermediate-metal waveguide and the micro-ring resonators have the same height, and the highest position is higher than or is flush with the surface of the metal substrate. By means of the coupling structure of the micro-ring resonators and the metal-intermediate-metal(MIM) waveguide, SPPs wave guiding can be perfectly supported, the high coupling resonance effect is achieved, and the optical logic device is suitable for high-performance optical logic treatment; with the micro-ring resonators as input ports, multibit signal input control can be realized only by increasing the number of the micro-ring resonators; the optical logic device has high sensitivity tothe refractive index of the resonators, great contrast is realized in the height states of output ports, and the logic operation bit error rate is reduced.

The invention provides a control swap gate optical logic device based on micro-ring resonators. The control swap gate optical logic device is characterized in that the control swap gate optical logic device is composed of four micro-ring resonators MRR made of a semiconductor material on an insulator and five Y-branch couplers, wherein three inputs are electrical signals to be operated and one continuous optical signal located at an operating wavelength position, an output result is an optical signal obtained after control swap gate calculation is conducted on the electrical signals, the optical signal can be transmitted in an optical fiber and directedly undergoes next-stage optical information processing. The control swap gate optical logic device is provided with the three electric pulse sequence inputs to be calculated, and an output is an optical pulse sequence obtained after calculation. A control swap gate optical logic device manufacturing process is completely compatible with a COMS process, so that the device is small in size, high in speed, low in power consumption and convenient to integrate and is hopeful to play the important role in a photon computer.

The invention provides a silicon-based optical Peres gate reversible logic device based on a micro-ring resonator, and belongs to the technical field of optical logic calculation. The device comprisesfive micro-ring resonators and two Y-branch couplers. According to the invention, the optical Peres gate reversible logic device has three to-be-calculated electric pulse sequence inputs, and the output is calculated light pulse sequence; and the manufacturing process of the device is completely compatible with a COMS process, so that the device is small in size, high in speed, low in power consumption and convenient to integrate, and is expected to play an important role in a photon computer.

The invention discloses an exclusive OR and exclusive NOR logic operation unit based on an optical mode. The exclusive OR and exclusive NOR logic operation unit comprises a set of input waveguide andoutput waveguide which support multi-mode transmission and two sets of dynamic mode conversion devices which are controlled by operand signals. A single-mode input light source serves as a carrier andsequentially passes through the two sets of mode conversion devices, whether the mode conversion devices convert an input mode into another mode or not is controlled through each operand, and the component of each mode is detected at the output waveguide, and exclusive OR and exclusive NOR logic operation results can be obtained at the same time through one-time light propagation and collection.The logic operation unit can use different waveguide modes to calculate within the same wavelength, so that the cost of the whole optical logic loop is reduced; and meanwhile, the method is insensitive to input wavelength and ambient temperature change. The unit can be realized by adopting various material platforms, and parallel logic operation of electro-optic and all-optical exclusive OR and exclusive NOR can be realized according to different modulation modes.

The invention discloses an optical clock generator. The optical clock generator comprises a nonlinear cavity unit, a cross-shaped waveguide logic gate unit and a time delayer unit. The optical clock generator is of a six-port photonic crystal structure and is composed of two reference light signal input ends, a feedback signal input end, a system signal and feedback signal output end and two idle ports. The output end of the cross-shaped waveguide logic gate unit is connected with the input end of the nonlinear cavity unit, the system signal output end of the nonlinear cavity unit is connected with the input end of the time delayer unit, the output end of the time delayer unit is connected with the input end of the cross-shaped waveguide logic gate unit, a signal output end is connected with a two-branch waveguide, one end of the two-branch waveguide serves as a system output port, the other end of the two-branch waveguide serves as a feedback signal output port connected to the input end of the time delayer unit, and the time delayer unit performs time delay on an input signal which is output to a feedback signal input end. The optical clock generator and other optical logic elements are easy to integrate.

The invention provides an optical waveguide micro-ring resonant cavity-based all-optical logic gate, which comprises an optical waveguide (1), an optical waveguide micro-ring resonant cavity (2), a substrate (3), a buffer layer (4) as well as an incoming optical fiber (5) and an outgoing optical fiber (6), wherein the optical waveguide (1) is capable of inputting signal optical pulse and controlling optical pulse; the incoming optical fiber (5) and the outgoing optical fiber (6) are connected with the optical waveguide (1); and the optical waveguide micro-ring resonant cavity (2) is located in the middle position between an input end and an output end of the optical waveguide (1). The invention also discloses a method for realizing logic operation by utilizing the all-optical logic gate. The invention designs and provides an optical logic operation device, which is capable of executing optical logic operation, simple in structure, low in switch threshold value, low in power consumption, rapid in speed, wider in application range and capable of being realized on a semiconductor material substrate by using an integrated manufacturing process. Compared with the prior optical logic devices, the optical logic operation device of the invention is more convenient and practical and can be widely applied in all-optical computation, all-optical communication and integrated optical circuit systems.

An optical linear feedback circuit has an optical loop delay path (10) for recirculating a sequence of optical signals, and an output path for outputting delayed optical signals after circulating one or more times around the loop. A selector (50) is provided for selecting one or more of the delayed optical signals from the sequence, and an optical logic circuit (20) is coupled to carry out a logical operation on the selected delayed optical signals to create an optical feedback signal which is coupled to the optical loop delay path, so that the optical feedback signal can be added to the sequence of optical signals already circulating. By recirculating around a loop, each round trip can be regarded as equivalent to a shift of a shift register, so longer sequences can be built up without needing an additional storage cell for each shift function.

The invention relates to a path self-adaptive rapid acquisition method under a logic road network model. The path self-adaptive rapid acquisition method comprises the steps that all the attributes of the optimal vector path are set according to the requirements; the optimal logic path is expanded level by level so that a final path is acquired: a round of traversal and expansion are performed on the l-level optimal logic path with the path elements acting as units so that the process of the (l+1)-level optimal logic path is obtained, and the path elements are expanded when the path elements are corresponding to logic direct connection; the path elements do not need to be expanded when the path elements are corresponding to original connection; the rapid mapping model of the optical logic path is set, and the storage data structure of logic road network path rapid mapping information is set according to the rapid mapping model; and shape point ranges of the most reasonable path display part are obtained through combination of road segment number sequences, and finally rapid self-adaptive display of the optimal vector path is realized. The display effect is guaranteed and the display data volume is reduced, and optimal path display speed is accelerated.

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 a first beam and a second beam, wherein the first beam and the second beam have an identical or nearly identical relative polarization angle that equals or nearly equals the relative polarization angle of the input polarized beam. The apparatus and method further polarize at a first relative polarization angle the first beam and polarize at a second relative polarization angle the second beam. The ratio of the amplitudes of two perpendicular polarization components of the input polarized beam is one or nearly one and the difference between the first relative polarization angle and the second relative polarization angle is 180 degrees or nearly 180 degrees. Furthermore, the relative polarization angle of the input polarized beam equals or nearly equals either the first relative polarization angle or the second relative polarization angle.

The invention belongs to the technical field of liquid crystal materials, in particular to a method for controlling a liquid crystal reflection color by using fluorine substituted azobenzene. The fluorine substituted azobenzene used in the method has the characteristic of multi-wavelength light response, and the cis-trans isomerization reaction with different degrees of the fluorine substituted azobenzene can be carried out under the irradiation of different wavelength lights. According to the method, the fluorine substituted azobenzene, a chiral dopant and a liquid crystal matrix are evenly mixed in a certain proportion, and then the mixture is poured into a liquid crystal cell. By changing a wavelength of a stimulus light source, the precise regulation of the reflection color of the liquid crystal cell to be red, green and blue can be realized. The control method uses the light steady state to control the liquid crystal reflection color, and the limitation of a traditional method that the transition state is used to control the reflection color is broken through. The method can be applied to numerous fields, such as liquid crystal display, optical logic switch, optical storage, anti-counterfeiting, and the like.

The invention discloses a method for achieving all-optical logic and operation based on light absorption bleaching effect. The steps of the method comprise that an incidence light beam A and an incidence light beam B are respectively used as input signals of optical logic and operation to be lighted on a semi-conductor crystal, a receiver is arranged on the outgoing direction of the semi-conductor crystal, transmission light C is used as an output signal to be detected and acquired by the receiver, if only the light beam B exists, the light beam A does not exist, the bleaching effect is achieved, the transmission light C received by the receiver is smaller than a light intensity threshold value with the logic true, if and only if the light beam A and the light beam B irradiate on the same zone, based on the bleaching effect, the transmission light C received by the receiver is larger than the light intensity threshold value with the logic true. The method does not rely on resonance, polarization, interference, a photonic crystal or optical fiber nonlinear effect and other mechanisms, a system is simple, stability is good, and integration level is high.

The invention discloses an improved self-selecting route address coding method for ensuring QOS in an all-optical packet network. The self-selecting route address coding method for ensuring QOS in the all-optical packet network comprises the steps of: adding coded address and priority information at an edge node according to destination address information of a data packet; and locking the output port of the data packet by performing associated operation at each node. The self-selecting route address coding method of the invention has the advantages that: the method is easy to be realized through a simple single-bit optical logic device, is very practical, overcomes the drawback that the conventional method is only suitable for static network topology, can meet the dynamic variation requirement of the conventional network, and greatly increases expandability and flexibility.

The invention relates to a single-mode half microdisk resonant cavity which comprises a closed inner contour line and a closed outer contour line. A waveguide (3) is arranged between the inner contour line and the outer contour line. The inner contour line is composed of sector connecting areas (2) used for being in electrical connection or mechanical connection and a transition curve (1) which achieves the purpose that the waveguide width is gradually changed from narrow to wide, and the angle of each sector connecting area (2) is smaller than or equal to 270 degrees and larger than zero degree. Each connecting area (2) maximally allows a connecting structure within the range of 270 degrees, so that connecting resistance is small, and high-speed resonance can be achieved. The transition curve (1) can guarantee the fact that a high order mode and a leakage mode are not excited while enabling the waveguide of the resonant cavity to be gradually widened, and cavity loss is lowered. The half microdisk resonant cavity is in a single-mode work mode, the range of free spectrum can not be reduced, the strict demand for a light field mode of application such as filtering and modulation can be met, the half microdisk resonant cavity has multiple potential purposes in an integrated field and comprises a low energy consumption and high speed electrooptical modulator, an optical logic operation device, an active power filter, a heating / tuning unit, a thermo-optic switch, an electrical / mechanical / optical transducer and the like which need electrical or mechanical connection.

The invention relates to the technical field of optical logic elements, in particular to an optical logic element for photoelectric digital logic operation and a logic operation method thereof, and the element comprises a driving part which is used for providing driving for a photoelectric integrated part, generating digital modulation information capable of being recognized by the photoelectric integrated part and reading an electric signal output by the photoelectric integrated part; and a photoelectric integrated part used for carrying the digital modulation information input by the driving part by using the coherent optical signal, carrying out digital logic operation on the coherent optical signal in a preset optical diffraction neural network to obtain an operation result, generating an electric signal from the operation result based on a digital logic mapping relation, and outputting the electric signal; and using the driving part used for reading the electric signal and outputting an operation result. The embodiment of the invention has higher unit energy consumption calculation performance, different special logic operations can be reconfigured and designed in batches, the operation scale is large, and the modulation rate is high.

The invention discloses a low-threshold optical bistable device based on a photonic crystal topological state. The low threshold optical bistable device based on the photonic crystal topology state isformed by combining two different kinds of photonic crystals PC1 and PC2 with a single layer of graphene, the photonic crystals PC1 and PC2 are are formed by periodically and alternatively arraying media a and media b, and the graphene layer is located on an interface of the photonic crystals PC1 and PC2. According to the low-threshold optical bistable device based on the photonic crystal topological state, graphene with continuous and adjustable conductivity and strong third-order nonlinear conductivity characteristics is adopted, thus the optical bistable device has the advantages that thedynamism is adjustable, and the threshold value is low, and the low threshold optical bistable device based on the photonic crystal topology state can be applied to manufacturing of an all-optical logic gate, an optical logic device, an optical modulator, an optical switch, and the like.

The invention provides an electro-optical logic NOR door. The electro-optical logic NOR door is characterized in that the electro-optical logic NOR door has two layers in the vertical direction, one layer is a base board, and the other layer comprises a pair of electrodes, light wave paths, and the rest of cladding, wherein the light wave paths constitute at least two couplers defined as the coupler 1 and the coupler 3 respectively, the coupler 1 achieves an electroinduced photorefractive effect by voltage control applied by the electrodes, and the coupler 3 transmits pumping light to achieve a light-induced truncation effect. The electroinduced photorefractive effect is combined with the light-induced truncation effect for the first time, and the electro-optical logic door needs no high power threshold requirement, is integrated, and complete logical operation of electrical signals and optical signals directly is obtained.

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 a first beam and a second beam, wherein the first beam and the second beam have an identical or nearly identical relative polarization angle that equals or nearly equals the relative polarization angle of the input polarized beam. The apparatus and method further polarize at a first relative polarization angle the first beam and polarize at a second relative polarization angle the second beam. The ratio of the amplitudes of two perpendicular polarization components of the input polarized beam is one or nearly one and the difference between the first relative polarization angle and the second relative polarization angle is 180 degrees or nearly 180 degrees. Furthermore, the relative polarization angle of the input polarized beam equals or nearly equals either the first relative polarization angle or the second relative polarization angle.

An optical logic device performs a logic operation on a plurality of input light signals. The optical logic device has a photoelectric conversion portion, in which photoreceivers for receiving input light signals are provided in parallel, that outputs an electric signal obtained by adding up outputs of the photoreceivers, and a comparator that compares a voltage level of the electric signal outputted from the photoelectric conversion portion with a predetermined voltage level.

The present invention discloses a photonic crystal (PhC) all-optical AND-transformation logic gate, which comprises a PhC-structure unit, an optical-switch unit, a wave-absorbing load, a NOT-logic gate and a D-type flip-flop; two intermediate-signal output ports of the optical-switch unit are respectively connected with the intermediate-signal input port and the wave-absorbing load of the PhC-structure unit; a clock-signal CP input port is connected with three-branch waveguide, and three output ports are respectively connected with first clock-signal CP input port of the optical-switch unit, second clock-signal CP input port of the PhC-structure unit and the NOT-logic-gate input port; the NOT-logic-gate output port is connected with third clock-signal CP input port of the D-type flip-flop; the signal-output port of the PhC-structure unit is connected with the D-signal input port of the D-type flip-flop. The structure of the present invention is compact in structure and ease of integration with other optical-logic elements.

The invention discloses a photonic crystal all-optical OR conversion logic gate which comprises a photonic crystal structural unit, an optical switch unit, a reference light source, a wave-absorbing load and a D trigger unit, wherein two system signal input ends of the optical switch unit are connected with a logic signal X1 and a logic signal X2; the reference light source is connected with a reference light input end of the optical switch unit; three middle signal output ends of the optical switch unit are respectively connected with two middle signal input ends of the photonic crystal structural unit and the wave-absorbing load; a clock control signal CP is connected with a clock signal CP input end of the optical switch unit and a clock signal input end of the D trigger unit through the input ends of a two-branch waveguide; the output end of the photonic crystal structural unit is connected with a D signal input end of the D trigger unit. The photonic crystal all-optical OR conversion logic gate has the advantages of compact structure, high operating rate, high anti-jamming capability and easiness in integration with other optical logic elements.

The invention discloses a method and device for generating a first-order ultra wide band signal with adjustable single-wave-length full gloss. Gaussian optical pulse with the positive polarity is utilized for obtaining Gaussian optical pulse with the positive polarity and the negative polarity on the same wave length through optical logic inverters of double ports, and after delaying and combination, the full gloss first-order ultra wide band signal with the single-wave-length is output. The pulse width and radio frequency spectrum of the generated signal are turnable, and the positive polarity and the negative polarity of pulse can be switched. The device is simple in structure, convenient to operate and low in implementing cost, can achieve the functions of the turnable pulse width, a turnable radio frequency spectrum and the switchable pulse polarity, and achieves better practical value and practical operability.

The invention discloses an optical logic "NOT" gate operation system based on time lens imaging. The system comprises an extended code subsystem, a time lens imaging inversion subsystem and a shrink code subsystem. The extended code subsystem enables conversion from "1" to "10" and from "0" to "01". The time lens imaging inversion subsystem realizes inversion of a pulse pair, that is, "10" is inverted to "01", and "01" is inverted to "10". The shrink code subsystem realizes that "01" is restored to "0" and "10" is restored to "1." After the combined effects of the three parts in the system provided by the invention, the logic "NOT" gate calculation is achieved, that is "1" is converted to "0" and "0" is converted to "1". The logic "NOT" calculation system is greatly simplified, and the operation rate is greatly increased.

Logical operations are implemented using polarization-based logic level representation. An input polarized beam is split into a first beam and a second beam. The first beam is polarized at a first relative polarization angle and the second beam is polarized at a second relative polarization angle. The ratio of the amplitudes of two perpendicular polarization components of the input polarized beam is one or nearly one and the difference between the first relative polarization angle and the second relative polarization angle is 180 degrees or nearly 180 degrees. The relative polarization angle of the input polarized beam equals or nearly equals either the first relative polarization angle or the second relative polarization angle.