7 results about "Waveguide grating router" patented technology

A photonic tensor multiplier system multiplies a first tensor with a second matrix. It includes a splitter that receives light at N wavelengths from a light source and divides the light into N separate beams. N first optical modulators modulate the beams with time-multiplexed column vector signals from the second matrix. An arrayed waveguide grating router (AWGR) processes the N modulated signals. M of the AWGR output signals are split into K x M beams and modulated again by K x M second optical modulators that modulate with time-division-multiplexed row vectors of the first tensor. K x M demultiplexers each output signals at the N different wavelengths. An integrator coupled with a demultiplexer output integrates the signal to obtain an accumulated multiplied signal, representing a value of the photonic tensor multiplier output tensor. Optical components of the system may be integrated in one or more photonic ICs (PICs).

The invention provides an all-optical switching method and system for all-to-all set communication acceleration, and the method is characterized in that the method comprises the steps: obtaining a plurality of servers to be communicated, each server comprises an all-interconnection network interface and an all-interconnection optical transceiver module, and each all-interconnection network interface is connected to an all-optical switching network through the all-interconnection optical transceiver module; all the servers are interconnected through the circulating waveguide grating router in the all-optical switching network, the circulating waveguide grating router is based on a switching mechanism of wavelength routing, and the all-interconnection network interface of each server generates multiple paths of wavelength signals which are switched to the all-interconnection network interface of the corresponding server through the circulating waveguide grating router. According to the invention, the global all-to-all set communication can be completed by at most two hops, and the acceleration of all-to-all set communication is realized.

The invention provides a photoelectric collaborative data high-speed switching system. The photoelectric collaborative data high-speed switching system comprises an electric processing unit, an optical switching unit and an optical switching controller, the electric processing unit receives a data frame, splits the data frame into a plurality of cell slices, and allocates a cache address to each cell slice; the optical switching controller receives the request sending message, inquires wavelength scheduling configuration information according to destination address information in the request sending message, and generates a wavelength scheduling control instruction; the optical switching unit receives the wavelength scheduling control instruction, controls the conduction state of the controllable optical switch array according to the wavelength scheduling control instruction, and establishes an optical channel from a source end to a destination end by using the wavelength routing characteristic of the arrayed waveguide grating router; and the electric processing unit is also integrated with a remote direct memory access unit which outputs the cache address and the data length of each cell slice after receiving the sending permission message, so that the target-end electric processing unit directly reads the cell slices from the source-end cache and recombines the cell slices into data frames.

The invention discloses an array waveguide grating and a router, relates to the technical field of signal transmission, and aims to solve the problems of how to reduce the optical loss of the array waveguide grating router and improve the transmission efficiency of optical signals. The array waveguide grating comprises a first waveguide structure, a second waveguide structure and a connecting waveguide, the connecting waveguide comprises a first waveguide section and a second waveguide section which are connected in sequence, the first waveguide section is connected with the first waveguide structure, and the second waveguide section is connected with the second waveguide structure; the width of the first waveguide section and the width of the second waveguide section are gradually reduced in the direction from the first waveguide section to the second waveguide section, the two surfaces of the first waveguide section in the width direction are first cambered surfaces, and the two surfaces of the second waveguide section in the width direction are first planes. The present application is used for transmitting signals.

Methods, systems, and apparatuses for quantum key distribution (QKD) in a passive optical network (PON) are described. The PON can be a point-to-multipoint system and can include a central node communicating with a plurality of remote nodes. In some cases, each remote node can include a QKD transmitter configured to generate quantum pulses indicative of a quantum key, a synchronization pulse generator configured to generate timing indications of the quantum pulses, and a filter configured to output the quantum pulses and the timing indications to the central node via optical components (e.g., an optical splitter, a circulator arrayed waveguide grating (AWG) router). The central node can receive the timing indications and the quantum pulses from the plurality of remote nodes. Accordingly, the central node and the remote nodes can be configured to communicate data encrypted using the quantum key.

A photonic matrix multiplier multiplies an MxP first matrix with a PxN second matrix. The multiplier includes a splitter that receives light including M different wavelengths into M separate light beams. M first optical modulators modulate the M light beams with time-multiplexed row vectors of the first matrix. An arrayed waveguide grating router (AWGR) processes the output signals of the M first optical modulators and outputs N processed light signals. N second optical modulators modulate the N processed light signals with time-multiplexed column vectors of the second matrix. N demultiplexers separate the N second optical modulator output signals in light beams at each of the M different wavelengths. Integrators integrate demultiplexer output signals to obtain multiplied and accumulated signals.