36 results about "Optical router" patented technology

Described are various configurations for transmitting and receiving optical light using a shared path ranging system. The shared path ranging system can include an optical router (e.g., an optical coupler) coupled to a grating to transmit light to a physical object and receive light reflected by the physical object. The shared path ranging system can include rows of routers and gratings in a two-dimensional configuration to transmit and receive light for ranging purposes.

The invention relates to an optical fiber communication technology, discloses a high-expansion FTTR whole-house optical fiber access system, and solves the problems of weak expansibility and high networking cost of the existing P2MP scheme. The access system comprises a main gateway device and a plurality of sub-network devices. At least one piece of sub-network equipment is deployed in each room; the sub-network equipment comprises sub-gateway equipment or an optical switch or an optical router; the main gateway device is connected with an external internet and a part of the sub-network devices through optical fibers. The other sub-network devices are connected with the main gateway device in a cascading mode, and the optical switch and the optical router serve as expansion devices to be connected into the upper-level sub-network device; and the main gateway device and each sub-network device are connected with a communication device of a user through a communication interface.

Improvements in and relating to Photonics An optical switch for receiving an optical signal from an optical signal source and for outputting the optical signal comprises an optical router configured for routing the optical signal conditional on the detection of a single photon. The optical router comprises and optical resonator, a first optical pathway part comprising the optical resonator, and a second optical pathway part. An optical input coupling part receives the optical signal for coupling the received optical signal into the first optical pathway part and into the second optical pathway part. An optical modulator coupled to a single-photon detector unit outputs a detection signal in response to the detection of a single photon. The optical modulator is configured, in response to the detection signal, to modulate the refractive index of the optical resonator to change an optical phase shift incurred by the optical signal upon passage through the optical resonator such that an optical interference results in a routing of the output optical signal to one of the first and second optical pathway parts selected conditional on the detection of a single photon.

This application belongs to the field of on-chip optical communication, specifically disclosing a fully connected reconfigurable optical router. This application proposes four tunable microring units with different adjustable optical paths. A first joint structure consisting of a first tunable microring unit – a fourth tunable microring unit – a third tunable microring unit – a second tunable microring unit located in the first row, and a second joint structure consisting of a fourth tunable microring unit – a second tunable microring unit – a first tunable microring unit – a third tunable microring unit located in the second row, are combined using a shared waveguide structure and a reconfigurable microring array design. This allows each port to function as either an input or output in different configurations, with the port role dynamically determined by the microring state. This achieves full port connectivity, overcoming the routing limitations of existing fixed input / output ports. This full connectivity mechanism significantly improves port flexibility, giving the system greater freedom in path arrangement, scheduling, and topology expansion.

An all-optical switch 1 comprises an optical router which receives an optical signal and routes the signal conditional on single-photon detection. The router comprises an optical resonator 14, a first

An optical router configured to facilitate communication between a satellite communication constellation and a plurality of satellite nodes is provided. The optical router comprises an upstream interface configured to facilitate communication over an upstream communication link to the satellite communication constellation, a downstream interface configured to simultaneously communicate via a single optical aperture with the satellite nodes over a plurality of downstream optical communication links in different directions, the plurality of optical communication links being established, and a controller to direct operation of the optical router.

The invention provides a compact and efficient photon convolutional neural network accelerator based on a dual-function microring resonator, comprising: a plurality of tiles, each tile communicating with an optical router; the tile comprising: an optical matrix vector multiplication module and a nonlinear module; the optical matrix vector multiplication module comprising: an input signal module, an optical matrix vector operation module and an output signal module; the input signal module comprising: a laser array, a wavelength division multiplexer and an optical splitter; the laser array generates n continuous optical signals of different wavelengths; the wavelength division multiplexer multiplexes the n continuous optical signals of different wavelengths into the same waveguide to obtain a multiplexed optical signal; the optical splitter performs optical splitting on the multiplexed optical signal to obtain k-way optical splitting signals; the optical matrix vector operation module modulates the input optical splitting signal through an embedded PN junction, and converts the k-way modulated optical signal into an electrical signal through an added GST analog weight; the nonlinear module performs nonlinear operation on the k electrical signals to obtain a calculation result.

A qubit decoding device (200) is configured to receive a photon having a qubit encoded with a property of the photon, the qubit decoding device (200) comprising a demodulation device (210). The demodulation device (210) comprises an optical modulator (212) configurable to randomly apply one of a plurality of modulation values ​​for decoding the qubit to the property of the photon, and an optical router (214, 414) for routing the photon according to the qubit. The qubit decoding device (200) further comprises an optical delay device (220), the optical delay device (220) comprising an optical combiner (222), a first optical path (224) from the optical router to the optical combiner, and a second optical path (226) from the optical router to the optical combiner. The second optical path (226) has an optical path length different from that of the first optical path to introduce a time delay between the optical paths. The qubit decoding device (200) further includes a detection device (230) configured to detect the photon and operable to determine whether the detected photon is delayed relative to a reference time and to determine the qubit based on the determined time delay.

Optical router for distributing optical signals, including at least three input / output ports, each designed to be optic ally connected to a transceiver, each input / output port comprising an optical routing system connected to a plurality of optical paths, each of the optical paths also being connected to another of the optical routing systems so as to optically connect the input / output port to each of the other input / output ports, the optical routing system being configured to passively direct an optical signal received by the input / output port into one of the optical paths chosen on the basis of the wavelength of said optical signal.

Embodiments of the present invention provide a downlink frame length processing method and apparatus, a storage medium, and an electronic apparatus. The above method includes: compressing, by an optical gateway, the downlink frame length according to target parameters, wherein the target parameters include at least one of the following: a service type of the optical router and a parameter for determining centralized scheduling; and sending, by the optical gateway, the compressed downlink frame length to the optical router. By means of the present invention, the problem in the related art that the optical gateway cannot compress the downlink frame length is solved, and the technical effect of compressing the downlink frame length is achieved.

This invention provides a networking system, networking method, apparatus, device, and computer storage medium. The system includes a network management server, and an optical gateway and an optical router connected to the network management server. The optical gateway includes a first uplink optical interface and multiple downlink optical interfaces. One end of the first uplink optical interface is connected to a metropolitan area network (MAN), and the other end is connected to the multiple downlink optical interfaces. The optical router includes multiple second uplink optical interfaces and multiple Ethernet ports. The second uplink optical interfaces are correspondingly connected to the downlink optical interfaces, and the multiple second uplink optical interfaces and multiple Ethernet ports are connected together. This apparatus can reduce the probability of service interruptions due to link disruptions.

Embodiments of the present disclosure provide a method and apparatus for downlink frame length processing, a storage medium, and an electronic apparatus. The above method includes: compressing, by an optical gateway, the downlink frame length according to target parameters, wherein the target parameters include at least one of the following: a service type of the optical router and a parameter for determining centralized scheduling; and sending, by the optical gateway, the compressed downlink frame length to the optical router. By means of the present disclosure, the problem in the related art that the optical gateway cannot compress the downlink frame length is solved, and the technical effect of compressing the downlink frame length is achieved.

Disclosed in the present application are bandwidth resource allocation methods, an apparatus, a terminal, an optical network unit, and a storage medium. A bandwidth resource allocation method of the present application comprises: acquiring a bandwidth resource of a downlink optical port of an optical network unit, acquiring wireless bandwidth resources amongst optical routers, and acquiring a bandwidth resource demand for east-west communication (S201); and, according to gaps between the bandwidth resource of the downlink optical port of the optical network unit and said bandwidth resource demand and between the wireless bandwidth resources east-west amongst the optical routers and said bandwidth resource demand, dynamically allocating a target bandwidth resource for east-west communication (S202).

A wearable display system includes a light projection system having one or more emissive micro-displays, e.g., micro-LED displays. The light projection system projects time-multiplexed left-eye and right-eye images, which pass through an optical router having a polarizer and a switchable polarization rotator. The optical router is synchronized with the generation of images by the light projection system to impart a first polarization to left-eye images and a second different polarization to right-eye images. Light of the first polarization is incoupled into an eyepiece having one or more waveguides for outputting light to one of the left and right eyes, while light of the second polarization may be incoupled into another eyepiece having one or more waveguides for outputting light to the other of the left and right eyes. Each eyepiece may output incoupled light with variable amounts of wavefront divergence, to elicit different accommodation responses from the user's eyes.

The invention discloses a pixel-level high-efficiency metasurface spectrum sorting device for multispectral imaging and a design method. The device comprises a substrate, a metasurface filter and a metasurface optical router which are sequentially arranged in the direction of an optical path. And the metasurface filter structure and the metasurface optical router structure are subjected to optimization design respectively. According to the invention, the Fabry-Perot resonant cavity which is wide in free spectral range, small in full width at half maximum at a peak wavelength and high in transmittance and the free-shaped metasurface optical router structure which is high in routing efficiency are creatively combined, so that a pixel-level high-efficiency metasurface spectrum sorting structure is realized, and low crosstalk and high efficiency are realized. According to the invention, the contradiction that pixel-level integration and high imaging quality of a traditional multispectral imaging structure cannot be achieved at the same time is solved, and a novel structure and a novel design method are provided for pixel-level high-efficiency detection for multispectral imaging.

A wearable display system includes a light projection system having one or more emissive micro-displays, e.g., micro-LED displays. The light projection system projects time-multiplexed left-eye and right-eye images, which pass through an optical router having a polarizer and a switchable polarization rotator. The optical router is synchronized with the generation of images by the light projection system to impart a first polarization to left-eye images and a second different polarization to right-eye images. Light of the first polarization is incoupled into an eyepiece having one or more waveguides for outputting light to one of the left and right eyes, while light of the second polarization may be incoupled into another eyepiece having one or more waveguides for outputting light to the other of the left and right eyes. Each eyepiece may output incoupled light with variable amounts of wavefront divergence, to elicit different accommodation responses from the user's eyes.

The invention discloses a 4 * 4 non-blocking optical router based on graphene-silicon waveguide. The 4 * 4 non-blocking optical router comprises a SiO2 substrate and 12 graphene-silicon waveguide micro-ring optical switch units, twelve graphene-silicon waveguide micro-ring optical switches are mutually connected to form a 4 * 4 matrix structure, so that four input ports and four output ports are formed. Each graphene-silicon waveguide micro-ring optical switch is composed of a straight waveguide, a micro-ring silicon waveguide, a cross coupling waveguide and a graphene modulation area, and the structural size and the performance parameter of each graphene-silicon waveguide micro-ring optical switch are kept consistent. Different voltages are applied to the electrodes of the graphene-silicon waveguide micro-ring optical switch, so that the Fermi level of graphene is changed, the effective refractive index of graphene-silicon waveguide is dynamically adjusted, the resonance state of the micro-ring is changed, the transmission path of the graphene-silicon waveguide micro-ring optical switch is changed, and finally the wavelength selective optical routing function is achieved. The invention has the advantages of simple structure, small insertion loss and good integration level.

The invention discloses a tunable optical router based on a graphene-silicon waveguide. The tunable optical router comprises a straight waveguide, a micro-ring silicon waveguide, a cross coupling waveguide and a graphene modulation area. A graphene modulation area is integrated in a partial area of the micro-ring silicon waveguide, a graphene layer of the graphene modulation area is stacked into double-layer graphene through a mechanical stripping method and extends to the position below a metal electrode, the Fermi level of the graphene is changed by applying voltage to the electrode, the effective refractive index of the graphene-silicon waveguide can be dynamically adjusted, and the refractive index of the graphene-silicon waveguide can be dynamically adjusted. Therefore, the resonance state of the micro-ring is changed, and finally the wavelength selective optical routing function is realized. According to the device, through a mode of embedding graphene and an insulating material, on the basis of maintaining good compatibility with a traditional CMOS (Complementary Metal-Oxide-Semiconductor Transistor) manufacturing process, innovative expansion of device functions is realized, and meanwhile, the dynamic regulation and control requirements of a complex wavelength division multiplexing system can also be met.

The invention provides a Q-learning algorithm-based adaptive fault-tolerant routing planning method for a faulty on-chip optical network. The method comprises the following steps: S1, constructing a network model according to the state of an optical router in the network and a network topology structure, and defining a network path reward value evaluation model; s2, calculating a corresponding path reward value from a current node to an adjacent node according to the network path reward value evaluation model, determining an optimal next node from the path reward value, updating a Q table, and enabling the node to be the current node; s3, if the current node is a target node, ending the calculation of this round, and obtaining a planned path and a reward value of the path; if the current node is located in the fault domain, ending the calculation; if not, repeating the steps S2-S3; and S4, obtaining a plurality of planned paths according to a preset learning round, and determining an optimal path from the planned paths. According to the method provided by the invention, the optimal path is selected from the paths which are prevented from passing through the fault domain through the Q-learning algorithm, so that the network performance can be effectively improved.

1. Name of the product in this design: Sub-Gateway (VIII). 2. Application of this design: This design is used as a secondary gateway optical router in FTTR all-optical networking. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model.

1. Name of the design product: From the gateway (FTTR optical router). 2. Use of the design product: For the conversion of optical and electrical signals and the conversion of interface protocols. 3. Design features of the design product: In shape. 4. Picture or photo best indicating the design features: Perspective view 1.

The invention provides a fault-tolerant on-chip optical router for a three-dimensional optical network. The fault-tolerant on-chip optical router comprises 7 input ports, 7 output ports, 14 optical waveguides and 70 micro-ring resonators, each input port is connected with two different output ports through two optical waveguides, and the two optical waveguides connected with each input port and other optical waveguides form a plurality of cross points; a main micro-ring resonator and a standby micro-ring resonator are arranged between the two connected optical waveguides in each port, and the main micro-ring resonators or the standby micro-ring resonators are arranged between part of the cross points and part of the optical waveguides respectively, so that a dual-path routing structure composed of a main path and a standby path is formed. When the main micro-ring resonator on the main path breaks down, the main path is switched to the standby path. Through a dual-path routing structure, the fault-tolerant capability is increased while non-blocking communication in the three-dimensional optical network is ensured, and the robustness of the system is further improved.

The application provides a multi-service multiplexing multi-wavelength optical fiber router, comprising: a multi-wavelength multi-channel adaptation module having single-fiber three-wave access adaptation function and double-fiber three-wave access adaptation function; a unidirectional optical-electric conversion module composed of a unidirectional ROSA and a receiving circuit, used for realizing receiving and optical-to-electric conversion of unidirectional optical signals of broadcast streams; a unidirectional service protocol conversion unit, used for realizing optical-electric conversion receiving, buffering, protocol conversion and forwarding of broadcast services; a bidirectional optical-electric conversion transceiver module, used for realizing driving of a transmitting laser and buffering and amplification of a received signal; a WAN interface module, a routing unit, a WiFi module and a LAN interface module. The above scheme solves the problems of two local area networks in a user's home, inconvenient operation and high household access cost caused by the fact that the cable television service cannot be accessed to the home router when the communication service, the broadband Internet service and the cable television service are simultaneously accessed to the home.

In one embodiment, an optical network includes a plurality of converged IP and optical routers and a plurality of optical links interconnecting the plurality of converged IP and optical routers. The optical network further includes a network controller configured to broadcast a link quality metric (LQM) to the plurality of converged IP and optical routers. The LQM defines a link quality associated with each optical link of the plurality of optical links, wherein data traffic mapping is performed by the plurality of converged IP and optical routers using the broadcast LQM.

An optical router configured to facilitate communication between a satellite constellation and a plurality of satellite nodes is provided, the optical router comprising: an upstream interface configured to facilitate communication via an upstream communication link to the satellite constellation, a downstream interface configured to simultaneously communicate with the satellite node via a single optical aperture via multiple downstream optical communication links in different directions, the downstream interface through which the multiple optical communication links are established, and a controller for directing operation of the optical router.

The invention discloses a bandwidth-controllable topological optical filter without an external magnetic field. According to the device, air, isotropic media and topological continuous media are in direct contact to form a topological optical filter which does not need an external magnetic field and is controllable in bandwidth. The topological continuous medium has a chiral surface state in the same transmission direction in the air and at the boundary of the isotropic medium. By introducing a plurality of structural defects, the scattering suppression transmission characteristic of the surface wave can be tested. By changing the relative dielectric constant epsilon of isotropic media in the topological optical filter, the topological optical filter with adjustable bandwidth and scattering suppression can be realized. The method is suitable for bandwidth-adjustable topological devices such as topological optical filters, topological optical isolators, topological optical waveguides and topological optical routers, and higher flexibility is provided for designing bandwidth-adjustable multi-channel topological photonic devices without additional magnetic fields.

The invention discloses a four-port optical router based on graphene-silicon waveguide micro-ring resonators. The four-port optical router comprises ten graphene-silicon waveguide micro-ring resonators, five optical waveguides, four input ports, four output ports and two terminal nodes. Each graphene-silicon waveguide micro-ring resonator is composed of a micro-ring silicon waveguide and a graphene modulation area, and has the same resonant wavelength; by utilizing the resonance characteristic of the micro-ring resonator to a specific wavelength and respectively applying 0.84 V and 3.96 V voltages to the metal electrode of the graphene-silicon waveguide micro-ring resonator, the Fermi level of graphene can be changed, and then the resonance state of the micro-ring is changed, so that the transmission path of the graphene-silicon waveguide micro-ring optical switch is changed, and the transmission efficiency of the graphene-silicon waveguide micro-ring optical switch is improved. The non-blocking routing exchange of the four bidirectional ports is realized; the design not only optimizes the structure of the optical router and reduces the cost, but also significantly reduces the insertion loss and crosstalk.

A wearable display system includes a light projection system having one or more emissive micro-displays, e.g., micro-LED displays. The light projection system projects time-multiplexed left-eye and right-eye images, which pass through an optical router having a polarizer and a switchable polarization rotator. The optical router is synchronized with the generation of images by the light projection system to impart a first polarization to left-eye images and a second different polarization to right-eye images. Light of the first polarization is incoupled into an eyepiece having one or more waveguides for outputting light to one of the left and right eyes, while light of the second polarization may be incoupled into another eyepiece having one or more waveguides for outputting light to the other of the left and right eyes. Each eyepiece may output incoupled light with variable amounts of wavefront divergence, to elicit different accommodation responses from the user's eyes.

1. Name of the product in this design: Sub-Gateway (VII). 2. Application of this design: This design is used as a secondary gateway optical router in FTTR all-optical networking. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model.

In an example, the present invention provides a quantum communication system. The system has a light source configured to generate a pulse of light and a plurality of optical cavities. In an example, each of the optical cavities has at least a pair of optical mirrors to form a cavity. In an example, each cavity has a plurality of qubits comprising a laser coolable atom. Each cavity has an interconnect coupled to the cavity. In an example, the system has an optical router coupled to the light source coupled to each of the cavities through the interconnect. In an example, the optical router is configured to transmit the pulse of light to any one of the plurality of optical cavities or receive a reflected pulse of light from any one of the plurality of optical cavities and transmit the reflected pulse.