Low power and/or low footprint optical communication technologies that support short to medium range exoatmospheric communications and provide bidirectional communication with nearly spherical coverage.

Technologies for switching network traffic include a network switch. The network switch includes one or more processors and communication circuitry coupled to the one or more processors. The communication circuity is capable of switching network traffic of multiple link layer protocols. Additionally, the network switch includes one or more memory devices storing instructions that, when executed, cause the network switch to receive, with the communication circuitry through an optical connection, network traffic to be forwarded, and determine a link layer protocol of the received network traffic. The instructions additionally cause the network switch to forward the network traffic as a function of the determined link layer protocol. Other embodiments are also described and claimed.

A system and a method of interface communication being compatible with SFP+ optical modules and QSFP+ switch are provided. The system includes an adapter card. The adapter card includes a set of SFP+ golden fingers that comply with the SFP+ protocol, a set of QSFP+ golden fingers that comply with the QSFP+ protocol, and a microcontroller unit. The adapter card communicates with the SFP optical module through the SFP+ golden fingers, and communicates with the QSFP switch through the QSFP+ golden fingers. The microcontroller unit is used to extend and process the pin information in the adapter card, and to convert the two different protocols of SFP+ and QSFP+, so that the module under the SFP+ protocol can respond under the port of QSFP+, so as to realize the data communication between the SFP+ optical module and the QSFP+ switch.

The present invention is to provide a wavelength cross-connect device that reduces device costs.

A wavelength cross-connect device 10B performs relaying for changing, using WSSs, routes of optical signals transmitted from M routes 1h to Mh, in which K optical fibers 1f to Kf are grouped for each of the routes, on an input side to output the optical signals to respective optical fibers 1f to Kf of M routes 1h to Mh on an output side. Input ports of each of the optical couplers 25a to 26d are connected to output ports of each of first WSSs 21a to 22k. Further, the input ports of each of the optical couplers 25a to 26d are connected to the output ports of the first WSSs 21a to 22k and output ports of each of the optical couplers 25a to 26d are connected to input ports of second WSSs 23a to 24k such that the optical signals input from the optical fibers 1f to Kf in each of the routes 1h to Mh on the input side are capable of being output to the optical fibers 1f to Kf in each of the routes 1h to Mh on the output side, respectively.

To make it possible to satisfactorily perform a switching of an optical signal. An optical switch and a controller are included. The optical switch is situated between optical communication lines of a specified number of systems situated on an input side, and optical communication lines of a specified number of systems situated on an output side. The controller acquires connection-destination switching request information from an electric communication line, and controls, on the basis of the connection-destination switching request information, a connection established, in the optical switch, between the optical communication line on the input side and the optical communication line on the output side. The connection-destination switching request information includes, for example, connection destination information and time information that indicates a switching timing.

A large number of degrees for relays of optical signals transmitted via optical paths in the degrees is secured. A wavelength cross-connect device 20A performs a relay by splitting optical signals from respective degrees indicated by reference numerals 40l, 40h, 40m, 40q, each of the degrees being provided by optical fibers, via respective optical couplers and outputting the split optical signals to output sides of the plurality of degrees via respective WSSs 23a to 23d. As the optical couplers, variable couplers 27a to 27d whose respective splitting ratios, each of which is a ratio of optical signal power losses in splitting an optical signal, are variable are used. The wavelength cross-connect device 20A includes a control unit 26 that performs control to change the splitting ratios in such a manner as to eliminate an imbalance among OSNR margins of the output sides of the degrees in which a plurality of optical paths transmitting the split optical signals extend. The control unit 26 calculates the margins for the respective optical paths transmitting the split optical signals via the variable couplers 27a to 27d, for each of the output sides of the degrees. The control unit 26 performs control to, based on respective smallest margins of the degrees in all the margins, change the splitting ratios of the variable couplers 27a to 27d in such a manner as to eliminate an imbalance between the margins of the degrees.

Technologies for dynamically managing resources in disaggregated accelerators include an accelerator. The accelerator includes acceleration circuitry with multiple logic portions, each capable of executing a different workload. Additionally, the accelerator includes communication circuitry to receive a workload to be executed by a logic portion of the accelerator and a dynamic resource allocation logic unit to identify a resource utilization threshold associated with one or more shared resources of the accelerator to be used by a logic portion in the execution of the workload, limit, as a function of the resource utilization threshold, the utilization of the one or more shared resources by the logic portion as the logic portion executes the workload, and subsequently adjust the resource utilization threshold as the workload is executed. Other embodiments are also described and claimed.

An optical module of a configuration that ensures use of commercially available electronic components and reduction of the number of current generation circuits and electric wirings. The optical module includes an electronic component mounted on a separate board from a light wave circuit board provided with an optical component such as an optical switch, and they are each electrically connected by wire bonding. For this reason, the optical module can use a commercially available electronic component. In addition, the module has a configuration in which heaters of optical switches, which do not simultaneously flow currents, are grouped and a current from one current generation circuit is supplied to any one of the heaters in the group by means of one electrical switch. For this reason, the optical module does not have to be prepared with the same number of electrical switches and current generation circuits as the number of heaters.

A service data transmission method, to simplify a structure of a communication network and facilitate planning of the communication network by service planning personnel. The method includes: A service receiving device actively sends a MAC address of the service receiving device to a plurality of service sending devices that have a connection relationship with the service receiving device, and each service sending device configures local routing information based on the MAC address. The MAC address of the service receiving device does not need to be obtained based on an ARP request, avoiding a limitation on an IP address of a device port caused by the ARP request. An IP address of one device is used to replace IP addresses of a plurality of ports of the device, simplifying a communication network.

Low power and/or low footprint optical communication technologies that support short to medium range exoatmospheric communications and provide bidirectional communication with nearly spherical coverage.