Abstract: Various embodiments of the present invention are directed to arrangements of multiple optical buses to create scalable optical interconnect fabrics for computer systems. In one aspect, a multi-bus fabric (102) for transmitting optical signals between a plurality of nodes (108-111) comprises a plurality of optical buses (104-107). Each optical bus is optically coupled to each node of the plurality of nodes, and each optical bus is configured to so that one node broadcasts optical signals generated by the node to the other nodes of the plurality of nodes.

Abstract: Various embodiments of the present invention relate to systems for reducing the amount of power consumed in temperature tuning resonator-based transmitters and receivers. In one aspect, a system comprises an array of resonators (801-806) disposed adjacent to a waveguide (646) and a heating element (808). The heating element is operated to thermally tune the array of resonators so that each resonator in a subset of the array of resonators is in resonance with a wavelength of light traveling in the waveguide.

Abstract: A blade includes a circuit board to insert into a slot of a chassis, an optoelectronic device on the circuit board, an optical media that is flexible, coupled to the optoelectronic device, and able to guide a plurality of optical signals, a first connector optically coupled to the optical media, and a standoff on which the first connector is mounted. The first connector includes first alignment features shaped to mate with second alignment features of a second connector. The standoff provides the first connector with sufficient freedom of motion to permit the first alignment features to shift the first connector relative to the second connector and into a seated position as the first connector and the second connector move toward each other.

Abstract: In one example, a composite processor (100) includes a circuit board (1200), a first processor element package (1230), and a second processor element package (1240). The circuit board has an optical link (1211) and an electrical link (1221). The first processor element package (1230) includes a substrate (1231) with an integrated circuit (240), a sub-wavelength grating optical coupler (1232), and an electrical coupler (1233) coupled to the electrical link (1221) of the circuit board (1200). The second processor element package (1240) includes a substrate (1241) with an integrated circuit (240), a sub-wavelength grating optical coupler (1242), and an electrical coupler (1243) coupled to the electrical link (1221) of the circuit board (1220).

Abstract: A system employs a flexible optical media, two connectors, and a mechanism such as a magnet that brings the connector together when the connectors are close to each other. The optical media is able to guide optical signals, and one connector is attached to an end of the optical media. Each connector also has alignment features and provides paths for the optical signals. The alignment features of each connector are shaped to mate with the alignment features of the other connector and to shift the connectors relative to each other as the mechanism pushes the connector together. The alignment features further have seated positions at which the paths in one connector are aligned with the paths in the other connector and separated by a free space gap.

Abstract: As described herein, a network device includes an optical circuit switch to perform circuit switching. The network device also has a plurality of removable line cards, each of which includes a packet switch. A switching manager automatically reconfigures the optical circuit switch based on a configuration of the removable line cards to maintain a guaranteed packet switching bandwidth between active line cards.

Abstract: This disclosure is directed to optical-to-electrical receiver and transceiver integrated circuits that can be used to send and receive multiple optical signal data streams using at least one optical bus. In one aspect, a fan-in integrated circuit of a node includes an arbiter/multiplexer, and at least one receiver. Each receiver is electronically connected to the arbiter/multiplexer. Each receiver receives at least one optical signal over an optical broadcast bus and converts the optical signals into a data stream encoded in electronic signals. The arbiter/multiplexer selects one receiver at a time to send an electronic signal to the arbiter/multiplexer and outputs the electronic signal to the node for processing.

Abstract: Various embodiments of the present invention are directed to methods and systems for transmitting optical signals from a source to a plurality of receiving devices. In one method embodiment, an optical enablement signal is transmitted from the source to the plurality of receiving devices. The target receiving device responds to receiving the optical enablement signal by preparing to receive one or more optical data signals. The source transmits the one or more optical data signals to the target receiving device. The remaining receiving devices do not receive the one or more optical data signals.

Abstract: Illustrated is a computer system and method that includes a Processing Element (PE) to generate a data packet that is routed along a shortest path that includes a plurality of routers in a multiple dimension network. The system and method further include a router, of the plurality of routers, to de-route the data packet from the shortest path to an additional path, the de-route to occur where the shortest path is congested and the additional path links the router and an additional router in a dimension of the multiple dimension network.

Abstract: Tunable resonator systems and methods for tuning resonator systems are disclosed. In one aspect, a resonator system includes an array of resonators disposed adjacent to a waveguide, at least one temperature sensor located adjacent to the array of resonators, and a resonator control electronically connected to the at least one temperature sensor. Each resonator has a resonance frequency in a resonator frequency comb and channels with frequencies in a channel frequency comb are transmitted in the waveguide. Resonance frequencies in the resonator frequency comb are to be adjusted in response to ambient temperature changes detected by the at least one temperature sensors to align the resonance frequency comb with the channel frequency comb.

Abstract: An electronic system includes a plurality of electronic nodes, each having a transmitter module and a plurality of receiver modules, in which the transmitter module is positioned at a same location with respect to the receiver modules in each of the electronic nodes, and a plurality of fanout optical buses, each fanout optical bus comprising a transmitter section, a plurality of receiver sections, and at least one substantially straight optical waveguide extending between the plurality of receiver sections, wherein each transmitter section is optically connected to a transmitter module of a respective one of the electronic nodes and wherein the receiver sections of each of the fanout optical buses is connected to respective ones of the receiver modules of the electronic nodes.

Abstract: An optical fiber connector is disclosed. The optical fiber connector comprises a form having a curved surface with a first end near the bottom surface of the form. The curved surface is perpendicular to the bottom surface of the form at the first end. A first plurality of active optical fibers are positioned along the curved surface of the form in a side-by side arrangement with the tips of each of the first plurality of optical fibers adjacent to the first end of the curved surface. The ends of each of the first plurality of active optical fibers have been striped down to cladding and the cladding of each optical fiber contacts the cladding of the adjacent optical fibers. An inner cover is attached to the form thereby capturing the first plurality of active optical fibers between the curved surface of the form and an inside curved surface in the inner cover.

Abstract: Various embodiments of the present invention are directed to methods and systems for transmitting optical signals from a source to a plurality of receiving devices. In one method embodiment, an optical enablement signal is transmitted (401) from the source to the plurality of receiving devices. The target receiving device responds to receiving the optical enablement signal by preparing to receive one or more optical data signals. The source transmits the one or more optical data signals to the target receiving device. The remaining receiving devices do not receive the one or more optical data signals.

Abstract: Methods and apparatus to determine and implement multidimensional network topologies are disclosed. An example method disclosed herein comprises receiving an input parameter for determining a multidimensional network topology for a network interconnecting a plurality of devices, and determining a set of multidimensional network topologies, each multidimensional network topology of the set comprising a respective plurality of nodes to interconnect the plurality of devices, each node in each multidimensional network topology of the set being fully connected with all neighbor nodes in each dimension of the multidimensional network topology, and each multidimensional network topology of the set satisfying a first constraint based on the input parameter.

Abstract: Optical interconnect fabrics and optical switches are disclosed. In one aspect, an optical interconnect fabric comprises one or more bundles of optical broadcast buses. Each optical broadcast bus is optically coupled at one end to a node and configured to transmit optical signals generated by the node. The optical fabric also includes a number of optical tap arrays distributed along each bundle of optical broadcast buses. Each optical tap array is configured to divert a portion of the optical power associated with the optical signals carried by a bundle of optical broadcast buses to one of the nodes.

Abstract: Embodiments of the present invention are directed to optical broadcast systems. The nodes of the system can be any combination of cores, caches, input/output devices, and memory, or any other information processing, transmitting, or storing device. The optical broadcast system includes an optical broadcast bus. Any node of the system in optical communication with the broadcast bus can broadcast information in optical signals to all other nodes in optical communication with the broadcast bus.

Abstract: Methods and systems are provided that prevent buffer overflow in multibus systems. In one aspect, a method for controlling the flow of data in a multibus system includes, for each node having an associated broadcast bus in the multibus system, generating status information regarding available data storage space of each receive buffer of the node. The method includes broadcasting the status information to the other nodes connected to the broadcast bus and collecting status information regarding the available storage space of receive buffers of the other nodes connected to the broadcast bus. The method also includes determining whether or not to send data from the node to at least one of the other nodes over the broadcast bus based on the collected status information.

Abstract: A circuit switched optical interconnection fabric includes a first hollow metal waveguide and a second hollow metal waveguide which intersects the first hollow metal waveguide to form an intersection. An optical element within the intersection is configured to selectively direct an optical signal between the first hollow metal waveguide and a second hollow metal waveguide.

Abstract: Tunable resonator systems and methods for tuning resonator systems are disclosed. In one aspect, a resonator system includes an array of resonators disposed adjacent to a waveguide, at least one temperature sensor located adjacent to the array of resonators, and a resonator control electronically connected to the at least one temperature sensor. Each resonator has a resonance frequency in a resonator frequency comb and channels with frequencies in a channel frequency comb are transmitted in the waveguide. Resonance frequencies in the resonator frequency comb are to be adjusted in response to ambient temperature changes detected by the at least one temperature sensors to align the resonance frequency comb with the channel frequency comb.

Abstract: Various embodiments of the present invention relate to systems for reducing the amount of power consumed in temperature tuning resonator-based transmitters and receivers. In one aspect, a system comprises an array of resonators (801-806) disposed adjacent to a waveguide (646) and a heating element (808). The heating element is operated to thermally tune the array of resonators so that each resonator in a subset of the array of resonators is in resonance with a wavelength of light traveling in the waveguide.