An apparatus comprises a plurality of laser emitters each having a different center frequency; a plurality of photodiodes arranged to receive laser energy from the laser emitters via an air space; and a plurality of laser bandpass filters arranged between the plurality of laser emitters and the plurality of photodiodes, wherein each one of the photodiodes is arranged to receive laser energy respectively via one of the laser bandpass filters, and wherein each laser bandpass filter has one of the different center frequencies included in a passband of the laser bandpass filter and has the other of the different center frequencies excluded from the passband.

A hybrid integrated circuit (HIC) with a high bandwidth, low-power, miniaturized, optically coupled data communication interface, the interface and an arrangement including the HIC. Active and passive components and integrated circuit (IC) chips may be mounted on an HIC substrate and collecting data. The HIC is smaller than one millimeter square and communicates data externally through a microLED (LED) array mounted on the HIC substrate and coupled to other HIC components. Each on LED consumes less than ten microwatts (10 W).

An information-processing system having spherical and parabolic reflectors, optical signal processors, and detectors comprising optically active surfaces. The spherical reflector has an internal light-reflecting surface and a spherical processor with internal and external optically active surfaces, with its center coincident with that of the spherical reflector. The optical signal processor's internal and external surfaces include transmitters and detectors for transmitting and receiving a optically encoded signals along various distinct paths. A portion of the internal path coincides with a line that passes through the center of the sphere. Optical signals emitted from the external surface of the processing sphere and reflected by the internal surface of the external spherical reflector to neighboring regions of the processing sphere, enabling external relay of information around the sphere without congesting the internal cavity of the sphere. This makes possible multiple uses of the same optical frequency during a given time period.

Systems and methods for performing signed matrix operations using a linear photonic processor are provided. The linear photonic processor is formed as an array of first amplitude modulators and second amplitude modulators, the first amplitude modulators configured to encode elements of a vector into first optical signals and the second amplitude modulators configured to encode a product between the vector elements and matrix elements into second optical signals. An apparatus may be used to implement a signed value of an output of the linear processor. The linear photonic processor may be configured to perform matrix-vector and/or matrix-matrix operations.

The subject matter described herein relates to various antenna element configurations, antenna array configurations, their operations including various systems and methods to generate modulated data for transmission by an RF antenna array via an optical processing engine. The subject matter includes optical processing engine structure and methods (e.g., modulating in the optical domain, MIMO and spatial modulation via RF beam formation, coherent transmission of RF signal components, coherent operation of spatially separate RF antenna arrays) that may be implemented with the various RF antenna array structures. In some examples, the system combines the virtues of digital, analog and optical processing to arrive at a solution for scalable, non-blocking, simultaneous transmission to multiple UE-s. Much of the system architecture is independent of the RF carrier frequency, and different frequency bands can be accessed easily and rapidly by tuning the optical source (TOPS). In some examples, multiple communication channels may be transmitted simultaneously to different locations. The transmitter may be formed by an array of optically fed antennas.

A node includes a switch controller and an optical module configured to receive optical signals from at least one other node in a network. It is determined from an electrical signal for a first optical signal whether to process data from one or more subsequent optical signals or to route the one or more subsequent optical signals out of the of the node without processing data from the one or more subsequent optical signals. According to another aspect, a first optical signal is transmitted from a first node in a data processing system to a second node in the data processing system. Based on evaluation at the second node, it is determined whether to route one or more subsequent optical signals to a third node without processing data from the one or more subsequent optical signals at the second node.

Integrated circuit chips may be optically interconnected using microLEDs. Some interconnections may be vertically-launched parallel optical links. Some interconnections may be planar-launched parallel optical links.

An on-chip optical interconnection structure and network, where the on-chip optical interconnection structure includes M levels of optical switches, and m.sup.th-level optical switches in the M levels of optical switching devices include 2.sup.m-1 optical switches. Each optical switch in (i-1).sup.th-level optical switches in the M levels of optical switches is coupled to two optical switches in i.sup.th-level optical switches. Two optical switches in the i.sup.th-level optical switches coupled to a same optical switch in the (i-1).sup.th-level optical switches are coupled. The on-chip optical interconnection network is divided into levels, and switches coupled in a grid manner are formed such that hierarchical switching may be performed, and conflicts and delays in communication are reduced.

A fault tolerant optical apparatus resilient to ballistic impact damages, capable of enabling distributed processing and networking and using the spectrophotometric transmission properties of polymer film.

Embodiments of a computing device and optical data switching circuitry are generally described herein. A processing element of the optical data switching circuitry may generate a plurality of optical data signals, and may send the optical data signals to an optical switch of the optical data switching circuitry. The optical switch may transmit the optical signals to a fiber optic router for relay to different destinations. The optical switch may switch between transmission directions for transmission of the optical signals to different receiving ports of the fiber optic router. The receiving ports of the fiber optic router may be mapped to the different destinations, in some cases.