Abstract: Implementations for remotely managing an optical transceiver connected to a network device and optical network is described. A user can use a network device controller and optical transceiver controller in a remote server to communicate with the service agent in the network device and the optical transceiver to configure communications with the optical network through the optical transceiver. The service agent and its controller in the server can perform virtualized transport functions and the network device controller and the network device can, in some instances, implement layer 2/3 demarc.

Abstract: Example embodiments describe an optical line terminal, OLT, configured to communicate in a passive optical network with one or more optical network units, ONUs. Optical burst signals transmitted by the one or more ONUs have respective symbol rates. The optical line terminal includes a burst-mode receiver configured to decode an optical burst signal from an ONU to a decoded output signal by one or more digital signal processing circuitries that process a signal at respective configurable processing rates. The optical line terminal is configured to perform obtaining the symbol rate of a next optical burst signal; and adjusting, during an interval between reception of valuable symbols within a previous optical burst signal and reception of valuable symbols within the next optical burst signal, the configurable processing rate of one or more digital signal processing circuitries based on the symbol rate of the next optical burst signal.

Abstract: A multiplicative analog frequency transform optical neural network (MAFT-ONN) encodes data in the frequency domain, achieves matrix-vector products in a single shot using photoelectric multiplication, and uses a single electro-optic modulator for the nonlinear activation of all neurons in each layer. Photoelectric multiplication between radio frequency (RF)-encoded optical frequency combs allows single-shot matrix-vector multiplication and nonlinear activation, leading to high throughput and ultra-low latency. This frequency-encoding scheme can be implemented with several neurons per hardware spatial mode and allows for an arbitrary number of layers to be cascaded in the analog domain. For example, a three-layer DNN can compute over four million fully analog operations and implement both a convolutional and fully connected layer.

Abstract: There is provided a technique for implementing instantly responsive communication flexibly by setting communication occasions in an on-demand manner that are not included in a communication plan scheduled in advance for inter-satellite optical communication. One aspect of the present disclosure relates to a satellite including an optical signal obtainer that captures an optical beacon transmitted from a relay satellite in response to a communication request received from an earth station, an image processor that retrieves a bright spot in a captured image frame, an optical beacon detector that detects the optical beacon based on a flickering state of the retrieved bright spot, and an optical communicator that establishes inter-satellite optical communication with the relay satellite based on the detected optical beacon.

Abstract: An optical ranging system includes a coherent IQ receiver configured to receive a radio frequency (RF)-encoded optical signal, generate an in-phase (I) electrical signal and a quadrature (Q) electrical signal based on the RF-encoded optical signal; a first analog-to-digital converter (ADC) configured to convert the I electrical signal into an I digital signal; a second ADC configured to convert the Q electrical signal into a Q digital; and a processing circuit configured to generate a power signal having the target frequency by squaring the I digital signal and the Q digital signal, and summing a squared I digital signal and a squared Q digital signal. The processing circuit is configured to analyze the power signal to determine a signal phase corresponding to signal peaks associated with the target frequency, and determine a distance value based on a phase difference between the signal phase and a reference power signal.

Abstract: A system may include a solar cell and a modulator connected to an output of the solar cell. The system may receive a signal. When the signal being in a first state corresponding to modulation, the modulator may modulate voltage output of the solar cell and cause the solar cell to perform optical transmission. When the signal is in a second state corresponding to energy harvesting, the modulator to cease modulation of the output of the solar cell.

Abstract: A shared OTDR resource is disclosed that utilizes a combination of a pluggable OTDR and incorporated 1×N optical switch to allow for OTDR measurement and monitoring functionality to be shared between a plurality of N separate optical fibers that are used as communication paths between a pair of optical nodes (for example, a plurality of individual fiber spans used to interconnect a pair of data centers). The capability to maintain the OTDR functionality within a small form factor pluggable housing (e.g., QSFP, OSFP, or the like) in combination with the switch results in a shared OTDR resource that remains pluggable, and allows for increased flexibility in how this resource is shared among the various fibers.

Abstract: Described herein are packages and techniques aimed at stabilizing the wavelengths of emission of a wavelength division multiplexing (WDM) optical source against temperature fluctuations. An optical source is coupled with a feedback loop that monitors the degree to which the wavelengths of emission conform to the designated WDM channel grid and dynamically adjusts the operating parameters of the source to maintain such conformity. The technique involves a combination of coarse spectral alignment and fine spectral alignment. An optical source uses a pair of thermo-electric coolers (TEC) to aid in the spectral alignment process. A first TEC is thermally coupled to a laser chip. A second TEC is thermally coupled to a multiplexer chip—a chip that monitors compliance of the emission wavelengths with the designated WDM grid.

Abstract: The Electromagnetic Materials Identification Tool (EMIT) is a handheld-tool for laboratory, industrial, or field use, via portable devices or integrated systems. EMIT establishes a new EM wave-state category in the Periodic Table of Elements, identifying materials as structured spatial wave-state expressions that preserve particle spin, position, superposition, and spatial relationships. Signatures are viewed/stored as Electromagnetic Holograms (EmH) on Resonant Encoded Memory (REM). EMIT comprises a Quantum Transceiver Antenna (QTA) and coupled Transceiver Discriminator (TD). The QTA detects and synthesizes multidimensional EmH-signatures of elements, gemstones, minerals, synthetics and organics, by volume, concentration, and/or purity, for real-time identification and material transformation. AI enhances signature analysis, anomaly detection, and enhanced resolution. EMIT integrates with NMR, MRI, X-ray, Ultra-sound, microscope and telescope systems.

Abstract: An estimation apparatus includes: an acquiring unit that acquires performance information corresponding to the performance of light from nodes configuring an optical network; and an estimating unit that compares the performance information to be an estimation target acquired by the acquiring unit with performance information at normal time at which no anomaly occurs, and performs at least one of estimation of anomaly occurrence and identification of an anomaly occurring node.

Abstract: An Optical Line Terminal (OLT) system configured to operate in a Passive Optical Network (PON) includes a transmitter configured to communicate with a plurality of Optical Network Units (ONUs) on a downstream channel that is shared by all of the plurality of ONUs; and one or more receivers configured to communicate with the plurality of ONUs on an upstream channel and on an out-of-band channel, wherein the upstream channel is Time Division Multiple Access (TDMA) such that one of the plurality of ONUs transmits at a time. Also, the OLT system can include circuitry configured to cache characteristics of the plurality of ONUs for configuring the receiver.

Abstract: This invention provides a network node comprising: an optical fibre interface configured to receive, from one or more remote optical sources, a first optical signal, a second optical signal and a third optical signal, wherein the first, second and third optical signals each have a respective wavelength within an optical fibre transmission band being one of the O-band, E-band, S-band, C-band, L-band, and U/XL-band; one or more wavelength converters configured to convert the wavelength of one or more of the first optical signal, second optical signal and third optical signal; and a Rydberg-atom based transmission medium configured to be excited by the first optical signal, second optical signal and third optical signal, following wavelength conversion of one or more of the first optical signal, second optical signal and third optical signal, such that electrons of the Rydberg-atom based transmission medium are excited to a predetermined Rydberg state.

Abstract: A lighting apparatus includes a light source, a power module, a controller, a data input module and a signal processing unit. The light source includes multiple types of LED modules. The power module converts an AC power to a DC power. The controller generating multiple driving currents supplied to the LED modules. The data input module is coupled to the controller. The data input module receives input data to be transmitted. The signal processing unit is coupled to the data input module to process the input data into multiple data streams corresponding to the plurality of transmit antennas. Each transmit antenna transmits the corresponding data stream independently.

Abstract: A burden for configurating optical transmission equipment is increased as capacity in an optical transmission system is increased. An optical control device according to the present invention includes a storage means for storing transmission characteristics information in advance, the transmission characteristics information relating to an optical transmission system that transmits signal light via an optical transmission line, a first connection means for receiving the signal light and test light having a wavelength different from that of the signal light, an optical modulation means for modulating the test light by using the transmission characteristics information, and generating test modulation light, and a second connection means for delivering the test modulation light.

Abstract: A computing device may include a substrate. A computing device may include a processing unit supported by the substrate. A computing device may include an optical transmitter supported by the substrate and in electrical communication with the processing unit.

Abstract: The invention relates to an Optical Front-end, OFE, (400) for Optical Wireless Communication, OWC, the OFE comprising: an optical receiver with at least a photodetector (102a) and a trans-impedance amplifier, and a two-dimensional array of optical transmitters (103a) each having an individual transmitter field-of-view, and one or more drivers, the two-dimensional array arranged to create a combined transmitter field of view that is larger than 5 the individual transmitter field of view, the plurality of optical transmitters arranged such that optical axes of the plurality of optical transmitters are evenly distributed within the combined transmitter field of view.

Abstract: A method of categorizing a group of multimode optical fibers, the method including comparing an effective modal bandwidth of a first multimode optical fiber with a first threshold, the first multimode optical fiber being in a group of multimode optical fibers meeting a first OM-standard and the first threshold being an effective modal bandwidth of the first multimode optical fiber. The method further including categorizing the first multimode optical fiber as meeting OM functional requirements of a second OM-standard if the effective modal bandwidth of the first multimode optical fiber is equal to or above the first threshold, wherein the second OM-standard is higher than the first OM-standard.

Abstract: Examples include a network node for a non-detectable laser communication system, a bi-directional laser communication system comprising such a network node, a method for a non-detectable laser communication, and in particular to an optronic system for non-detectable, compact bi-directional laser communication, which is particularly suitable for communication with a drone or other unmanned vehicle (UXV).

Abstract: A beaconless alignment approach can be used such as to facilitate establishment of an optical communication link or to enhance reliability of such an optical communication link. When laser-based free-space optical communication is used, such an approach can be referred to as an agile beaconless laser beam alignment (ABLBA) technique. Such an ABLBA technique can consume less scanning time as compared to other approaches and can be used for alignment in relation to establishing an optical communication link between stations, such as between satellites. For example, at a transmitting station, a non-optical beam can be scanned according to a first specified search pattern within an initial search field, and an optical field can be scanned according to a second specified search pattern within a refined search field, the refined search field established at least in part using an alignment identified from the scanning of the non-optical beam.

Abstract: A free-space optical communication system includes an optical phased array (OPA) photonic integrated chip, a transceiver photonic integrated chip, and one or more processors. The OPA chip includes a plurality of array elements and a plurality of phase shifters. The transceiver chip includes one or more transmitter components and one or more receiver components. The one or more processors are configured to transmit a first signal via the OPA chip and the transceiver chip, and receive a second signal via the OPA chip and the transceiver chip.