Abstract: A system for using free-space optics to interconnect a plurality of computing nodes can include a plurality of node optical transceivers that are electrically coupled to at least some of the plurality of computing nodes. The system can also include a plurality of router optical transceivers that facilitate free-space optical communications with the plurality of node optical transceivers. Each node optical transceiver among the plurality of node optical transceivers can have a corresponding router optical transceiver that is optically coupled to the node optical transceiver. The system can also include a router that is coupled to the plurality of router optical transceivers. The router can be configured to route the free-space optical communications among the plurality of computing nodes.

Abstract: Proposed is a method for transmitting signals in visible light communications. The method for transmitting signals in visible light communications comprises: a step of receiving interference information from a receiving end; a step of transmitting a constellation set index to the receiving end; and a step of transmitting, to the receiving end, signals modified on the basis of the constellation set index. Meanwhile, the constellation set index may be selected on the basis of the received interference information.

Abstract: A cable assembly may include a cable having a plurality of electrically-conductive wires and an optical port termination at a first end of the cable for terminating the plurality of electrically-conductive wires and configured to electrically couple to an optical network port integral to an information handling system and configured to receive an optical transceiver module.

Abstract: An optical positioning-navigation-timing (PNT) system includes a managed optical communications array (MOCA) transceiver. The MOCA transceiver includes an array of optical transceivers for transmitting and receiving optical signals, each optical transceiver including a laser and a beam steering element, and a controller for controlling the operation of the array of optical transceivers. Each optical transceiver is adjustable for optical parameters of the optical signals so transmitted and received, the optical parameters including at least one of phase, angle, wavelength, time delay, amplitude, pulse delay, polarization, timing offset, phase, and divergence angle. Further, the controller is configured for controlling the optical parameters to include PNT data in a portion of the optical signal transmitted from the MOCA transceiver.

Abstract: Hybrid wire-fiber data networks that include wire-fiber transceivers protected against environmental interferences. In some embodiments, a hybrid-wire-fiber data network of this disclosure provides a fiber-optic link between portions of one or more wired networks. In some embodiments, a hybrid wire-fiber data network of this disclosure includes a fiber-optic link that relies only on message-priority arbitration performed on wired portions of one or more wired networks. In some embodiments, a wire-fiber transceiver of this disclosure includes electromagnetic environment (EME) protective circuitry for one or both of input power and input signals. In some embodiments, a wire-fiber transceiver of this disclosure is configured for use with a controlled area network media-access protocol (CAN) and/or a derivative of CAN. Various data communication and other methods are also disclosed in addition to hybrid wire-fiber data networks and components thereof.

Abstract: An apparatus includes an optical phased array having multiple array elements. Each array element includes an antenna element configured to transmit or receive an optical signal. Each array element also includes an electro-optic (EO) modulator associated with the antenna element, where the EO modulator is configured to modulate the optical signal transmitted or received by the antenna element. The antenna elements may be configured to transmit optical signals, the EO modulator of each array element may be configured to perform at least one of amplitude modulation and phase modulation, where at least one of the amplitude modulations and the phase modulation is based on encoded data. The antenna elements may be configured to receive optical signals, the EO modulator of each array element may be configured to perform at least one of phase modulation and amplitude modulation, and a decoder may be configured to recover data.

Abstract: Aspects of the present disclosure describe systems, methods and structures providing detection and localization of disaster-related indoor events via hybrid ethernet/optical fiber cable.

Abstract: According to one embodiment, a repair terminal includes reception means for receiving a setting value of a predetermined setting item set in an information processing device by visible light communication using light emitted by a light source device connected to the information processing device; matching means for matching a setting value of the setting item received by the reception means with a matching setting value corresponding to the setting item and determining appropriateness of the setting value; and output means for outputting a matching result of the matching means.

Abstract: An optical data transmission system and method employs positive only data modulation, with an offset applied to the positive modulated values before generating modulated drive current signals for a light emitting component. The offset is such that the minimum drive current falls in a range where the electron-to-photon efficiency of the light emitting component is substantially constant. The drive current thus falls in a more linear part of its current vs. intensity characteristic. This reduces distortion and hence enables increased data rate.

Abstract: A trainable transceiver may comprise an electro-optic element comprising a first substrate having an electrode coating on a surface; a second substrate generally parallel to and in a spaced-apart relationship with the first substrate and having an electrode coating on a surface; and a window in at least one of the first substrate and the second substrate from which the electrode coating has been at least partially removed. The trainable transceiver may also comprise a machine-readable optical image selectively visible through the window; a light source disposed in proximity to the machine-readable optical image; and a controller capable of controlling the light source. Upon receipt of an appropriate input, the controller causes the activation of the light source which, in turn, causes the machine-readable optical image to be visible through the electro-optic element.

Abstract: A method includes mapping, by an optical transceiver, a received first OTU4 signal to a first FlexO frame without interleaving the first OTU4 signal into an ODUC signal prior to mapping the first OTU4 signal to the first FlexO frame. The method also includes communicating, by the optical transceiver, the first FlexO frame with the mapped first OTU4 signal to a coherent DSP over a first FOIC.

Abstract: A system comprising: a plurality of first devices, each configured to transmit a low-frequency, LF, light signal comprising an identifier of the respective first device, and to transmit and/or receive a high-frequency, HF, light signal comprising data content; and a second device configured to receive a LF light signal from each of the first devices, and to transmit and/or receive a HF light signal from at least one first device, wherein the second device has an adaptable receiving and/or transmitting direction for respectively receiving and/or transmitting the HF light signal, and wherein the second device comprises a controller configured to: based on the identifiers encoded in the LF light signals, determine a position of the second device relative to the first devices and select a first device; and based on the determination, adapt the receiving and/or transmitting direction toward the selected first device.

Abstract: Transmit-side equalization is disclosed for network devices and network communications methods employing onboard/co-packaged optics. An illustrative network device includes a substrate having a host device IC (integrated circuit) and an optical module IC connected by a short-reach link. The optical module IC having a transmit chain includes a CTLE (continuous time linear equalizer) to at least partly compensate for a channel response of the short-reach link, and a driver that amplifies an output of the CTLE for a photoemitter that couples to an optical fiber.

Abstract: Techniques (e.g., method, apparatuses, etc.) for permitting communications, e.g., optical communications are described. In one example, a first communication apparatus may send a bit allocation table, BAT, message, to a second communication apparatus. The BAT update information has a BAT update information signalling update information for updating a BAT which is signalled to be updated. The BAT update information groups information into different groups of subcarriers, wherein the BAT update information has, for each group of subcarriers, information indicating the number of carriers in the group.

Abstract: The present disclosure provides a data transceiving method, a data transceiving device, a wavelength configuration method and a wavelength configuration device. The data transceiving method includes that a first optical module receives control information sent by a second optical module; the first optical module adjusts transmission and receiving wavelengths according to the control information; and the first optical module executes transmission and receiving of data with the second optical module according to the adjusted transmission and receiving wavelengths.

Abstract: A method for performing ONU Management and Control Interface (OMCI) synchronization includes receiving an OMCI message containing a OLT-G entity identifying OLT's vendor identification (ID) and version. The method also includes determining if an OLT vendor identification (ID) matches with a current vendor ID and if an Optical Line Terminal (OLT) version is compatible with current OMCI handlers. When the OLT vendor ID fails to match with the current vendor ID, automatically performing a OMCI handler switching process. The OMCI handler switching process includes setting a current OLT vendor as a new OLT vendor ID, deleting a OMCI configuration previously stored in the flash memory after setting the new OLT vendor ID, and rebooting the ONT to allow the ONT to initialize a OMCI configuration using a new OMCI profile.

Abstract: An optical transmission device includes: a first receiver circuit, a second receiver circuit, a switch circuit, a terminator circuit, a packet buffer, a clock generator, and a signal generator. The first receiver circuit converts an optical signal received via a first route into a first electric signal. The second receiver circuit converts an optical signal received via a second route into a second electric signal. The switch circuit selects the first electric signal or the second electric signal. The terminator circuit extracts a packet from an electric signal selected by the switch circuit. The packet buffer stores the packet extracted by the terminator circuit. The clock generator generates a clock signal. The signal generator generates a continuous signal that includes the packet stored in the packet buffer by using the clock signal.

Abstract: Systems and methods include determining a current state of a network; determining a new state for the network having an improved cost relative to the current state; determining a defragmentation plan to move the network from the current state to the new state, the defragmentation plan including a sequence of steps; and, responsive to an event that presents an opportunity, implementing one or more steps of the sequence of steps. The implementing is conditioned on occurrence of the opportunity.

Abstract: An optical data communication system includes a plurality of resonator structures and a laser array that includes a plurality of lasers optically connected to the plurality of resonator structures. Each resonator structure has a respective free spectral wavelength range and a respective resonance wavelength. A maximum difference in resonance wavelength between any two resonator structures in the plurality of resonator structures is less than a minimum free spectral wavelength range of any resonator structure in the plurality of resonator structures. Each laser in the plurality of lasers is configured to generate continuous wave light having a respective wavelength. The laser array has a central wavelength. A variability of the central wavelength is greater than a minimum difference in resonance wavelength between any two spectrally neighboring resonator structures in the plurality of resonator structures.

Abstract: Systems and methods for logical to physical link mapping in a fiber optic network are provided. In one implementation, a method includes receiving geographic data related to one or more fiber links in a fiber optic network; receiving logical links on the one or more fiber links; receiving results from one or more tests performed on the one or more fiber links; utilizing the results to determine a physical representation of the one or more fiber links; and displaying a network map of the fiber optic network with the physical representation.