Abstract: An optical communication device includes: an optical switch configured to output an optical signal input from one transmission line to another transmission line among a plurality of transmission lines; and a control unit configured to control the optical switch such that a wavelength in accordance with a subscriber device and a transmission destination on a path of a communication destination is allocated to the subscriber device by using a control signal inserted or written by the control unit or a monitoring unit, and the input optical signal is output to the another transmission line corresponding to the communication destination.

Abstract: A system supporting the geographically dispersed remote optical line terminals.

Abstract: Systems and methods for performing polarization compensation in optical fiber-based quantum telecommunications systems are provided. The system includes a polarization modulator optically coupled to a photon source by an optical fiber and at least one controller coupled to the polarization modulator. The at least one controller is configured to determine, using a machine learning model and/or a lookup table, a feedback parameter based on one or more measurements of a polarization of probe photons at a location along the optical fiber, the probe photons being generated by the photon source; and using the feedback parameter, to change a setting of the polarization modulator to change a polarization of quantum data photons propagating in the optical fiber subsequent to the probe photons.

Abstract: One aspect of the present invention is a optical main signal processing node apparatus including: an input port for inputting an optical multiplexed with signals pertaining to a plurality of services from an optical transmission path; an output port for outputting an optical signal multiplexed with signals pertaining to a plurality of services to an optical transmission path; a optical main signal processer configured to perform optical main signal processing on an optical signal input from the input port; and a path switch configured to switch a path of the optical signal input from the input port to one of a first path for guiding the optical signal to the output port and a second path for guiding the optical signal to the optical main signal processer.

Abstract: A multi-channel radio frequency transceiving device includes an optical module, a digital signal processing module, a radio frequency transceiving module, a downlink module, and a microprocessing module. The optical module receives an optical signal corresponding to baseband data, converts the optical signal into an electric signal, and outputs the electric signal to the digital signal processing module. The digital signal processing module obtains the baseband data and channel number information on the basis of the electric signal, and allocates and processes the baseband data. The microprocessing module determines the number of working channels of the radio frequency transceiving module, the corresponding number of working channels of the downlink module and a downlink output power on the basis of the channel number information and the baseband data, and closes the remaining channels in the downlink module.

Abstract: A system, a line module in a terminal node of an optical network, and/or a method are described in which a first embedded device of a first line module transmits a first fault signal to a first real time processor of the first line module. In response, the first real time processor triggers the first embedded device to deactivate a first laser of a first coherent optical transceiver of the first line module and transmits a second fault signal to a second real time processor of a second line module. In response, the second real time processor triggers a second embedded device of the second line module to activate a second laser of a second coherent optical transceiver of the second line module. The first laser and the second laser may be operable to supply a first optical signal and a second optical signal, respectively.

Abstract: An example method includes storing status data for a network communication device connected to a host device by a pluggable connector in a memory of the network communication device. A change in the status data is signaled using a signal on the pluggable connector. The status data is sent from the memory of the network communication device to the host device over the pluggable connector. The status data is displayed on a local indicator of the host device.

Abstract: An optical fiber link includes a remote optical analog sensor; an optical analog sensor local controller for generating a laser beam; and a pair of fiber cable link including a up fiber and a down fiber and connected between the optical analog sensor local controller and the remote optical analog sensor. The power strength of the laser beam transmitted from the optical analog sensor local controller to the remote optical analog sensor through the down fiber is modulated in the remote analog optical sensor.

Abstract: A silicon optical chip with integrated antenna array comprises a wavelength division multiplexer, antenna array, photodiode, amplifier, and electro-optical modulator. The wavelength division multiplexer is configured to receive an optical signal with a plurality of wavelengths and to divide the optical signal into a plurality of wavelength division optical signals, or is configured to integrate a plurality of wavelength division optical signals into optical signals to output. The antenna array is configured to receive or transmit radio frequency signals. The amplifier is signally connected to the photodiode and the antenna and is configured to amplify the radio frequency signal received by the antenna. The electro-optical modulator is signally connected to the amplifier and the wavelength division multiplexer and is configured to transform the amplified radio frequency signal into wavelength division optical signals to input to the wavelength division multiplexer.

Abstract: It is difficult to improve the usage efficiency of an optical communication network due to the passband narrowing effect in a wavelength selection process in an optical communication network using a wavelength division multiplexing system; therefore, an optical network management apparatus according to an exemplary aspect of the present invention includes wavelength selection information generating means for generating wavelength selection information on a wavelength selection process through which an optical path accommodating an information signal goes, with respect to each optical path; and wavelength selection information notifying means for notifying an optical node device through which the optical path goes of the wavelength selection information.

Abstract: An apparatus embedded with one or more terahertz transceivers is described. The one or more terahertz transceivers based on at least Gunn diode are provided to facilitate wireless communication in the apparatus, where the apparatus is embedded with one or more planar antennas. The transceiver operates in terahertz and may be coupled to one or two different antennas, one for transmission and the other for reception.

Abstract: A co-packaged optical-electrical chip can include an application-specific integrated circuit (ASIC) and a plurality of optical modules, such as optical transceivers. The ASIC and each of the optical modules can exchange electrical signaling via integrated electrical paths. The ASIC can include Ethernet switch, error correction, bit-to-symbol mapping/demapping, and digital signal processing circuits to pre-compensate and post-compensate channel impairments (e.g., inter-channel/intra-channel impairments) in electrical and optical domains. The co-packaged inter-chip interface can be scaled to handle different data rates using spectral efficient signaling formats (e.g., QAM-64, PAM-8) without adding additional data lines to a given design and without significantly increasing the power consumption of the design.

Abstract: In an aspect, an OWC transmitter transmits, to an OWC receiver, a first DC bias parameter, receives, from the OWC receiver, DC bias feedback based on a measurement associated with an OWC link between the OWC transmitter and the OWC receiver, and transmits an OWC signal with a second DC bias parameter that is based on the DC bias feedback from the OWC receiver. In another aspect, an OWC receiver receives, from an OWC transmitter, a first DC bias parameter, transmits DC bias feedback based on a measurement associated with an OWC link between the OWC transmitter and the OWC receiver, and receives, from the OWC transmitter, an OWC signal having a second DC bias parameter based on the DC bias feedback.

Abstract: A vehicle wiring system includes a plurality of functional units to be mounted in a vehicle, an optical transmission line that is wired between the functional units and configured to transmit an optical signal of the functional units, an optical coupler that is disposed in a partial section of the optical transmission line and constitutes a part of the optical transmission line, and a structural member that constitutes a part of the vehicle and is at least partially transparent. The optical coupler has an optical waveguide that passes through the structural member.

Abstract: System, method, and instrumentalities are described herein for transmitting information optically. The optical source may be configured to generate a beam. The beam may include a series of light pulses. The beam of light may be modulated. A modulator may be configured to modulate the series of light pulses in response to a data transmission signal, thereby encoding transmission data into the series of light pulses. The modulated beam of light may be received and both amplified and filtered. The filtered beam of light may be transmitted from to a detector having a photoreceiver. The photoreceiver may be configured to extract the transmission data from the filtered beam of light.

Abstract: Photonic interposers that enable low-power, high-bandwidth inter-chip (e.g., board-level and/or rack-level) as well as intra-chip communication are described. Described herein are techniques, architectures and processes that improve upon the performance of conventional computers. Some embodiments provide photonic interposers that use photonic tiles, where each tile includes programmable photonic circuits that can be programmed based on the needs of a particular computer architecture. Some tiles are instantiations of a common template tile that are stitched together in a 1D or a 2D arrangement. Some embodiments described herein provide a programmable physical network designed to connect pairs of tiles together with photonic links.

Abstract: Disclosed is a SmartDust system for contactless digital controlled serialized analog processing of analog values received from an object. The SmartDust system includes a hub unit and at least one electronic circuitry capacitive coupled to the hub unit. The hub unit includes an oscillator for generating a frequency, and a first electrode connected to the oscillator to emit the frequency as an alternating electric field. The electronic circuitry stores and performs switching instructions and the digital logic operations. The electronic circuitry receives analog values and generate sampled and processed analog values. The electronic circuitry provides the processed values to external components. The hub unit includes a controller for providing the switching instructions and the digital logic operations to the electronic circuitry, and a modulator for modulating the alternating electric field with the switching instructions and the digital logic operations.

Abstract: The symbol determination device generates the plurality of estimated reception symbol sequences on the basis of the estimated transfer function of the transmission line represented by the tap gain value applied to each tap of the nonlinear filter including the plurality of taps and the plurality of candidate symbol sequences, determines the transmission symbol by the maximum likelihood sequence estimation on the basis of the determination target reception symbol sequence obtained from the reception signal sequence and each of the plurality of estimated reception symbol sequences, identifies the estimated transmission symbol corresponding to the determination target reception symbol sequence, calculates the new tap gain values on the basis of the determination target reception symbol sequence and the identified estimated transmission symbol sequence, updates the estimated transfer function by applying the calculated tap gain values to the taps of the transmission line estimation unit, and selects the tap to be

Abstract: Techniques for applying one or more terahertz transceivers in wearable display glasses are described. The one or more terahertz transceivers operate signals in Terahertz. When used on a pair of display glasses, these transceivers allow the display glasses to communicate with other devices wirelessly, including receiving/transmitting image date.

Abstract: An optical communication system includes a looped path in which an active trunk fiber and a standby trunk fiber are connected in a loop. A plurality of optical combining/splitting units is provided on an active trunk fiber in series, and a plurality of slave devices is connected the plurality of optical combining/splitting units, respectively. A master device performs optical communication with each slave device. Each optical combining/splitting unit includes an optical sensor configured to detect an optical signal passing through an optical fiber and a transmitter. The transmitter determines whether or not there is an abnormality in optical communication on the basis of a detection state of the optical signal and transmits an abnormality notification including identification information of the optical combining/splitting unit to a monitoring apparatus in a case where there is an abnormality.