Abstract: An optical transmitter may include a transmit laser assembly configured to emit multiple light beams. The optical transmitter may additionally include an isolator configured to rotate a corresponding polarization state of each of the multiple light beams. The optical transmitter may additionally include a power multiplexing combiner configured to receive the multiple light beams from the isolator and combine the multiple light beams into a combined light beam. The optical transmitter may additionally include a lens configured to focus the combined light beam onto an optical fiber for transmission.

Abstract: A data processing method and apparatus are provided, which relate to the communications field and can reduce a delay and energy consumption for data processing in a data exchange process of an optical network. A specific solution is: obtaining a to-be-processed optical data packet; obtaining an optical label from the to-be-processed optical data packet; determining, according to the optical label, whether an optical signal data frame is a data frame of a preset type; if the optical signal data frame is the data frame of the preset type, obtaining a port corresponding to a label destination address according to an optical label destination address and generating an optical switching instruction; and outputting the to-be-processed optical data packet through a target port according to the optical switching instruction. The data processing method and apparatus are used for data processing.

Abstract: A computerized system and method for managing a passive optical network (PON) is disclosed. The system includes a detection and analysis module adapted for receiving uploaded measurement data from an optical line terminal (OLT) and at least one optical network terminal (ONT), and at least one of technical tools data, service failure data, and outside plant data. The detection and analysis module is adapted for determining a source of failure or potential failure in the PON by correlating the uploaded measurement data and the at least one of technical tools data and service failure data with information stored in a memory medium for the OLT and each ONT.

Abstract: An optical network system includes a master node and a plurality of optical switch nodes, allowing the number of nodes without depending on the number of wavelengths. The master node is configured to: divide a wavelength path having an arbitrary wavelength into time slots each having a predetermined time period; and allocate the time slots to each of the optical switch nodes. Each of the optical switch nodes is configured to: synchronize the time slots based on information delivered from the master node; and thereby transmit or receive a data or performs route switching.

Abstract: A software-defined passive optical network includes a set of optical network terminals, a set of passive optical network ports, and a plurality of splitters. Each of the optical network terminals is connected to a single one of the passive optical network ports through a given one of the splitters, and the network is divided into a plurality of areas, each of which is assigned a given fraction of the passive optical network ports. Passive optical network port utilization is monitored for each of the plurality of areas; for those of the areas determined to have passive optical network port overutilization, the number of the passive optical network ports assigned thereto is increased; and for those of the areas determined to have passive optical network port underutilization, the number of the passive optical network ports assigned thereto is reduced.

Abstract: Aspects of the subject disclosure may include, for example, a coupler that includes a tapered collar that surrounds a transmission wire. A coaxial coupler, that surrounds at least a portion of the transmission wire, guides an electromagnetic wave to the tapered collar. The tapered collar couples the electromagnetic wave to propagate along an outer surface of the transmission wire. Other embodiments are disclosed.

Abstract: Aspects of the subject disclosure may include, for example, a coupler that includes a tapered collar that surrounds a transmission wire. A coaxial coupler, that surrounds at least a portion of the transmission wire, guides an electromagnetic wave to the tapered collar. The tapered collar couples the electromagnetic wave to propagate along an outer surface of the transmission wire. Other embodiments are disclosed.

Abstract: A method includes receiving at least a first node connection from a network external to the data processing hardware. The network includes a network of nodes each operative to transmit and/or receive directional beams containing packets of data. The method also includes identifying an open first communication link between a first node and a second node of the network and determining a first recommended set of beam vectors to constrain a first scanning range of the first node when initiating beam forming with the second node. The method also includes transmitting the first recommended set of beam vectors to the first node. The first recommended set of beam vectors cause the first node to execute beam forming training with the second node using the first recommended set of beam vectors to establish the first communication link with the second node.

Abstract: 10-Gbps client signals (1a) to (1c) which are processed by a 10-Gbps transponder (3a), a 40-Gbps transponder (3b), and a 100-Gbps transponder (3c), respectively, are branched by optical couplers (2a) to (2c) into an M:N switch (40). The M:N switch (40) selects a client signal to be made redundant from the branched client signals (1a) to (1c) and outputs the selected client signal to a redundancy 100-Gbps transponder (50) having 10-Gbps-based client interfaces.

Abstract: A high capacity node includes a plurality of transceivers each with a transmitter configured to support a wavelength within a full transparent window of one or more optical fibers; and one or more optical amplifiers covering the full transparent window, wherein the one or more optical amplifiers comprise one of (i) a single ultra-wideband amplifier covering the full transparent window and (ii) a plurality of amplifiers each supporting a different band of the full transparent window.

Abstract: Method and system for bidirectional exchange of data with a mobile apparatus through at least one leaky optical fiber. An optical reception module of the mobile apparatus receives an incoming optical signal optically leaked from the leaky optical fiber. An optical to electrical conversion module of the mobile apparatus converts the incoming optical signal into an incoming electrical signal. A control unit of the mobile apparatus processes the incoming electrical signal to extract incoming data from the incoming electrical signal, and processes outgoing data to generate an outgoing electrical signal transporting the outgoing data. An electrical to optical conversion module of the mobile apparatus converts the outgoing electrical signal into an outgoing optical signal. An optical transmission module of the mobile apparatus injects the outgoing optical signal into the leaky optical fiber. For example, the fiber is positioned along a path of a rail-guided trolley travelling along a rail.

Abstract: An optical module is disclosed. According to one implementation, the optical module comprises an optical receiver, a diode, a first resistor, a first capacitor, a comparator, and a control chip. The diode anode connects electrically with a triggering signal output end of the optical receiving module, the cathode of the diode connects with one end of the first capacitor and one input end of the comparator. Another end of the first capacitor connects with the ground; the first resistor is connected in parallel with both ends of the first capacitor. A pre-set reference voltage is connected with another input end of the comparator. The optical receiver generates a first triggering signal in response to a burst mode optical signal. After inputting the first triggering signal into the diode anode, the comparator outputs a second triggering signal from the output end, triggering the control chip to generate a reset signal input into the optical receiver.

Abstract: A network appliance may include a signal splitter that splits an incoming signal into multiple portions. The signal splitter can direct one portion of the incoming signal to a switching fabric and another portion of the incoming signal to an optical switch. By monitoring the power intensity of the portion of the incoming signal received by the switching fabric, the network appliance can seamlessly switch between a bypass traffic path and a pass-through traffic path without losing network traffic caused by gaps in network connectivity. Such a configuration also enables the network appliance to maintain an accurate record of the logical connectivity state even when the network appliance is in the bypass state (i.e., when network traffic bypasses the switching fabric of the network appliance).

Abstract: An apparatus, comprising a receiver configured to receive a primary signal that comprises a narrowband noise component and a broadband noise component, a processor coupled to the receiver and configured to determine, in a time domain, an estimate of the narrowband noise component in real-time, determine a cancelled output signal in real-time that comprises an estimate of the broadband noise component, and determine an estimate of a power level of the narrowband noise component in real-time.

Abstract: A method and a device for realizing an optical channel data unit (ODU) shared protection ring (SPRing) are disclosed. The method includes: first, receive an ODUj, wherein the ODUj carries an ODUi; then, perform de-multiplexing processing to obtain the ODUi from the ODUj; next, multiplex the ODUi to an optical channel data unit k (ODUk); meanwhile, keep monitoring the ODUk; and when the monitoring result that is obtained through monitoring the ODUk indicates that a failure has occurred, perform a switching on the ODUi; wherein i, j, k are integers equal to or larger than 0, k is larger than j, j is larger than i, and i, j, k are used to indicate different rates of respective optical channel data unit (ODU) signals.

Abstract: A system and method are presented for coupling OAM optical beams to optical fibers. The system may include, for instance, an OAM beam generator, for receiving one or more of a plurality of input signals, and generating a different OAM mode signal for each input signal. The OAM beam generator may further be operative to adjust a location and/or an exit angle of the one or more OAM mode signals before sending the one or more OAM mode signals to a beam combiner that combines the one or more OAM mode signals into a combined mode OAM transmission. The system may further include a controller in communication with at least one crosstalk estimate sensor and the at least one OAM beam generator, the controller operative to optimize the crosstalk estimate by receiving the crosstalk estimate for one of the OAM mode signals, and sending control instructions instructing the OAM beam generator to adjust a location and/or an exit angle of the one or more OAM mode signals to reduce the crosstalk estimate.

Abstract: A modulation device includes a modulator circuit that causes a light source to perform light communication, storage storing an internal ID, and a control circuit that determines whether an external ID is input into the modulation device. When the control circuit determines that the external ID is input into the modulation device, the control circuit causes the input external ID to be input, as a modulation signal, into the modulator circuit. When the control circuit determines that the external ID is not input into the modulation device, the control circuit causes the internal ID stored in the storage to be input, as a modulation signal, into the modulator circuit.

Abstract: There is provided a method for measuring an optical power attenuation value of a multimode DUT. The method generally has, using an optical source, propagating test light along a multimode device link having a first multimode device, the multimode DUT and a second multimode device serially connected to one another; said propagating including inducing a preferential attenuation of high-order optical fiber modes of the test light along the first multimode device and along the second multimode device; using an optical power detector, detecting an optical signal resulting from the propagation of the test light along the multimode device link and transmitting an output signal based on the detected optical signal; and using a processor, determining the optical power attenuation value of the multimode DUT based on the output signal.

Abstract: Security is increased in quantum communication (QC) systems lacking a true single-photon laser source by encoding a transmitted optical signal with two or more decoy-states. A variable attenuator or amplitude modulator randomly imposes average photon values onto the optical signal based on data input and the predetermined decoy-states. By measuring and comparing photon distributions for a received QC signal, a single-photon transmittance is estimated. Fiber birefringence is compensated by applying polarization modulation. A transmitter can be configured to transmit in conjugate polarization bases whose states of polarization (SOPs) can be represented as equidistant points on a great circle on the Poincaré sphere so that the received SOPs are mapped to equidistant points on a great circle and routed to corresponding detectors.

Abstract: Integrated performance monitoring (PM); optical layer operations, administration, maintenance, and provisioning (OAM&P); alarming; amplification, and the like is described in optical transceivers, such as multi-source agreement (MSA)-defined modules. A pluggable optical transceiver defined by an MSA agreement can include advanced integrated functions for carrier-grade operation which preserves the existing MSA specifications allowing the pluggable optical transceiver to operate with any compliant MSA host device with advanced features and functionality, such as Forward Error Correction (FEC), framing, and OAM&P directly on the pluggable optical transceiver. The advanced integrated can be implemented by the pluggable optical transceiver separate and independent from the host device.