Abstract: An optical transceiver includes a built-in optical switch to switch between diverse fiber paths in switches in a datacenter or in switches between two datacenters. The built-in optical switch can be used to switch between racks in a datacenter to increase capacity for any rack that requests it. A controller, which receives a signal from a server computer in one of the racks, can be external to the optical transceiver or within the optical transceiver. In either case, the server computer can be provided with additional bandwidth when needed. For connections between datacenters, the built-in optical switch allows for optical line protection, but without the need for a splitter circuit, which incurs a significant power loss and requires a more expensive transceiver. Consequently, the built-in optical switch within an optical transceiver can be used in a variety of contexts to increase efficiency and reduce overall costs for network devices.

Abstract: Systems and methods for conducting various types of Connection Validation (CV) are provided for reducing the overall CV scan time of regular CV scans. A Reconfigurable Optical Add/Drop Multiplexer (ROADM), according to one implementation includes at least one degree component; at least one add/drop component; a plurality of fibers interconnecting the at least one degree component and/or the at least one add/drop component; and a controller configured to, responsive to any of ongoing operation and connection of one or more fibers of the plurality of fibers, cause a Connection Validation (CV) scan in the ROADM that cycles through the one or more fibers, attain a desired cycle time for the CV scan through one or more techniques, and determine one or more of connectivity and whether fiber loss is within expectations, based on the CV scan.

Abstract: Mapping of ports to other network components is generated by physically bending a fiber optic cable and then determining which optical network terminals experience a signal power loss (or receive attenuated signals) based on the bending. The physical bending can be done using a bending tool and the optical network terminals that experience the signal power loss can be identified using a back-end database operation. Generally, the correspondence between the physical bending and the power loss at the downstream components and or upstream components of the network is used to create the mapping of the ports at the splitter level.

Abstract: Systems and methods implemented by a network element in a G.8032 ring include steps of operating an Operations, Administration, and Maintenance (OAM) session with an adjacent network element; and detecting an optical bypass in the G.8032 ring based on the OAM session. The steps can include flushing a forwarding database of the network element based on the optical bypass. The steps can include detecting prior to the optical bypass, that a neighboring node includes a ring block; and subsequent to the optical bypass, installing a new channel block. The optical bypass enables faster protection switching and the present disclosure incorporates an optical bypass in G.8032.

Abstract: A ternary phase shift keying transmitter and receiver can efficiently communicate using ternary encoded data that avoids indistinguishable transition curves for each of the three modulated states in the ternary encoded data. The transmitter is interoperable and can function with different types of receivers including direct detection-based receivers and coherent detection-based receivers.

Abstract: An optical submarine branching apparatus 1 includes a control unit and a switching unit. The switching unit connects to a plurality of first optical fiber transmission lines connecting to a first terminal station, a plurality of second optical fiber transmission lines connecting to a second terminal station, and a third optical fiber transmission line connecting to a third terminal station, and switches a transmission route of a wavelength-multiplexed optical signal. The control unit controls the switching of the transmission route by the switching unit. The switching unit is configured to be capable of connecting each of the plurality of first optical fiber transmission lines to one of the plurality of second optical fiber transmission lines. The switching unit further is configured to be capable of switching any one of the plurality of first optical fiber transmission lines to connect to the third optical fiber transmission line.

Abstract: Methods, apparatus and non-transitory machine-readable mediums are provided for wireless communication in communication networks comprising a wireless device, a radio access network node and a wireless light communication network node. In one embodiment, a method is performed by a node (102, 104, 120) of a wireless communication network (100), the wireless communication network comprising a wireless device (104), a radio access network node (102) and one or more wireless light communication (LC) network nodes (106). At least one of the wireless device and the radio access network node comprise a plurality of antenna elements configurable to provide a transmit or receive beam (110, 112) for communication with the other of the wireless device and the radio access network node.

Abstract: Described is a communication system having a transmitter comprising a first optical module, the first optical module comprising a plurality of Micro-Ring Modulators (MRMs); and a receiver comprising a second optical module, the second optical module comprising a plurality of Micro Ring Resonators (MRRs), wherein the first optical module and the second optical module are connected by an optical waveguide; and at least one comb laser external to an optical co-package comprising the transmitter or the receiver, the at least one comb laser irradiating the optical waveguide, the at least one comb laser emitting light in a plurality of wavelengths, where at least one first MRM and at least one first MRR are adjusted to operate in at least one first wavelengths from the plurality of wavelengths, and at least one second MRM and at least one second MRR are adjusted to operate in at least one second wavelength from the plurality of wavelengths.

Abstract: A method of operating an optical switch (1) arranged in an optical DCN (2), comprising: providing first and second NIC's (3, 10), having first and second label channel parts (5, 12) and first and second data channel parts (6, 13), configured in a first and second ToR (7, 14) of a first and second server rack (8, 15), arranging an optical switch communicating with the first and second data channel parts via first and second data channels (16, 17), configuring a switch controller (18) communicating with the first and second label channel parts via first and second label channels (19, 20), transmitting destination information of data packets (30) carried by paired label packets (31) to the switch controller, transmitting data packets to the optical switch, generating signals (45) to configure the optical switch, and sending the data packets to a destination port.

Abstract: An optical device includes an optical waveguide, a buffer layer that is layered on the optical waveguide, and an opening that is formed at least in the buffer layer above a part near a side surface of the optical waveguide. The optical device further includes an electrode that is layered in the opening and that is configured to apply a signal to the optical waveguide and a silicon layer that is layered on the buffer layer excluding the opening.

Abstract: Described is a transmission system (100 to 1000) including a data output unit (110, 210, 810b), for instance a camera operating within MRI environment. In an embodiment, a control transfer unit (812b to 812d) may manage the operation of the data output unit (110, 210, 810b), wherein the control transfer unit (812b to 812d) may be preferably located closely to data output unit (110, 210, 810b), e.g. mounted in vicinity of MRI device (192) or within a radius of less than 5 meters or less than 3 meters from the MRI device (192). The control transfer unit (812b to 812d) may have one connection or multiple connections to at least one additional secondary control unit, e.g. to sending and receiving units (250, 250b1, 250b2).

Abstract: Systems and methods for resolving control conflicts in trunk protection links are provided. A head-end node includes a first line-mux controller and a second line-mux controller, first actuator components for a first fiber span, and second actuator components for a second fiber span, wherein the first line-mux controller and the second line-mux controller are configured to control the first actuator components and the second actuator components, respectively, and a trunk protection switch configured to connect an input to each of the first fiber span and the second fiber span.

Abstract: An optical line terminal (OLT) operating within a multi-rate PON is configured to perform downstream timeslot scheduling among an associated number of ONUs so as to minimize the change in information rate from one scheduled ONU timeslot to the next. In this manner, the clock recovery component at each ONU is best able to follow the change in information rates, remaining locked on the system clock regardless of the specific implementation of the clock and data recovery (CDR) functionality at a given ONU. The OLT may schedule timeslot assignments that span a pair of adjacent parts (referred to as a two-part cycle), with the first part having timeslots assigned from the lowest information rate (e.g., NRZ) to the highest (e.g., PAM4) and the second part's timeslots assigned in the reverse order; that is, from the highest to the lowest information rate.

Abstract: An optical routing device that includes a mounting component which includes a rechargeable battery and a processor that communicates over-the-air with a master communication device or one or more service communication devices via RF supervisory links. The processor receives an instruction via the RF supervisory links to control a movement of the mounting component along with the optical routing component such that an angle or a direction of deflection of laser beams from an optical routing component of optical routing device is changed. The optical routing component includes two distinct laser beam handling regions configured to handle plurality of laser beams concurrently in which first laser beam in first wavelength is deflected via first region for downstream data communication in downstream path and second laser beam in second wavelength is deflected via second region for upstream data communication in upstream path for free-space optical communication independent of optical fibers.

Abstract: The disclosed systems and methods support addition of bands to a multi-band optical interface. The systems and methods can include a multi-band interface device for optical networks. The device can include a multi-band optical amplifier, a C-Band Add/Drop multiplexer, an L-Band Add/Drop multiplexer and an amplifier noise source. The multi-band optical amplifier can be connected to the C-Band Add/Drop multiplexer and connected to the L-Band Add/Drop multiplexer through the amplifier noise source. The amplifier noise source be configured to generate a combination of bulk noise and an input transmission received from the L-Band Add/Drop multiplexer. The gain of the amplifier noise source can depend on the power of the received input transmission. The power of the received input transmission can be increased over a period of time, transitioning the amplifier noise source from acting as a bulk noise source to acting an amplifier.

Abstract: A secure tiered, robust, and deterministic converged communications architecture with the capacity to support a plurality of power distribution automation devices/components with fiber-enabled fail-over protection is described.

Abstract: An optical receiver obtains a to-be-processed signal block; the optical receiver determines a prediction signal block corresponding to the to-be-processed signal block; the optical receiver determines a noise compensation coefficient of the to-be-processed signal block based on the to-be-processed signal block and the prediction signal block; and the optical receiver performs noise compensation on the to-be-processed signal block based on the noise compensation coefficient.

Abstract: Aspects of the present disclosure describe large scale steerable optical switched arrays that may be fabricated on a common substrate including many thousands or more emitters that may be arranged in a curved pattern at the focal plane of a lens thereby allowing the directional control of emitted light and selective reception of reflected light suitable for use in imaging, ranging, and sensing applications including accident avoidance.

Abstract: The present invention discloses a capacity optimization method for a mobile optical wireless communication system and a communication method and system.

Abstract: An optical submarine branching apparatus includes a first, second, and third switching unit. The first switching unit is connected to N first, second, and third optical fiber transmission lines connected to a first, second and third terminal stations, respectively, and switches a transmission route for a wavelength-multiplexed optical signal. The second switching unit is interposed on the N first optical fiber transmission lines between the first terminal station and the first switching unit, and switches a connection relation between in front of and behind a place where the second switching unit is interposed. The third switching unit is interposed on the N second optical fiber transmission lines between the second terminal station and the first switching unit, and switches a connection relation between in front of and behind a place where the third switching unit is interposed.