Abstract: The method comprises detecting, by an OLT when an ONU is connected to an optical termination point at a CPE of a user; notifying, by said OLT, a SDN controller; providing connectivity to said user to a dedicated and limited network providing access to a single self-provisioning web site by the SDN controller at least connecting said CPE to a service provider site; receiving, by the self-provisioning web site, credential information identifying the user on the self-provisioning web site, wherein the self-provisioning web site, once the user being connected therein, further receiving configuration information specifying which FTTH services the user wants to subscribe; and disconnecting, by the SDN controller, the user from the self-provisioning web site and reconnecting the user to a new network via a vCPE connected to said Internet service provider infrastructure and configured to provide access to Internet and to the subscribed FTTH services to the user.

Abstract: An optical communication apparatus receives a signal in which optical signals each including multiplexed subcarriers are frequency multiplexed, and includes: transceivers to perform reception process on a processing target band in which any one of the optical signals is included and to calculate a frequency offset amount between local light and a reception target optical signal that is included in the processing target band and calculate a carrier frequency interval between the local light and an optical signal adjacent to the reception target optical signal; and a frequency control unit to calculate an adjustment amount when an optical communication apparatus that is a source of the optical signals adjusts the frequencies of the optical signals based on the frequency offset amount and the carrier frequency interval calculated by the transceivers and to transmit the calculated adjustment amount to the optical communication apparatus that is a source of the optical signals.

Abstract: An optical transmission device includes: an optical transmitter that transmits, at a time of system activation, a control signal to another optical transmission device by using a plurality of subcarriers; and a controller that allocates a link communication channel (LCC) to a subcarrier, among the plurality of subcarriers, for which bare minimum transmission characteristic is obtained, based on a response to the control signal from the other optical transmission device.

Abstract: A system and method for generating copies of a signal includes a first radiation source configured for providing a plurality of pump radiation beams, a second radiation source configured for providing a signal radiation beam, and a second-order nonlinear optical medium to receive the plurality of pump radiation beams from the first radiation source and the signal radiation beam from the second radiation source and to emit a plurality of idlers, where the plurality of idlers are low-noise copies of the signal.

Abstract: An optoelectronic module includes a transceiver operable to transmit data optically. The transceiver includes a light emitter to emit light from the module, and a light detector to detect light entering the module. The light detector is disposed at a rotationally symmetric position with respect to a central axis of the module. Such modules can help facilitate the exchange of data optically between two devices.

Abstract: A multi-mode wavelength-division multiplexing (WDM) receiver includes a receiver head to receive a free-space optical (FSO) signal. A multi-mode demultiplexers (demux) is coupled to the receiver head via a multi-mode fiber to generate a number of optical signals based on the FSO signal. A number of repeaters modify the optical signals and generate a number of single-mode optical signals.

Abstract: A timing adjuster shifts a timing between a first data-stream group and a second data-stream group in accordance with a timing setting. A data generator in first test mode generates a first test-data stream repeating 2N-bit marks and 2N-bit spaces as each of a first data stream and a third data stream, and generates a second test-data stream that is N-bit shifted from the first test-data stream, where N denotes a natural number. A first phase-difference setting and a second phase-difference setting are rendered zero. The timing adjuster adjusts the timing setting so as to maximize a detected value from a peak detection circuit.

Abstract: A housing for packaging an optical transmitter module includes a body, a focusing structure, a first three-dimensional (3D) optical waveguide, and an optical fiber interface. The optical fiber interface is located inside the body and configured to accommodate a single-mode optical fiber. The first 3D optical waveguide is embedded in the body. The focusing structure is configured to receive a first single-mode optical signal and enable the received first single-mode optical signal to be focused for a first time at a focal point of the focusing structure. The first 3D optical waveguide is configured to receive the first single-mode optical signal, and output the first single-mode optical signal to the single-mode optical fiber. The focal point of the focusing structure coincides with an input end of the first 3D optical waveguide.

Abstract: An optical fiber status detection method includes: alternately sending, by a first station, an optical time domain reflectometer (OTDR) pulse and optical supervisory channel (OSC) data to a second station on a same channel, where the second station is a neighboring station of the first station; and receiving, by the first station, reflection light returned by the OTDR pulse by using an optical fiber between the first station and the second station, and obtaining an OTDR probe value according to the reflection light.

Abstract: The invention relates to a system for sending data in an optical network comprising source nodes (1-1, 1-2, 1-3, 1-4, 1-5), each capable of generating, in a spectral band that is associated with it, a multi-carrier optical data signal obtained by modulation of a source signal at a source wavelength and of sending this signal in the form of single-band data bursts (11-13, 21-23, 31-33, 41-43, 51-53) that can be associated with distinct source wavelengths, and a combiner (1,2) for combining single-band data bursts, sent by the source nodes in the spectral bands that are associated with them, into multi-band data bursts (61-63, 71-73) occupying a spectral band corresponding to a juxtaposition of the spectral bands associated with the source nodes. In this system, a unit for controlling an instant of sending of said single-band data bursts by the source nodes, implements a control plane taking account of a path time of the single-band data bursts sent by the source nodes to the combiner.

Abstract: In one embodiment, a method includes receiving power delivered over a data fiber cable at an optical transceiver installed at a network communications device and transmitting data and the power from the optical transceiver to the network communications device. The network communications device is powered by the power received from the optical transceiver. An apparatus is also disclosed herein.

Abstract: An integrating sphere-equipped optical measurement device and optical connector polarity and type identification and loss measurement are provided. The optical measurement device receives one or more optical signals that respectively emanate from one or more optical fibers of a plurality of optical fibers of an optical fiber cable. The optical measurement device determines one or more respective positions where the one or more optical signals impinged on a sensor. The optical measurement device determines based on the one or more positions, one or more receiving positions of the one or more optical signals, respectively. The optical measurement device determines a polarity of the optical fiber cable based on both the one or more receiving positions and one or more or transmitting positions of the one or more optical signals, respectively.

Abstract: A method of Light-based Communication (LCom) using camera frame-rate based light modulation is provided. The method includes receiving light having modulated light properties that vary at a first frequency from a LCom-enabled luminaire by an image capture device using a global shutter image capture process, comparing light properties received at the image capture device over sequential image capture instances, and determining, from the compared light properties, data encoded by the modulated light.

Abstract: Aspects of the present disclosure provide a technical solution that enables various passive optical network (PON) type infrastructures to coexist with dense wavelength division multiplexing (DWDM) network infrastructures. According to an embodiment, an optical communication network framework uses an optical coexistence topology to enable coexistence of PON type components and DWDM components. An optical coexistence system uses an optical coexistor to convey an upstream optical signal to one of an arrayed wave grating (AWG) of a DWDM system and an optical line terminal (OLT) of a PON by conveying unfiltered portions of the upstream optical signal to the OLT and filtered portions of the upstream optical signal to the AWG.

Abstract: Disclosed herein are a dual-mode device operating in a visible light communications mode and a wireless network communications mode, and a method performed by the device. The visible light communications device includes a wireless network communications unit including a fixed identifier and performing communications based on a wireless protocol, a visible light transmitting unit transmitting the fixed identifier using a visible light communications protocol, and a controller (control unit) controlling the visible light transmitting unit so that it selectively transmits the fixed identifier using the visible light communications protocol depending on whether the wireless network communications unit is connected to a wireless network.

Abstract: A fiber optic tap system includes a first receiver module having an input port configured to receive an optical fiber. The first receiver module is operable to convert a received optical signal to an electrical signal. A first transmitter module is coupled to receive the electrical signal from the first receiver module and convert the received electrical signal to an optical signal. The first transmitter module has an output port for outputting the optical signal. A first tap module is coupled to receive the electrical signal from the first receiver module.

Abstract: A free space optical communication system receiver (500) comprising: a central optical sensor (600); and a plurality of further optical sensors (601-604) disposed around a peripheral edge of the central optical sensor (600). The free space optical communication system receiver (500) may be coupled to means for moving the free space optical communication system receiver (500) relative to an incoming optical signal (510). A controller (508) may be configured to, using measurements of the incident optical signal (510) by the plurality of further optical sensors (601-604), control the means so as to move the free space optical communication system receiver (500) relative to the incident optical signal (510).

Abstract: The disclosure provides for a method and a system for tracking an optical communication beam based on polarization modulation of the optical communication beam. The method includes polarizing, at a first communication device, an optical communication beam in a polarization pattern. The optical communication beam carries an optical signal. The polarization pattern encodes information by varying between a first polarization direction and at least one second polarization direction. The polarized optical communication beam is then transmitted from the first communication device to a second communication device. At the second communication device, the polarized optical communication beam is processed to extract the encoded information, and the encoded information is used at the second communication device to track the optical communication beam.

Abstract: A function disabler system includes a personal electronic device having at least one component such as a camera, and a processor having pulsed light communication software enabling receipt and transmission of pulsed light communication signals. The processor additionally includes a hosting customer software application, where the personal electronic device receives at least one pulsed light communication signal within a designated area and the pulsed light communication signal includes an instruction signal which instructs the hosting customer software application to disable the at least one component when the personal electronic device is positioned in the designated area.

Abstract: Provided are a device and method for free space coherent optical communications by means of an automatic compensation for phase noise in atmosphere using a femtosecond laser optical comb, and more particularly, a device and method for free space coherent optical communications by means of an automatic compensation for phase noise in atmosphere using a femtosecond laser optical comb, in which a phase shift value due to atmospheric turbulence is obtained from reflected light of transmission light generated from a femtosecond laser optical comb and the transmission light is pre-distorted on the basis of the phase shift value, thereby pre-compensating, in a transmission end, for phase noise due to atmospheric turbulence.