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WO/2014/058898A1 |
An optical receiver comprising a frontend configured to receive an optical signal and convert the optical signal into a plurality of digital electrical signals comprising a plurality of spectrally shaped subcarrier signals carrying symbo...
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WO/2014/058764A1 |
A method for virtualizing an optical network, comprising: abstracting optical resource information corresponding to resources within the optical network, constructing a plurality of candidate paths for one or more optical reachability gr...
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WO/2014/056526A1 |
An optical communication system (10) comprising an optical link (12) comprising an optical fibre (14), a first network element (16) coupled to a first end of the optical link and a second network element (18) coupled to a second end of t...
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WO/2014/058702A1 |
A system (100) and method for fault recovery in a branched optical network is described. In response to a fault, power distribution in channels on recovering digital line segments is adjusted to minimize a merit function based on one or ...
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WO/2014/053175A1 |
Validating a path in an optical layer (20) of a communications network, for client traffic having an associated service level, involves setting (100) an optical quality margin according to the service level associated with that client tr...
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WO/2014/055730A1 |
A filtered laser array assembly generally includes an array of laser emitters coupled between external modulators and an arrayed waveguide grating (AWG). Each of the laser emitters emits light across a plurality of wavelengths including,...
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WO/2014/055889A1 |
The present disclosure describes a method, an apparatus, and a non-transitory computer-readable medium storing a program for measuring characteristics of a WDM system. The method may include obtaining channel characteristics of a channel...
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WO/2014/055475A1 |
An optical network including at least one optical network node that receives an optical signal for either transmission or reception. The optical network node analyzes the optical signal and applies communication protocols necessary for o...
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WO/2014/050064A1 |
In order to add a CDC function to an ROADM system that does not support CDC without stopping a service, an optical communication system is provided with: an optical demultiplexing unit (1-1) for demultiplexing an inputted wavelength-mult...
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WO/2014/044969A1 |
The invention relates to a method for generating a plurality of electrical signals from polychromatic optical signals extracted from a set of optical fibers, a polychromatic signal including a plurality of predetermined wavelengths, an e...
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WO/2014/043689A1 |
Embodiments include, but are not limited to, systems and methods for enabling Orthogonal Frequency Division Multiple Access (OFDMA) in the upstream in an Ethernet Passive Optical Network over Coax (EPoC) network. Embodiments include syst...
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WO/2014/037131A2 |
An optical communication method for transmitting an information signal comprises: sending a plurality of modulated optical signals (3, 4) carrying an information signal from a transmitting apparatus (A) to a receiving apparatus (B) via a...
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WO/2014/038095A1 |
Since it is difficult to transmit optical signal over multiple channels with an improved received signal quality, better system margins, and reduced system outages, a method for transmitting optical signal over multiple channels accordin...
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WO/2014/034165A1 |
[Problem] To provide a selfhomodyne detection communication system capable of using a space division multiplexed signal as a communication signal. [Solution] The present invention relates to a space division multiplexing apparatus (12) t...
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WO/2014/033616A2 |
Topology-defining card units are used to provide optical interconnections between multiple slots of an equipment subrack. An example card unit is adapted for installation in a slot of an equipment subrack having a plurality of slots and ...
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WO/2014/033524A1 |
The invention relates to a method of supporting a transfer of an Optical Network Unit (ONU) between a plurality of Passive Optical Networks (PON). Particularly the invention proposes a method of supporting a transfer of a first ONU in a ...
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WO/2014/035507A2 |
The invention is directed to apparatus, systems and methods enabling a service provider to establish an optical demarcation point located at or within equipment controlled at least in part by a customer's domain such that the service pro...
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WO/2014/035236A1 |
Device for optical telecommunication, comprising: - two mux/demux modules (A;B) mutually connected by an optical guide, each comprising: a first optical part provided with: - a first port with the optical guide connected thereto; and - a...
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WO/2014/029797A1 |
A method and a device for conveying optical data are provided, wherein an optical network unit conveys data to a terminal via dual sideband modulation, wherein the terminal processes only the upper or only the lower sideband received fro...
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WO/2014/027204A1 |
A device and method for controlling light by wavelength in a device with a switch plane and a dispersion plane uses optics providing an imaging function in the dispersion plane, and a Fourier transform function in the switch plane, so as...
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WO/2014/028611A1 |
A system comprising a first optical line terminal (OLT) comprising a first integrated optical network unit (ONU), and a first OLT transceiver, and a second OLT coupled to the first OLT, wherein the second OLT comprises a second integrate...
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WO/2014/022971A1 |
An externally modulated laser, a passive optical communication apparatus and system. The externally modulated laser comprises a laser which includes a partially reflecting mirror (113), a gain medium (112) and a filter (114); the partial...
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WO/2014/023268A1 |
Disclosed are a system architecture for the global optimization of a flexible grid optical network and a global optimization method therefor. The system architecture for the global optimization of a flexible grid optical network provided...
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WO/2014/026182A1 |
A method, system, and computer program for implementing TDD in an EPoC network. Multiple PHY-layers for coax or HFC segments operate cooperatively to establish a constant delay for an upstream path, and a constant delay for a downstream ...
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WO/2014/019797A1 |
An optical network is suggested, comprising a first set of optical fibers, a multimode multiplexer, a multimode amplifier, a multimode demultiplexer, and a second set of optical fibers, wherein the first set of optical fibers is connecte...
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WO/2014/020618A1 |
Methods, systems, and apparatus, for an external cavity FP laser. In one aspect, an apparatus is provided that includes a FP laser diode; a Faraday rotator (FR) coupled to receive an optical output of the FP laser diode and that rotates ...
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WO/2014/019759A1 |
In order to provide allow very fast tuning of an coherent optical receiver, an apparatus for use in optical telecommunications has a coherent optical receiver (TR) with an O/E converter stage (OE1, OE2) adapted to down- convert a receive...
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WO/2014/019721A1 |
In order to provide a scalable architecture for a network node that allows a very high switching capacity, a network node is proposed which has a number of packet optical add drop multiplexers /POADMs/, a number of dual line cards, respe...
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WO/2014/021075A1 |
[Problem] To provide a wavelength multiplexing device and the like that can effectively identify whether impairment occurs at a location before or after a separation and switching module. [Solution] A wavelength multiplexing device (100)...
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WO/2014/020804A1 |
This polarization multiplexing optical transmitter includes: a dividing means (21) for dividing a clock signal having a baud rate frequency; a phase modulating means (8) for phase modulation of an optical signal, using the divided clock ...
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WO/2014/019631A1 |
A method (10) of optimizing optical signal quality in an optical communications link comprising a plurality of sections each comprising an optical amplification apparatus and an optical fibre span, the method comprising: for each section...
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WO/2014/018927A1 |
A multi-port radiator radiates electromagnetic signal in response to a beat frequency of a pair of optical signals. The radiator includes a multitude of optical paths each carrying an optical signal having first and second wavelengths. A...
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WO/2014/017084A1 |
[Problem] To achieve, in optical communication using wavelength division multiplexing, an optical transmission device which is capable of suppressing effects of distortion of waveform and the like generated when an optical signal passes ...
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WO/2014/015915A1 |
In an optical communications network using bandwidth variable wavelength switching, routing and spectrum assignment for a traffic request for x sub-carriers of a super- channel, involves checking (103) for an existing super-channel havin...
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WO/2014/015888A1 |
The invention refers a method and an arrangement for channel set up in an optical network. An optical signal path is configured for a certain optical channel signal (OC1) of a WDM-signal. This channel signal (OC1) is on-off-modulated by ...
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WO/2014/016274A1 |
The system of the invention, comprising: - at least one wavelength division multiplexed passive optical network (WDM- PON) with a head-end optical line terminal (OLT) termed as WDM-PON OLT, arranged to a remote node (RN); and - a plurali...
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WO/2014/015918A1 |
A method of transporting a client signal across an optical transport network (OTN) comprises dividing (201) a received client signal into a plurality of parallel signals at a lower bit rate. The parallel signals are mapped (202) into a r...
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WO/2014/015909A1 |
For a WDM ring network, a node has an optical add drop part (60, 62, 64) and a transponder having a wavelength tunable transmitter (20) for sending a selectable one of the wavelengths in a selectable direction around the ring to a destin...
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WO/2014/017245A1 |
The invention relates to an optical receiver (102) adapted for receiving via a transmission channel an orthogonal frequency-division multiplex optical signal via a plurality of subcarriers. The optical receiver comprises means for perfor...
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WO/2014/012273A1 |
Disclosed are a local area network employing POF networking, and an optical switch and an optical converter therefor. The local area network comprises an optical switch and a plurality of optical converters. The optical switch is provide...
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WO/2014/015129A1 |
Described herein is a wavelength selective switch (WSS) type optical switching device (1) configured for switching input optical beams from input optical fiber ports (3, 5 and 7) to an output optical fiber port (9). Device (1) includes a...
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WO/2014/009886A1 |
A chassis includes a plurality of continuous wave lasers each operable to emit a continuous wave optical beam at the same power as the other lasers, and a plurality of optical couplers operable to input the continuous wave optical beams ...
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WO/2014/009012A1 |
A method and a device for data processing in an optical communication network are provided, wherein in an energy saving mode of a polarization multiplexing system data signals are transmitted or received via one polarization plane; and w...
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WO/2014/009248A1 |
An optical fiber ring having a plurality of passive ring nodes and an active ring node with a switch to interrupt or close the fiber ring, wherein the passive ring nodes are configured to connect an optical feeder section to each directi...
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WO/2014/008712A1 |
A passive optical network and an optical module of an optical network unit thereof are disclosed. The optical network comprises an Optical Line Terminal (OLT), a first Wavelength Division Multiplexing (WDM), a second WDM and a plurality ...
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WO/2014/008659A1 |
Provided is a wavelength negotiation method a multi-wavelength passive optical network, comprising: receiving a wavelength state table broadcast by an OLT through downstream wavelength channels in a multi-wavelength PON system, the wavel...
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WO/2014/008027A1 |
A system, e.g. a reconfigurable electro-optical network, includes input and output waveguides. The input waveguide is configured to receive a first input optical signal including a first modulated input wavelength channel. The output wav...
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WO/2014/006515A2 |
Circuitry for use in a receiver may comprise: a front-end circuit operable to receive an orthogonal frequency division multiplexing (OFDM) symbol on a first number of physical subcarriers. The circuitry may comprise a decoding circuit op...
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WO/2014/008028A1 |
A system, e.g. a reconfigurable optical channel router, includes an input waveguide optically connected to a wavelength demultiplexer. A first input microcavity resonator set including a plurality of microcavity resonators is located adj...
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WO/2014/005315A1 |
Disclosed are a method, device and system for processing service overhead. The method comprises: multiplexing a multi-channel service into a single-channel time division service according to a preset rule; serially extracting specific lo...
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