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WO/2015/027903A1 |
An optical transmitter multiplexes multiple optical channels for transmission over an optical communication medium. The spectrum of modulated signal in each optical channel is lowpass filtered in the electrical (digital) domain at half t...
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WO/2015/029091A1 |
An optical transmission apparatus (1_1) of the present invention is provided with: a first transmission unit (11_1), which transmits first optical transmission signals (21_1); a second transmission unit (11_2), which transmits second opt...
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WO/2015/031342A1 |
A passive optical network includes a central office providing subscriber signals; a fiber distribution hub including an optical power splitter and a termination field; and a drop terminal. Distribution fibers have first ends coupled to o...
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WO/2015/024776A1 |
Proposed is an optical transmitter arrangement of a self-seeding concept with colourless transmitters in an optical access network. An optical transmission unit generates an optical signal comprising a first signal component having a pol...
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WO/2015/024238A1 |
A wavelength selective switch comprises N input ports, an input side fiber array, an input side collimator array, an input side beam deformation and polarization conversion component, an input side wave-separating component, an input sid...
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WO/2015/026807A1 |
Methods and systems for modulating an amplifier power supply to efficiently attain amplified RF output power with much lower power dissipation than existing amplifiers.
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WO/2015/024595A1 |
An optical switch (10) comprising: inputs (12) to receive input optical signals at respective wavelengths and having planar wavefronts; conversion apparatus (14) to convert each input optical signal into a respective optical signal havin...
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WO/2015/026801A1 |
A remote node system with an amplitude modulation (AM) star architecture is formed between a remote node and a plurality of field nodes split from the remote CCAP node. In embodiments, an R-CCAP node can be combined with amplitude modula...
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WO/2015/023948A1 |
An optical line terminal (OLT) comprises a receiver configured to receive a first message, a processor coupled to the receiver and configured to process the first message, and generate a second message based on the first message, wherein...
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WO/2015/022034A1 |
A method of automatically tuning subcarriers of a superchannel transmission. The method comprises determining (71) a received parameter of transmission quality of one or more of the plurality of subcarriers. The method further comprises ...
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WO/2015/018947A1 |
The present disclosure relates to system applications of multicore optical fibers. One embodiment relates to a base transceiver station for a wireless telecommunication system comprising a plurality of antenna units arranged in a MIMO co...
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WO/2015/006981A1 |
An optical signal to noise ratio (OSNR) detection method, device and system, which relate to the field of communications and can reduce OSNR measurement costs. The method comprises: acquiring two sets of signals, i.e. Ex1 and Ey1, Ex2 an...
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WO/2015/007346A1 |
A method of local path protection in a node on a shared alternative path of a network (1). The method comprising receiving (201) a signal switched on a primary label switched path LSP. The signal is switched by lambda-switching or time-d...
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WO/2015/009825A1 |
A distributed wave division multiplexing system includes a first multiplexing device and multiple second multiplexing devices. The first multiplexing device separates Y number of subscriber signals carried over an input line onto X numbe...
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WO/2015/008512A1 |
Provided is a transmission device with which it is possible to solve the problem of an increase in the size and cost of a communication device. Light monitoring units (331A and 331B) are provided in correspondence with each of multiple p...
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WO/2015/007422A1 |
Symmetric multi-processor (SMP) nodes are dynamically configured via SMP sockets that use SMP optically-connected switches to dynamically connect SMP optically-connected links connected to the SMP nodes to form SMP domains based on best ...
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WO/2015/004828A1 |
An optical receiver (1) of the present invention is provided with: a local oscillator (11) that outputs local oscillation light (22); an optical mixer (12), which has multiple signal light (21) and the local oscillation light (22) inputt...
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WO/2015/003746A1 |
A node (20, 25) for a single fiber bidirectional WDM optical ring network has a first optical protection switch (100) having first and second ports for coupling to the single fiber bidirectional ring, while providing a pass through optic...
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WO/2014/209466A1 |
Techniques are presented herein to facilitate higher bandwidth communications in a data center using existing multi-mode fibers and full-duplex optical communication techniques. A first device transmits to a second device a first optical...
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WO/2014/205636A1 |
The present invention is applicable to in the technical field of communications, and provides an optical module and an optical network system. A first chip is disposed on a lower cover plate, and a first upper cover covers an upper cladd...
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WO/2014/201684A1 |
Provided are an optical communication method and apparatus. The method is executed in a communication node comprising an input optical modulator array and an output optical modulator array; the input optical modulator array comprises N i...
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WO/2014/203789A1 |
This invention substantially reduces the hardware complexity of an optical add-drop multiplexer, in an optical node, that can drop desired signals from input optical fibers or add desired signals to output optical fibers leading away fro...
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WO/2014/201700A1 |
The present invention relates to an optical line terminal, an optical network unit, an optical network system and a signal processing method. The optical line terminal comprises: a laser, a combiner, an optical amplifier, an optical modu...
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WO/2014/201607A1 |
An optical signal transmission method and device, and an optical transmitter. The optical signal transmission method comprises: acquiring a power of a first optical signal correspondingly output by each carrier after a modulator modulate...
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WO/2014/205394A1 |
An apparatus comprises a plurality of transmitters configured to transmit waves at a plurality of wavelengths, and a multiplexer coupled to the transmitters, comprising first ports and second ports, and configured to receive, via the fir...
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WO/2014/202113A1 |
A method for managing packet optical traffic passing through a packet optical network node. The method, performed at the packet optical network node, comprises setting-up (102) a first end-to-end, E2E, optical wavelength switched path be...
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WO/2014/199384A1 |
A voltage controlled optical directional coupler (VCODC) having a coupling ratio that can be adjusted to any desired value through voltage tuning is disclosed. The VCODC may include a first optical hybrid coupler and a second optical hyb...
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WO/2014/198298A1 |
Apparatus (10) for an optical communications network has optical paths for optical traffic, and optical ports (20,40), one of which is an unused input port (20). A security monitoring system (30) has a blocking part (50) comprising an in...
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WO/2014/199601A1 |
When using a polarization separator which updates filter coefficients by CMA, since distortion of the constellation of a reproduced received optical signal increases if the optical SNR of the received optical signal is low, this polariza...
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WO/2014/201343A1 |
A tunable laser with multiple in-line sections generally includes a semiconductor laser body with a plurality of in-line laser sections each configured to be driven independently to generate laser light at a wavelength within a different...
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WO/2014/198011A1 |
The present application provides an optical device and an optical network system. The optical device comprises an optical transmission device array, a planar optical waveguide, a first lens array, a wavelength division multiplexing optic...
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WO/2014/196909A1 |
Embodiments herein relate to a method in a network unit (14) for monitoring a fiber line between a radio base station (10) and a radio head (12) in a Fiber to the Radio Head communications network. The Fiber to the Radio Head communicati...
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WO/2014/194505A1 |
An embodiment of the present invention provides a method for establishing a wavelength connection, comprising: an end node receiving a request message for establishing a fourth wavelength connection from an upstream node, wherein the req...
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WO/2014/196179A1 |
This optical receiver is provided with: a coherent detection means for receiving a plurality of phase modulation signals modulated using data corresponding to a plurality of output light beams outputted from a first light source, perform...
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WO/2014/196907A1 |
A method performed by a transceiver for use in a fibre network for sending and/or receiving signals on the fibre network. The transceiver comprises an SCM device; a laser diode; a Red-Blue Filter, RBF, having a red, a blue and a common c...
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WO/2014/194507A1 |
An optical frequency monitoring device comprises: a coupler (110), used for equally dividing a first optical signal obtained by multiplexing and demultiplxing a received optical signal into a second optical signal and a third optical sig...
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WO/2014/187482A1 |
A passive optical network having resilience in the event of optical fibre damage or cuts, comprising an optical line terminal connected to a plurality of optical network terminals by an optical fibre arranged in a ring. The optical line ...
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WO/2014/189107A1 |
Provided is a signal processing method comprising: a step for acquiring a plurality of Stokes parameters relating to a polarized wave defined with an X-polarized wave and a Y-polarized wave included in a dual-polarization phase-shift key...
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WO/2014/189423A1 |
An optical device, OD,for partitioning a received signal and outputting the partitions via two outputs. An optical distribution network comprising at least two Optical Network Terminations, ONTs, the ONTs being connected to the CO by the...
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WO/2014/183504A1 |
A method of Noisy Window and associated management messages to support set splitting if activating ONUs with uncalibrated transmitter, offering a power grant for unmodulated upstream transmission, measuring the average received optical p...
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WO/2014/184331A1 |
An optical transmitter comprising a semiconductor laser diode, and a feedback loop to control the temperature of the laser diode automatically, this feedback loop comprising: a heater for heating the laser diode, a temperature sensor to ...
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WO/2014/183248A1 |
The present invention provides a receiving device and an optical switching network apparatus. The receiving device comprises: multiple selection modules, quick optical switches separately connected to the selection modules, an output mod...
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WO/2014/186601A1 |
An optical line terminal (OLT) in a time and wavelength division multiplexed (TWDM) passive optical network (PON). The OLT comprises a first optical port, a second optical port, and a processor. The first optical port is configured to co...
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WO/2014/186758A1 |
An apparatus comprising a first tunable transmitter array comprising a first tunable transmitter and a second tunable transmitter and a cyclic array waveguide grating (AWG) wavelength router coupled to the first tunable transmitter array...
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WO/2014/180447A1 |
A bandwidth map update method and device, said method comprising: a master node receives a bandwidth report carried by a control frame and then creates a new bandwidth map, creates a new resource status table, and sets the resource statu...
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WO/2014/182081A1 |
One embodiment according to the present invention provides a hybrid optical line sharing system comprising: a baseband unit (BBU) group comprising a plurality of BBU devices, wherein each BBU device respectively receives wireless communi...
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WO/2014/180273A1 |
An optical signal processing method, optical module, OLT optical signal processing method and OLT are disclosed in the embodiments of the present invention. The optical module comprises two photoelectric transceiver units and a wavelengt...
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WO/2014/179927A1 |
A wavelength allocation method and apparatus. The wavelength allocation method comprises: an optical line terminal receiving operating parameter values sent by a current on-line optical network unit, the operational parameter values bein...
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WO/2014/180253A1 |
An optical component and method supporting the existence of two kinds of passive optical networks relate to passive optical network optical line terminal (OLT) technology. The optical component disclosed by the present invention includes...
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WO/2014/183126A1 |
In one embodiment, method of photonic packet switching includes receiving, by a photonic switching fabric from a first top-of-rack (TOR) switch, a destination port request corresponding to a first photonic packet and a first period of ti...
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