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公开(公告)号：US11137317B2
公开(公告)日：2021-10-05
申请号：US15728974
申请日：2017-10-10
Applicant: Xieon Networks S.à.r.l.
Inventor： Andreas Fricke
IPC: G01M11/00
Abstract: An optical time domain reflectometer for determining properties of an optical transmission fiber, the optical time domain reflectometer comprising an electro-absorption modulator comprising a waveguide and two electrodes, wherein the waveguide is arranged between the electrodes, a light source configured for emitting sampling light into the waveguide, wherein the waveguide is connected or to be connected between the fiber and the light source, and a control unit for controlling the operation of the light source and a modulation voltage between the electrodes. The electro-absorption modulator is capable of assuming an absorption state, wherein the electro-absorption modulator is further configured for receiving reflected light pulses resulting from the reflection of the pulses of sampling light in the fiber, wherein the absorption of reflected light pulses in the electro-absorption modulator results in the creation of a photocurrent between the electrodes.
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公开(公告)号：US10753824B2
公开(公告)日：2020-08-25
申请号：US16341731
申请日：2017-11-21
Applicant: Xieon Networks S.à.r.l.
Inventor： Lutz Rapp
IPC: G01M11/00
Abstract: A method of distinguishing whether a detected change in reflected power in an optical time domain reflectometer (OTDR) measurement carried out in a fiber optic transmission system (16) using an OTDR is caused by a an event causing actual attenuation or a change in a mode field diameter, comprising the steps of emitting a succession of first sampling light pulses of a first wavelength into the fiber optic transmission system (16) while a pumping signal with a second wavelength is emitted into the fiber optic transmission system (16), and measuring a first OTDR trace (34′) resulting from the reflection of the first sampling light pulses in the fiber optic transmission system (16), such that the first sampling light pulses and their reflections interact with the pumping signal via stimulated Raman scattering. The method further comprises a step (36) of determining, based at least on information extracted from the first OTDR trace (34′), whether the detected change is mainly due to an event causing actual attenuation or to a change in the mode field diameter in the fiber optic transmission system (16).
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公开(公告)号：US10511402B2
公开(公告)日：2019-12-17
申请号：US16096215
申请日：2017-11-21
Applicant: Xieon Networks S.à.r.l.
Inventor： Antonio Eira , João Manuel Ferreira Pedro
Abstract: The proposed invention is in the area of managing resources in optical transport networks, for example in the area of in-operation media channel format and spectrum management. For this purpose, the type of Media Channel Format is determined for each of a plurality of candidate paths, wherein each candidate path connects a pair of nodes in an optical transport network. Then, the expected weight describing traffic volume of each of the candidate paths is determined, and a spectrum share is assigned to each link of each of the candidate paths based on the determined Media Channel Formats and determined weights. In this way, spectrum shares assigned to different links and candidate paths can be used for efficiently assigning a band spectrum to each of the Media Channel Formats of the candidate paths.
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公开(公告)号：US10256841B2
公开(公告)日：2019-04-09
申请号：US15533912
申请日：2015-12-18
Applicant: Xieon Networks S.à.r.l.
Inventor： Heinrich Von Kirchbauer , Stephan Witte , Stefano Calabro , Bernhard Spinnler
Abstract: An encoder encodes digital data, said encoder includes one or more component encoders, one or more interconnections between component encoders, one or more inputs and one or more outputs. The encoder is configured to carry out the following steps: combining internal input bits received via an interconnection and external input bits received via a corresponding input, to assemble a local information word, encoding the local information word such as to generate a local code word, outputting a reduced local code word and handling the same reduced local code word over to the interconnect for forwarding the same reduced local code word to another component encoder or to itself, wherein the encoder is configured to forward on each interconnect the bits of the reduced local code in parallel but with delays that are mutually different for at least a subset of the reduced local code word bits.
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公开(公告)号：US20210194593A1
公开(公告)日：2021-06-24
申请号：US16074287
申请日：2017-02-28
Applicant: XIEON NETWORKS S.À.R.L.
Inventor： Lutz RAPP
IPC: H04B10/54 , H04B10/61 , H04B10/2537
Abstract: Disclosed herein is a method of encoding and/or decoding data for optical data transmission along a transmission link, as well as corresponding transmitters and receivers. The data is encoded based on an adaptive constellation diagram in a 2-D plane, said constellation diagram including a first and a second pair of symbols, wherein the symbols of the first pair of symbols are located at opposite sides of the origin of the 2-D plane at a first distance di from each other, and wherein the symbols of the second pair of symbols are located at opposite sides of the origin of the 2-D plane at a second distance d2 from each other. The method comprises a step of adapting the constellation diagram by varying the ratio of the first and second distances d1, d2 such as to minimize or nearly minimize a bit error rate in the transmitted data.
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Patent Agency Ranking
公开(公告)号：US10917170B2
公开(公告)日：2021-02-09
申请号：US16091787
申请日：2017-03-23
Applicant: Xieon Networks S.à.r.l.
Inventor： Danish Rafique , Stefano Calabró
IPC: H04B10/50 , H04B10/516 , H04J14/02 , H04B10/079 , H04L27/34 , H04L5/00 , H03M13/25 , H04L27/36 , H04L1/00 , H04J14/06
Abstract: Disclosed herein is a method for transmitting digital data in a super channel, in which a set of carriers are packed in a predetermined bandwidth. The set of carriers comprises higher and lower edge carriers having the highest and lowest wavelengths, respectively, among said set of earners, wherein data is transmitted via the higher and lower edge carriers using a corresponding modulation format, each modulation format using a constellation diagram comprising a number of symbols, wherein a binary address is associated with each symbol. Said method comprises the steps of: separating digital data to be transmitted via each of said higher and lower edge carriers into corresponding first and second data streams, and for each of said higher and lower edge carriers, mapping the data of the first data stream to predetermined first bit positions within the binary symbol addresses and the data of the second data stream to predetermined second bit positions within the binary symbol addresses, wherein said first bit positions are bit positions which have an error probability less than the average error probability of all bit positions.
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公开(公告)号：US10305596B2
公开(公告)日：2019-05-28
申请号：US14356791
申请日：2012-09-07
Applicant: Erich Gottwald , Harald Rohde , Thomas Treyer
Inventor： Erich Gottwald , Harald Rohde , Thomas Treyer
IPC: H04J14/02 , H04B10/40 , H04B10/272 , H04B10/43 , H04B10/61
Abstract: A method for data processing of an optical network unit is provided, the method comprising the steps of receiving a configuration information at the optical network unit, adjusting a light signal to a wavelength or wavelength range indicated by the configuration information, demodulating an incoming optical signal by means of the light signal, mixing the demodulated incoming optical signal with a signal generated by an oscillator and generating a modulated optical upstream signal modulating the light signal by means of a software radio, so that the resulting optical upstream frequency can be shifted with respect to the frequency of the local oscillator by a programmable amount. Furthermore, an according device and a communication system are suggested comprising at least one such device.
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8.发明授权公开(公告)号：US11303381B2
公开(公告)日：2022-04-12
申请号：US16084461
申请日：2017-03-14
Applicant: Xieon Networks S.à.r.l.
Inventor： Danish Rafique , Bernhard Spinnler
Abstract: Disclosed is a receiver for receiving an optical signal comprising a plurality of carriers within a predetermined frequency band. The receiver comprises means for sampling and converting each of the carriers into a set of corresponding digital signals, and a digital processing unit for processing said digital signals of said set of digital signals such as to mitigate transmission impairments of the corresponding optical carriers based on corresponding processing parameters. The digital processing unit is configured for determining such processing parameters by carrying out a corresponding parameter derivation procedure based on one of the digital signals of said set of digital signals. The processing unit is configured for sharing thus determined processing parameters for processing of other digital signals among said set of digital signals based on said shared determined processing parameters, or processing parameters derived from said shared determined processing parameters.
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公开(公告)号：US11088775B2
公开(公告)日：2021-08-10
申请号：US16462845
申请日：2017-11-21
Applicant: Xieon Networks S.à.r.l.
Inventor： Danish Rafique , Lutz Rapp
IPC: H04J14/02
Abstract: Disclosed herein is a method of transmitting a data stream from a first location to a second location through an optical network, as well as a corresponding performance monitoring unit, a transmitting arrangement and a receiving arrangement. The method comprises the steps of transmitting said data stream from said first location to said second location along a working path, wherein said data stream is transmitted in the form of a super channel comprising a number of n wavelengths within a predefined reserved wavelength range, monitoring the performance of the transmission based on the super channel signal received at said second location, and in case the performance is observed to drop below a predetermined performance threshold, unburdening the super channel from a part of said data stream while maintaining the reserved wavelength range for said super channel, by redirecting said part of the data stream for transmittal along at least one restoration path connecting said first and second locations, and transmitting the remainder of said data stream within the super channel on a number of wavelengths that is less than n, and/or with a reduced transmission rate for at least some of the wavelengths in said super channel.
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公开(公告)号：US20210204042A1
公开(公告)日：2021-07-01
申请号：US17181903
申请日：2021-02-22
Applicant: Xieon Networks S.à.r.l.
Abstract: An optical network includes an arrangement of optical nodes. An optical node of the arrangement, and corresponding method, perform optical connectivity discovery and negotiation-less optical fiber continuity verification in the optical network. An overall topology of optical connectivity provisioned for the arrangement is discovered by the optical node based on messages received from a management network communicatively coupling the optical nodes to each other. The optical node synchronizes, temporally and sequentially, with the other optical nodes based on the messages received, assigns fiber of the overall topology, based on a verification sequencing method, to verification slots of a verification sequence, and verifies continuity of fiber according to the verification slots of the verification sequence. The discovery, synchronization, and assignment operations enable the optical node and peer node to perform the optical fiber continuity verification in a symmetric, decentralized, and negotiation-less manner.
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