公开(公告)号：US11105710B2

公开(公告)日：2021-08-31

申请号：US16245851

申请日：2019-01-11

Applicant: Xieon Networks S.à.r.l.

Inventor： Mario Leiria ,  Tiago Mestre

IPC: H04B10/071 ,  G01M11/00 ,  H04J14/02

Abstract: A first optical path and a second optical path have a common path branching point. An OTDR sampling optical signal is emitted into the first optical path and into the second optical path through the common path branching point. At least one predefined optical property of the OTDR sampling optical signal emitted into the second optical path is altered and/or of a reflection of the OTDR sampling optical signal received from the second optical path is altered. An OTDR reflected optical signal resulting from a reflection of the OTDR sampling optical signal on the first optical path and/or from a reflection on the second optical path is detected. The OTDR reflected optical signal is analyzed to determine, based on the at least one predefined optical property, whether the OTDR reflected optical signal resulted from a reflection on the first optical path and/or on the second optical path.

公开(公告)号：US10560189B2

公开(公告)日：2020-02-11

申请号：US15606492

申请日：2017-05-26

Applicant: Xieon Networks S.a.r.l.

Inventor： Lutz Rapp

IPC: H04B10/27 ,  H04B10/2581 ,  H04J14/00 ,  H04J14/04

Abstract: 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 connected via the multimode multiplexer to the multimode amplifier and wherein the multimode amplifier is connected via the multimode demultiplexer to the second set of optical fibers. Accordingly, an optical network element is provided.

公开(公告)号：US10439730B2

公开(公告)日：2019-10-08

申请号：US14890373

申请日：2014-05-12

Applicant: Xieon Networks S.a.r.l.

Inventor： Antonio Napoli ,  Chien-Yu Lin ,  Bernhard Spinnler ,  Vincentius Antonius Johannes Mar Sleiffer

IPC: H04B10/60 ,  H04B10/58 ,  H04B10/2543 ,  H04B10/61

Abstract: A method and device is provided for reducing optical transmission impairments, particularly nonlinear effects, of at least one link Said method comprising the following steps: extracting a phase information (Δθ) from an optical signal (120) received via that at least one link, determining a nonlinear coefficient (γ), associated with the at least one link, based on the phase information (Δθ), applying a control mechanism (202) using the nonlinear coefficient (γ). Furthermore, a communication system is suggested comprising said device.

公开(公告)号：US10313049B2

公开(公告)日：2019-06-04

申请号：US15578543

申请日：2016-06-29

Applicant: Xieon Networks S.à.r.l.

Inventor： Stefano Calabro ,  Bernhard Spinnler

IPC: H04J14/06 ,  H04B10/61 ,  H04B7/0413 ,  H04B10/69 ,  H04B10/2569

Abstract: The present invention relates to signal processing in an optical receiver, in particular to equalization performed in coherent optical receivers. A multiple-input multiple-output (MIMO) equalizer receives and equalizes a plurality of real value signals, for example four sampled electrical baseband tributaries (HI, HQ, VI, VQ). The outputs of the multiple-input multiple-output (MIMO) equalizer provide equalized real or imaginary components of complex signals. The complex signals including the real and imaginary components are then each and individually equalized to remove chromatic dispersion.

公开(公告)号：US10305785B2

公开(公告)日：2019-05-28

申请号：US15309133

申请日：2015-03-31

Applicant: Xieon Networks S.a.r.l.

Inventor： Kaiyuan Huang

IPC: H04L12/26 ,  H04L12/28 ,  G06F15/173 ,  H04L12/707 ,  H04L12/727 ,  H04L12/725 ,  H04L12/721

Abstract: At least one data-stream is re-routed and a network element is provided for re-routing at least one data-stream. A first part and a second part of a data-stream received at a first node and are transmitted to a second node via two different network paths, respectively. The first is transmitted from the first node to the second node via a first network path. A second network path is determined, and the difference between latencies of the first and second network paths is also determined. If the latency of the first network path is larger than the latency of the second network path, the at least one data-stream at the first node is re-routed from the first network path to the second network path provided that the time gap between data packets received by the first node exceeds said difference between latencies.

公开(公告)号：US10256946B2

公开(公告)日：2019-04-09

申请号：US15318603

申请日：2015-06-22

Applicant: Xieon Networks S.a.r.l.

Inventor： Stefano Calabro

IPC: H04L1/00 ,  H03M13/27 ,  H03M13/29 ,  H03M13/39 ,  H03M13/45 ,  H04B10/61 ,  H04J14/02 ,  H04B10/516 ,  H04B10/548

Abstract: Disclosed is a method for decoding an optical data signal. Said optical data signal is phase and amplitude modulated according to a constellation diagram with at least eight constellation points representing non-binary symbols. Said decoding method comprises the following steps: —carrying out a carrier phase recovery of a received signal ignoring the possible occurrence of phase slips, —decoding said signal after phase recovery, wherein in said decoding, possible cycle slips occurring during phase recovery are modelled as virtual input to an equivalent encoder assumed by the decoding scheme. Further disclosed are a related encoding method as well as a receiver and a transmitter.

公开(公告)号：US10177522B2

公开(公告)日：2019-01-08

申请号：US15512728

申请日：2015-08-21

Applicant: Xieon Networks S.a.r.l.

Inventor： Lutz Rapp

IPC: H01S3/00 ,  H01S3/067 ,  H01S3/094 ,  H01S3/10 ,  H01S3/13 ,  H04B10/296 ,  H01S3/0941 ,  H01S3/16

Abstract: Disclosed is a method of Controlling a gain of an optical amplifier comprising a gain medium and at least one pumping device. The method comprises the following steps: determining or predicting a change of input signal power to the amplifier, changing the pump power from an initial pump power level to a new pump power level at a first time instant, the initial pump power level being the pump power level applied to the amplifier prior to the change in input signal power, setting the pump power to a second pump power level at a second time instant, wherein the pump power level is varied in an oscillatory manner for at least one period of time starting at a third time instant and ending at a fourth time instant, wherein said third time instant is identical with or later than said first time instant and said fourth time instant is identical with or earlier than said second time instant.