公开(公告)号：US20160112238A1

公开(公告)日：2016-04-21

申请号：US14885264

申请日：2015-10-16

Applicant: FINISAR CORPORATION

Inventor： William Ling ,  Ilya Lyubomirsky

IPC: H04L27/34 ,  H04L27/36

CPC classification number: H04L27/3411 ,  H04B10/541 ,  H04B10/612 ,  H04B10/616 ,  H04L27/2633 ,  H04L27/2636 ,  H04L27/362

Abstract: A method of transmitting data may include converting a stream of serial data bits into a set of parallel quadrature amplitude modulation (QAM) symbols. The method may additionally include applying a partial discrete Fourier transform-spread technique to transform a block of low-frequency subcarriers into a single-carrier QAM signal. The single-carrier QAM signal may bear information of a first subset of QAM symbols from the set of parallel QAM symbols. The method may additionally include transforming one or more remaining QAM symbols to form one or more subcarriers. Each of the one or more subcarriers may bear information of a corresponding QAM symbol from the one or more remaining QAM symbols. The method may additionally include generating a hybrid signal that includes the single-carrier QAM signal and the one or more subcarriers. The method may additionally include transmitting the hybrid signal.

Abstract translation: 传输数据的方法可以包括将串行数据比特流转换成一组并行正交幅度调制（QAM）符号。 该方法可以另外包括应用部分离散傅里叶变换扩展技术来将低频子载波块变换为单载波QAM信号。 单载波QAM信号可以承载来自该组并行QAM符号的QAM符号的第一子集的信息。 该方法可以另外包括变换一个或多个剩余的QAM符号以形成一个或多个子载波。 所述一个或多个子载波中的每一个可以承载来自所述一个或多个剩余QAM符号的相应QAM符号的信息。 该方法还可以包括生成包括单载波QAM信号和一个或多个子载波的混合信号。 该方法可以另外包括发送混合信号。

公开(公告)号：US09197456B2

公开(公告)日：2015-11-24

申请号：US14527206

申请日：2014-10-29

Applicant: FINISAR CORPORATION

Inventor： Ilya Lyubomirsky ,  Jonathan Paul King

IPC: H03H7/40 ,  H04L25/03

CPC classification number: H04L25/0307 ,  H04B10/0795 ,  H04L25/03019 ,  H04L25/03038 ,  H04L25/03044 ,  H04L25/0305 ,  H04L25/03057 ,  H04L25/03133 ,  H04L25/03885 ,  H04L27/01 ,  H04L2025/0349 ,  H04L2025/03509 ,  H04L2025/03668 ,  H04Q2011/0083

Abstract: A method of blind tap coefficient adaptation includes receiving a digital data signal including random digital data, equalizing a first portion of the digital data signal using a first set of predetermined tap coefficients and a second portion of the digital data signal using a second set of predetermined tap coefficients. The method includes generating a first eye diagram and a second eye diagram from a first portion and a second portion of an equalized signal, respectively. The first eye diagram is compared with the second eye diagram to determine which of the sets of predetermined tap coefficients results in a data signal having a higher signal quality. The method includes inputting to an equalizer as an initial set of tap coefficients the first set of predetermined tap coefficients or the second set of predetermined tap coefficients according to the determination.

Abstract translation: 盲抽头系数适配的方法包括：接收包括随机数字数据的数字数据信号，使用第一组预定抽头系数对数字数据信号的第一部分进行均衡，以及使用第二组预定的抽头系数的数字数据信号的第二部分 抽头系数。 该方法包括分别从均衡信号的第一部分和第二部分生成第一眼图和第二眼图。 将第一眼图与第二眼图进行比较，以确定预定抽头系数中的哪一组导致具有较高信号质量的数据信号。 该方法包括根据该确定，将均衡器作为初始抽头系数集合输入第一组预定抽头系数或第二组预定抽头系数。

公开(公告)号：US20150215047A1

公开(公告)日：2015-07-30

申请号：US14617782

申请日：2015-02-09

Applicant: FINISAR CORPORATION

Inventor： Ilya Lyubomirsky ,  Yasuhiro Matsui ,  Daniel Mahgerefteh

IPC: H04B10/532

CPC classification number: H04B10/532 ,  H04J14/06

Abstract: In some examples, a transmit assembly is described that may include a first optical transmitter, a second optical transmitter, and a polarizing beam combiner. The first optical transmitter may be configured to emit a first optical data signal centered at a first frequency. The second optical transmitter may be configured to emit a second optical data signal centered at a second frequency offset from the first frequency by a nominal offset n. The polarizing beam combiner may be configured to generate a dual carrier optical data signal by polarization interleaving the first optical data signal with the second optical data signal. An output of the polarizing beam combiner may be configured to be communicatively coupled via an optical transmission medium to a polarization-insensitive receive assembly.

Abstract translation: 在一些示例中，描述了可以包括第一光发射器，第二光发射器和偏振光束组合器的发射组件。 第一光发射器可以被配置为发射以第一频率为中心的第一光学数据信号。 第二光发射机可以被配置为以第一频率偏移标称偏移n发射以第二频率偏移为中心的第二光数据信号。 偏振光束组合器可以被配置为通过利用第二光学数据信号对第一光学数据信号进行极化交织来产生双载波光学数据信号。 偏振光束组合器的输出可以被配置为经由光传输介质通信耦合到偏振不敏感的接收组件。

公开(公告)号：US20150117872A1

公开(公告)日：2015-04-30

申请号：US14527349

申请日：2014-10-29

Applicant: FINISAR CORPORATION

Inventor： Ilya Lyubomirsky

IPC: H04B10/61

CPC classification number: H04B10/6166 ,  H04B10/614 ,  H04B10/6151 ,  H04B10/616 ,  H04J14/02 ,  H04J14/06

Abstract: An example embodiment includes optical receiver that includes a polarization beam splitter (PBS), a polarization controller, and a forward error correction (FEC). The PBS is configured to split a received optical signal having an unknown polarization state into two orthogonal polarizations (x′-polarization and y′-polarization). The polarization controller includes no more than two couplers and no more than two phase shifters per wavelength channel of the x′-polarization and the y′-polarization. The polarization controller is configured to demultiplex the x′-polarization and the y′-polarization into a first demultiplexed signal having an first polarization on which a data signal is modulated and a second demultiplexed signal having a second, orthogonal polarization on which a pilot carrier oscillator signal is encoded. The FEC decoder module is configured to correct a burst of errors resulting from resetting one of the phase shifters based on error correction code (ECC) data encoded in the data signal.

Abstract translation: 示例实施例包括包括偏振分束器（PBS），偏振控制器和前向纠错（FEC）的光接收器。 PBS被配置为将具有未知极化状态的接收光信号分裂为两个正交偏振（x'-极化和y-偏振）。 偏振控制器包括不超过两个耦合器，并且每个x'极化和y'极化的每个波长通道不超过两个移相器。 偏振控制器被配置为将x'极化和y'极化解复用为具有调制数据信号的第一极化的第一解复用信号和具有第二正交偏振的第二解复用信号，导频载波 振荡器信号被编码。 FEC解码器模块被配置为基于在数据信号中编码的纠错码（ECC）数据来校正由移相器中的一个复位产生的错误脉冲串。

公开(公告)号：US10148364B2

公开(公告)日：2018-12-04

申请号：US15225742

申请日：2016-08-01

Applicant: FINISAR CORPORATION

Inventor： Ilya Lyubomirsky

IPC: H04B10/61 ,  H04J14/06 ,  H04J14/02

CPC classification number: H04B10/6166 ,  H04B10/614 ,  H04B10/6151 ,  H04B10/616 ,  H04J14/02 ,  H04J14/06

Abstract: An example embodiment includes optical receiver that includes a polarization beam splitter (PBS), a polarization controller, and a forward error correction (FEC). The PBS is configured to split a received optical signal having an unknown polarization state into two orthogonal polarizations (x′-polarization and y′-polarization). The polarization controller includes no more than two couplers and no more than two phase shifters per wavelength channel of the x′-polarization and the y′-polarization. The polarization controller is configured to demultiplex the x′-polarization and the y′-polarization into a first demultiplexed signal having an first polarization on which a data signal is modulated and a second demultiplexed signal having a second, orthogonal polarization on which a pilot carrier oscillator signal is encoded. The FEC decoder module is configured to correct a burst of errors resulting from resetting one of the phase shifters based on error correction code (ECC) data encoded in the data signal.

公开(公告)号：US09438460B2

公开(公告)日：2016-09-06

申请号：US14885264

申请日：2015-10-16

Applicant: FINISAR CORPORATION

Inventor： William Ling ,  Ilya Lyubomirsky

IPC: H04L5/12 ,  H04L27/34 ,  H04L27/36

CPC classification number: H04L27/3411 ,  H04B10/541 ,  H04B10/612 ,  H04B10/616 ,  H04L27/2633 ,  H04L27/2636 ,  H04L27/362

Abstract: A method of transmitting data may include converting a stream of serial data bits into a set of parallel quadrature amplitude modulation (QAM) symbols. The method may additionally include applying a partial discrete Fourier transform-spread technique to transform a block of low-frequency subcarriers into a single-carrier QAM signal. The single-carrier QAM signal may bear information of a first subset of QAM symbols from the set of parallel QAM symbols. The method may additionally include transforming one or more remaining QAM symbols to form one or more subcarriers. Each of the one or more subcarriers may bear information of a corresponding QAM symbol from the one or more remaining QAM symbols. The method may additionally include generating a hybrid signal that includes the single-carrier QAM signal and the one or more subcarriers. The method may additionally include transmitting the hybrid signal.

Abstract translation: 传输数据的方法可以包括将串行数据比特流转换成一组并行正交幅度调制（QAM）符号。 该方法可以另外包括应用部分离散傅里叶变换扩展技术来将低频子载波块变换为单载波QAM信号。 单载波QAM信号可以承载来自该组并行QAM符号的QAM符号的第一子集的信息。 该方法可以另外包括变换一个或多个剩余的QAM符号以形成一个或多个子载波。 所述一个或多个子载波中的每一个可以承载来自所述一个或多个剩余QAM符号的相应QAM符号的信息。 该方法还可以包括生成包括单载波QAM信号和一个或多个子载波的混合信号。 该方法可以另外包括发送混合信号。

公开(公告)号：US09385815B2

公开(公告)日：2016-07-05

申请号：US14617782

申请日：2015-02-09

Applicant: FINISAR CORPORATION

Inventor： Ilya Lyubomirsky ,  Yasuhiro Matsui ,  Daniel Mahgerefteh

IPC: H04B10/04 ,  H04B10/00 ,  H04B10/06 ,  H04B10/532 ,  H04J14/06

CPC classification number: H04B10/532 ,  H04J14/06

Abstract: In some examples, a transmit assembly is described that may include a first optical transmitter, a second optical transmitter, and a polarizing beam combiner. The first optical transmitter may be configured to emit a first optical data signal centered at a first frequency. The second optical transmitter may be configured to emit a second optical data signal centered at a second frequency offset from the first frequency by a nominal offset n. The polarizing beam combiner may be configured to generate a dual carrier optical data signal by polarization interleaving the first optical data signal with the second optical data signal. An output of the polarizing beam combiner may be configured to be communicatively coupled via an optical transmission medium to a polarization-insensitive receive assembly.

公开(公告)号：US09628216B2

公开(公告)日：2017-04-18

申请号：US14943926

申请日：2015-11-17

Applicant: Finisar Corporation

Inventor： Ilya Lyubomirsky ,  Christopher Kocot ,  Jonathan Paul King ,  Sascha Hallstein ,  Brendan Hamel-Bissell

IPC: H04J14/02

CPC classification number: H04J14/0257 ,  H04J14/0221

Abstract: A method of transmitting data may include receiving feedback information that includes effective channel bandwidths, signal-to-noise ratios (SNRs) associated with multiple optical channels on an optical link, and individual SNRs associated with subcarriers on each optical channel. The method may include determining multiple subcarrier power allocation schemes based on the feedback information. Each subcarrier power allocation scheme may be associated with a corresponding optical channel from the multiple optical channels and may be configured to allocate a signal power among subcarriers configured to transmit on the corresponding optical channel. The method may include determining, based on the feedback information, an optical power allocation scheme configured to allocate an optical power among the multiple optical channels. The method may include transmitting data on the multiple optical channels based on the multiple subcarrier power allocation schemes and the optical power allocation scheme.

公开(公告)号：US09596104B2

公开(公告)日：2017-03-14

申请号：US14949874

申请日：2015-11-23

Applicant: FINISAR CORPORATION

Inventor： Ilya Lyubomirsky ,  Jonathan Paul King

IPC: H04L27/22 ,  H04L25/03 ,  H04B10/079 ,  H04L27/01 ,  H04Q11/00

CPC classification number: H04L25/0307 ,  H04B10/0795 ,  H04L25/03019 ,  H04L25/03038 ,  H04L25/03044 ,  H04L25/0305 ,  H04L25/03057 ,  H04L25/03133 ,  H04L25/03885 ,  H04L27/01 ,  H04L2025/0349 ,  H04L2025/03509 ,  H04L2025/03668 ,  H04Q2011/0083

Abstract: A method of blind tap coefficient adaptation includes receiving a digital data signal including random digital data, equalizing a first portion of the digital data signal using a first set of predetermined tap coefficients and a second portion of the digital data signal using a second set of predetermined tap coefficients. The method includes generating a first eye diagram and a second eye diagram from a first portion and a second portion of an equalized signal, respectively. The first eye diagram is compared with the second eye diagram to determine which of the sets of predetermined tap coefficients results in a data signal having a higher signal quality. The method includes inputting to an equalizer as an initial set of tap coefficients the first set of predetermined tap coefficients or the second set of predetermined tap coefficients according to the determination.

Abstract translation: 盲抽头系数适配的方法包括：接收包括随机数字数据的数字数据信号，使用第一组预定抽头系数对数字数据信号的第一部分进行均衡，以及使用第二组预定的抽头系数的数字数据信号的第二部分 抽头系数。 该方法包括分别从均衡信号的第一部分和第二部分生成第一眼图和第二眼图。 将第一眼图与第二眼图进行比较，以确定预定抽头系数中的哪一组导致具有较高信号质量的数据信号。 该方法包括根据该确定，将均衡器作为初始抽头系数集合输入第一组预定抽头系数或第二组预定抽头系数。

公开(公告)号：US09407376B2

公开(公告)日：2016-08-02

申请号：US14527349

申请日：2014-10-29

Applicant: FINISAR CORPORATION

Inventor： Ilya Lyubomirsky

IPC: H04B10/61 ,  H04J14/06

CPC classification number: H04B10/6166 ,  H04B10/614 ,  H04B10/6151 ,  H04B10/616 ,  H04J14/02 ,  H04J14/06

Abstract: An example embodiment includes optical receiver that includes a polarization beam splitter (PBS), a polarization controller, and a forward error correction (FEC). The PBS is configured to split a received optical signal having an unknown polarization state into two orthogonal polarizations (x′-polarization and y′-polarization). The polarization controller includes no more than two couplers and no more than two phase shifters per wavelength channel of the x′-polarization and the y′-polarization. The polarization controller is configured to demultiplex the x′-polarization and the y′-polarization into a first demultiplexed signal having an first polarization on which a data signal is modulated and a second demultiplexed signal having a second, orthogonal polarization on which a pilot carrier oscillator signal is encoded. The FEC decoder module is configured to correct a burst of errors resulting from resetting one of the phase shifters based on error correction code (ECC) data encoded in the data signal.

Abstract translation: 示例实施例包括包括偏振分束器（PBS），偏振控制器和前向纠错（FEC）的光接收器。 PBS被配置为将具有未知极化状态的接收光信号分裂为两个正交偏振（x'-极化和y-偏振）。 偏振控制器包括不超过两个耦合器，并且每个x'极化和y'极化的每个波长通道不超过两个移相器。 偏振控制器被配置为将x'极化和y'极化解复用为具有调制数据信号的第一极化的第一解复用信号和具有第二正交偏振的第二解复用信号，导频载波 振荡器信号被编码。 FEC解码器模块被配置为基于在数据信号中编码的纠错码（ECC）数据来校正由移相器中的一个复位产生的错误脉冲串。