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71. 发明授权

US09553675B2 Frequency domain coded modulation with polarization interleaving for fiber nonlinearity mitigation in digital sub-carrier coherent optical communication systems 有权
标题翻译：在数字副载波相干光通信系统中，用于光纤非线性缓解的偏振交织的频域编码调制
公开(公告)号：US09553675B2
公开(公告)日：2017-01-24
申请号：US14754521
申请日：2015-06-29
申请人： Infinera Corporation
发明人： Abdullah S. Karar , Han Sun , Ahmad Awadalla , Kuang-Tsan Wu
IPC分类号： H04B10/00 , H04B10/532 , H04B10/61
CPC分类号： H04B10/532 , H04B10/5055 , H04B10/6162 , H04J14/06
摘要： An optical transmitter may receive and encode a first group of bits into first encoded data and second encoded data. The optical transmitter may supply a first sub-carrier carrying a first symbol and a second sub-carrier carrying a second symbol. The first symbol and the second symbol may be based on the first encoded data and the second encoded data, respectively, such that the first sub-carrier has a first polarization state comprising first and second polarization components, and the second sub-carrier has a second polarization state comprising first and second polarization components. The first polarization state may be substantially orthogonal to the second polarization state. An optical receiver may receive the first symbol via the first sub-carrier, may receive the second symbol via the second sub-carrier, may decode the first symbol and the second symbol into a second group of bits, and may output the second group of bits.
摘要翻译：光发射机可以将第一组比特接收和编码为第一编码数据和第二编码数据。光发射机可以提供承载第一符号的第一子载波和承载第二符号的第二子载波。第一符号和第二符号可以分别基于第一编码数据和第二编码数据，使得第一子载波具有包括第一和第二偏振分量的第一偏振状态，并且第二子载体具有第二偏振状态包括第一和第二偏振分量。第一偏振状态可以基本上与第二偏振状态正交。光接收机可以经由第一子载波接收第一符号，经由第二子载波接收第二符号，可以将第一符号和第二符号解码为第二组比特，并且可以输出第二组位。

72. 发明授权

US09553674B2 Optical transmitter and method of optical transmission 有权
标题翻译：光发射机和光传输方法
公开(公告)号：US09553674B2
公开(公告)日：2017-01-24
申请号：US14556266
申请日：2014-12-01
申请人： FUJITSU LIMITED
发明人： Takahito Tanimura , Takeshi Hoshida
IPC分类号： H04B10/532 , H04J14/06
CPC分类号： H04B10/532 , H04J14/06
摘要： An optical transmitter includes a circuit that controls a first frequency component and a second frequency component that are contained in an optical signal to be transmitted to be in different polarization states from each other.
摘要翻译：一种光发射机包括控制要传输的光信号中包含的彼此处于不同极化状态的第一频率分量和第二频率分量的电路。

73. 发明申请

US20170019181A1 Optical Component 有权
标题翻译：光学元件
公开(公告)号：US20170019181A1
公开(公告)日：2017-01-19
申请号：US15125915
申请日：2015-03-05
申请人： Oclaro Technology Limited
发明人： Barrie Flintham , Adrian Perrin Janssen , Stephen Gardner , Andrew Cannon Carter
IPC分类号： H04B10/50 , G02B6/42 , G02B6/27 , H04B10/532 , H04B10/61
CPC分类号： H04B10/5053 , G02B6/2766 , G02B6/2773 , G02B6/4213 , G02B6/4214 , G02F2203/48 , H04B10/532 , H04B10/614
摘要： Methods and apparatus for use in coherent transmission and reception of optical data signals. An integrated optics block (100) for use in a coherent optical transmitter comprising: a beam splitter (102) configured to split an input light signal into first and second input light signals, to output the first input light signal for use in an optical transmitter chip and to output the second input light signal for use as a local oscillator signal; a polarisation combiner (104) configured to combine first and second received modulated light signals to form an output; and a polarisation rotator (106) configured to rotate the polarisation of the second modulated light signal such that it is substantially orthogonal to the polarisation of the first modulated light signal prior to combining.
摘要翻译：用于相干发送和接收光数据信号的方法和装置。一种用于相干光发射机的集成光学块（100），包括：分束器（102），被配置为将输入光信号分为第一和第二输入光信号，以输出第一输入光信号用于光发射机并输出用作本地振荡器信号的第二输入光信号; 被配置为组合第一和第二接收调制光信号以形成输出的偏振组合器（104）以及偏振旋转器（106），其被配置为旋转所述第二调制光信号的偏振，使得其在组合之前基本上与所述第一调制光信号的偏振正交。

74. 发明授权

US09520950B2 Optical communications system having chromatic dispersion and polarization mode dispersion compensation 有权
标题翻译：具有色散和偏振模色散补偿的光通信系统
公开(公告)号：US09520950B2
公开(公告)日：2016-12-13
申请号：US12330691
申请日：2008-12-09
申请人： James Harley , Kim Roberts , Chuandong Li
发明人： James Harley , Kim Roberts , Chuandong Li
IPC分类号： H04B10/00 , H04B10/532 , H04B10/2513 , H04B10/69
CPC分类号： H04B10/532 , H04B10/25137 , H04B10/6972 , H04B2210/252 , H04B2210/254
摘要： Described are an optical communications system and a method that allow for compensation of chromatic dispersion and polarization mode dispersion imparted to a communications signal propagating through an optical link. The system is based on a cost-effective optical transport architecture that accommodates baud rates exceeding 15 Gbaud and eliminates the need for costly optical dispersion compensators. Compensation for polarization mode dispersion is performed at the receiver using nonlinear processing. Advantageously, direct detection modulation using inexpensive electro-optic system components can be used in place of more costly and complex coherent and differential modulation formats. Digital filtering can be performed at the transmitter and the input signal can be inverted based on the nonlinearity of the transmitter electro-optic components. Consequently, the bandwidth and linearity requirements for the transmitter electro-optic components are relaxed, and cost reductions are realized.
摘要翻译：描述了允许补偿通过光链路传播的通信信号的色散和偏振模色散的光通信系统和方法。该系统基于具有成本效益的光学传输架构，其适应波特率超过15Gbaud，并且不需要昂贵的光学色散补偿器。使用非线性处理在接收机处执行偏振模色散的补偿。有利地，可以使用廉价的电光系统组件的直接检测调制来代替更昂贵和复杂的相干和差分调制格式。可以在发射机处执行数字滤波，并且可以基于发射机电光部件的非线性来反转输入信号。因此，放大了发射机电光元件的带宽和线性要求，并实现成本降低。

75. 发明授权

US09515742B2 System and methods for adaptive equalization for optical modulation formats 有权
标题翻译：用于光调制格式的自适应均衡的系统和方法
公开(公告)号：US09515742B2
公开(公告)日：2016-12-06
申请号：US14968005
申请日：2015-12-14
申请人： AT&T Intellectual Property I, LP
发明人： Xiang Zhou , Lynn Nelson
IPC分类号： H04B10/61 , H04J14/06 , H04B10/532 , H04L25/03
CPC分类号： H04B10/532 , H04B10/6166 , H04J14/06 , H04L25/03038 , H04L25/03057 , H04L2025/03401 , H04L2025/0342 , H04L2025/03687
摘要： A method for modifying the performance of an adaptive equalizer in a receiver is provided. A carrier wave comprising a first polarization state and a second polarization state, wherein there is a correlation between the first polarization state and the second polarization state, is received. The first polarization state and the second polarization state are demultiplexed to generate two respective constellations. A first expected value based on the first constellation, and a second expected value based on the second constellation, are calculated. An adaptive equalizer receives a first and second signals associated with the respective polarization states. The adaptive equalizer generates outputs based on the signals. These outputs are used to generate error values. Feedback is input into the adaptive equalizer, wherein the feedback is based on the error values.
摘要翻译：提供了一种用于在接收机中修改自适应均衡器的性能的方法。包括第一偏振状态和第二偏振状态的载波，其中存在第一偏振状态和第二偏振状态之间的相关性。第一偏振态和第二偏振状态被解复用以产生两个相应的星座。计算基于第一星座的第一预期值和基于第二星座的第二预期值。自适应均衡器接收与相应极化状态相关联的第一和第二信号。自适应均衡器根据信号产生输出。这些输出用于生成错误值。反馈被输入到自适应均衡器中，其中反馈基于误差值。

76. 发明申请

US20160337041A1 Polarization Independent Reflective Modulator 审中-公开
标题翻译：极化独立反射调制器
公开(公告)号：US20160337041A1
公开(公告)日：2016-11-17
申请号：US15136396
申请日：2016-04-22
申请人： Futurewei Technologies, Inc.
发明人： Yangjing Wen , Fei Zhu , Yu Sheng Bai
IPC分类号： H04B10/532 , H04J14/06 , H04J14/02 , H04Q11/00
CPC分类号： H04J14/06 , G02F1/21 , G02F2001/211 , G02F2203/06 , H04B10/2575 , H04B10/272 , H04B10/505 , H04J2014/0253
摘要： An apparatus comprising an optical input configured to receive an optical carrier, an polarization beam splitter configured to forward a first polarized component of the optical carrier along a first light path, and forward a second polarized component of the optical carrier along a second light path, wherein the first polarized component comprises a first polarization that is perpendicular to a second polarization of the second polarized component upon exiting the optical splitter, and an optical modulator coupled to the first light path and the second light path, the modulator configured to modulate the first polarized component of the optical carrier and the second polarized component of the optical carrier.
摘要翻译：一种包括被配置为接收光学载体的光学输入的设备，被配置为沿着第一光路向前移动所述光学载体的第一偏振分量的偏振分束器，以及沿着第二光路向前移动所述光学载体的第二偏振分量，其中所述第一偏振分量包括在离开所述分光器时垂直于所述第二偏振分量的第二偏振的第一偏振和耦合到所述第一光路和所述第二光路的光调制器，所述调制器被配置为调制所述第一偏振光载波的偏振分量和光载波的第二偏振分量。

77. 发明授权

US09490930B2 Optical communication system and method 有权
标题翻译：光通信系统及方法
公开(公告)号：US09490930B2
公开(公告)日：2016-11-08
申请号：US13990371
申请日：2011-11-28
申请人： Alessandro Bianciotto , Juraj Slovak , Dirk Van Den Borne , Dirk-Daniel Gross
发明人： Alessandro Bianciotto , Juraj Slovak , Dirk Van Den Borne , Dirk-Daniel Gross
IPC分类号： H04B10/00 , H04J14/06 , H04B10/2543 , H04B10/2569 , H04B10/291 , H04B10/532 , H04J14/02
CPC分类号： H04J14/06 , H04B10/2543 , H04B10/2569 , H04B10/2916 , H04B10/532 , H04J14/02
摘要： A method for an optical communication system and an optical communication system comprising a pump source configured to generate a pump signal having rotating polarization, a polarization sensitive receiver for receiving the optical signal having a polarization tracking cut-off frequency, wherein the polarization of the pump signal is configured to rotate at a predetermined frequency of polarization rotation and the frequency of polarization rotation of the pump signal is higher than the polarization tracking cut-off frequency of the receiver. Suitable for mitigation of cross-polarization modulation (XPolM) related effects in coherent polarization multiplexed quadrature phase shift keying (CP-QPSK) systems.
摘要翻译：一种用于光通信系统和光通信系统的方法，包括被配置为产生具有旋转极化的泵浦信号的泵浦源，用于接收具有偏振跟踪截止频率的光信号的偏振敏感接收器，其中泵的极化信号被配置为以预定的偏振旋转频率旋转，并且泵浦信号的偏振旋转频率高于接收器的偏振跟踪截止频率。适用于减轻相干偏振复用正交相移键控（CP-QPSK）系统中的交叉偏振调制（XPolM）相关效应。

78. 发明申请

US20160269123A1 OPTICAL TRANSMITTER, OPTICAL TRANSMISSION SYSTEM AND OPTICAL COMMUNICATION CONTROL METHOD 有权
标题翻译：光学发射机，光传输系统和光通信控制方法
公开(公告)号：US20160269123A1
公开(公告)日：2016-09-15
申请号：US15062816
申请日：2016-03-07
申请人： FUJITSU LIMITED
发明人： Yuichi AKIYAMA
IPC分类号： H04B10/556 , H04B10/516 , H04B10/532
CPC分类号： H04B10/5561 , H04B10/00 , H04B10/505 , H04B10/5055 , H04B10/50577 , H04B10/5161 , H04B10/532
摘要： An optical transmitter has an electrical signal generator configured to generate an electrical drive signal based upon input data; an optical modulator configured to modulate an input light by the electrical drive signal, the optical modulator having a first waveguide pair, a second waveguide pair, and a phase shifter that provides a phase difference between light waves travelling through the first waveguide pair and the second waveguide pair; and a controller configured to set the phase difference at the phase shifter to 0+n*π radians, where it is an integer, when a modulation scheme of the optical modulator is changed from a first scheme using four or more phase values to a second scheme using two phase values.
摘要翻译：光发射器具有电信号发生器，其被配置为基于输入数据产生电驱动信号; 配置为通过电驱动信号调制输入光的光调制器，所述光调制器具有第一波导对，第二波导对和移相器，所述第一波导对，第二波导对和移相器提供穿过第一波导对的光波与第二波导对之间的相位差波导对; 以及控制器，其被配置为当所述光调制器的调制方案从使用四个或更多个相位值的第一方案改变为第二方案时，将所述移相器处的相位差设置为0 + n *π弧度，其中它是整数方案使用两个相位值。

79. 发明申请

US20160204894A1 STOKES-VECTOR-BASED TRANSMISSION AND DETECTION OF OPTICAL POLARIZATION-DIVISION-MULTIPLEXED SIGNALS 有权
标题翻译：基于STOCES-VECTOR的传输和光学极化 - 多路复用信号的检测
公开(公告)号：US20160204894A1
公开(公告)日：2016-07-14
申请号：US14596912
申请日：2015-01-14
申请人： Alcatel-Lucent USA Inc.
发明人： Po Dong , Chongjin Xie , Young-Kai Chen
IPC分类号： H04J14/06 , H04B10/532
CPC分类号： H04J14/06 , H04B10/5053 , H04B10/541 , H04B10/5561 , H04B10/671 , H04B10/69
摘要： We disclose an optical transport system configured to transport data using a PDM-modulation format, in which each of two orthogonal polarizations is independently amplitude-modulated, and the relative phase between the carrier waves of the two polarizations may also be modulated. This modulation format enables the optical receiver to perform direct optical detection using a Stokes-vector detector to fully recover the encoded data. In an example embodiment, the corresponding signal processing at the optical receiver may include: determining a Stokes-space rotation matrix corresponding to the polarization-state rotation encountered by the PDM signal in the optical transport link; applying the determined Stokes-space rotation matrix to the Stokes sub-vector measured by the Stokes-vector detector to estimate the Stokes sub-vector of the PDM signal at the originating optical transmitter; converting the estimated Stokes sub-vector into the corresponding Jones vector; and recovering the data by decoding the polarization components of the Jones vector.
摘要翻译：我们公开了配置为使用PDM调制格式传输数据的光传输系统，其中两个正交偏振中的每一个独立地被调幅，并且两个极化的载波之间的相对相位也可以被调制。这种调制格式使得光接收机能够使用斯托克斯矢量检测器执行直接光学检测，以完全恢复编码数据。在示例实施例中，光接收机处的相应信号处理可以包括：确定与光传送链路中的PDM信号遇到的偏振状态旋转相对应的斯托克斯空间旋转矩阵; 将确定的斯托克斯空间旋转矩阵应用于由斯托克斯矢量检测器测量的斯托克斯子向量，以估计始发光发射机处的PDM信号的斯托克斯子向量; 将估计的斯托克斯子向量转换成对应的琼斯矢量; 以及通过解码Jones矢量的极化分量来恢复数据。

80. 发明授权

US09385815B2 Bandwidth efficient dual carrier 有权
公开(公告)号：US09385815B2
公开(公告)日：2016-07-05
申请号：US14617782
申请日：2015-02-09
申请人： FINISAR CORPORATION
发明人： Ilya Lyubomirsky , Yasuhiro Matsui , Daniel Mahgerefteh
IPC分类号： H04B10/04 , H04B10/00 , H04B10/06 , H04B10/532 , H04J14/06
CPC分类号： H04B10/532 , H04J14/06
摘要： 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.

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