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    Compensation of optical transmission impairments using digital backward propagation
    3.
    发明授权
    Compensation of optical transmission impairments using digital backward propagation 有权
    使用数字反向传播补偿光传输损伤

    公开(公告)号：US08447191B2

    公开(公告)日：2013-05-21

    申请号：US12728854

    申请日：2010-03-22

    申请人： Guifang Li ,  Eduardo Mateo ,  Fatih Yaman

    发明人： Guifang Li ,  Eduardo Mateo ,  Fatih Yaman

    IPC分类号： H04B10/06

    CPC分类号： H04B10/2507 ,  H04J14/002

    摘要： Systems and method of compensating for transmission impairment are disclosed. One such method comprises receiving a wavelength-division multiplexed optical signal. The received optical signal has been distorted in the physical domain by an optical transmission channel. The method further comprises propagating the distorted optical signal backward in the electronic domain in a corresponding virtual optical transmission channel. The backward propagation fully compensates for fiber dispersion, self-phase modulation, and cross-phase modulation (XPM) and partially compensates for four-wave mixing (FWM).

    摘要翻译： 公开了补偿传动损伤的系统和方法。 一种这样的方法包括接收波分复用光信号。 所接收的光信号在物理域中已被光传输通道失真。 该方法还包括在对应的虚拟光传输信道中的电子域中向后传播失真的光信号。 反向传播完全补偿光纤色散，自相位调制和交叉相位调制（XPM），并部分补偿四波混频（FWM）。

    SOFT-DECISION NON-BINARY LDPC CODING FOR ULTRA-LONG-HAUL OPTICAL TRANSOCEANIC TRANSMISSIONS
    4.
    发明申请
    SOFT-DECISION NON-BINARY LDPC CODING FOR ULTRA-LONG-HAUL OPTICAL TRANSOCEANIC TRANSMISSIONS 审中-公开
    用于超长距离光电传输的软决策非二进制LDPC编码

    公开(公告)号：US20120216093A1

    公开(公告)日：2012-08-23

    申请号：US13402462

    申请日：2012-02-22

    申请人： Ivan B. Djordjevic ,  Shaoliang Zhang ,  Lei Xu ,  Fatih Yaman ,  Ting Wang

    发明人： Ivan B. Djordjevic ,  Shaoliang Zhang ,  Lei Xu ,  Fatih Yaman ,  Ting Wang

    IPC分类号： H03M13/29 ,  G06F11/10

    CPC分类号： H03M13/1171 ,  H03M13/253 ,  H03M13/6561 ,  H04L1/0045 ,  H04L1/0055 ,  H04L1/0057 ,  H04L1/0071

    摘要： Methods and systems for soft-decision non-binary low-density parity-check (LDPC) coding for ultra-long-haul optical transoceanic transmissions are provided. A receiver includes one or more maximum a posteriori (MAP) equalizers configured to decode one or more symbols of an encoded input stream to provide one or more symbol log-likelihood ratios (LLRs). One or more LLR estimators are configured to estimate the log-likelihood ratios of the one or more symbol LLRs to provide one or more bit LLRs. One or more non-binary LDPC decoders are configured to decode the input stream using the one or more bit LLRs to recover an original input stream.

    摘要翻译： 提供了用于超长距离光学跨洋传输的软判决非二进制低密度奇偶校验（LDPC）编码的方法和系统。 接收机包括一个或多个最大后验（MAP）均衡器，其被配置为解码编码输入流的一个或多个符号以提供一个或多个符号对数似然比（LLR）。 一个或多个LLR估计器被配置为估计一个或多个符号LLR的对数似然比以提供一个或多个比特LLR。 一个或多个非二进制LDPC解码器被配置为使用一个或多个比特LLR解码输入流，以恢复原始输入流。

    Polarization-alternating optical signal generation using CSRZ modulation
    6.
    发明授权
    Polarization-alternating optical signal generation using CSRZ modulation 有权
    使用CSRZ调制的极化交替光信号生成

    公开(公告)号：US08787709B2

    公开(公告)日：2014-07-22

    申请号：US13435775

    申请日：2012-03-30

    申请人： Fatih Yaman ,  Shaoliang Zhang ,  Lei Xu ,  Ting Wang ,  Yoshihisa Inada ,  Takaaki Ogata ,  Yasuhiro Aoki

    发明人： Fatih Yaman ,  Shaoliang Zhang ,  Lei Xu ,  Ting Wang ,  Yoshihisa Inada ,  Takaaki Ogata ,  Yasuhiro Aoki

    IPC分类号： G02F1/035 ,  G02F1/01

    CPC分类号： G02F1/01 ,  H04B10/5162 ,  H04B10/5165 ,  H04B10/532

    摘要： A method for optical chirp-free optical polarization modulation includes dividing a data modulated optical signal into a first optical path and a second optical path, using a Mach-Zehnder intensity modulator in the first optical path for imparting a π phase difference between adjacent symbols of the data modulated optical signal in the first optical path, adjusting a delay and amplitude of symbols of the data modulated optical signal in the second path so that the symbols in the first path and the symbols in the second path are synchronized and have substantially equal power levels, and combining the first and second optical paths so that symbols from the first and second optical paths are in orthogonal polarizations.

    摘要翻译： 一种用于无啁啾光学偏振调制的方法包括：使用第一光路中的马赫 - 曾德尔强度调制器将数据调制光信号划分成第一光路和第二光路， 在第一光路中的数据调制光信号的相邻符号之间的相位差，调整第二路径中的数据调制光信号的符号的延迟和幅度，使得第一路径中的符号和第二路径中的符号为 同步并且具有基本上相等的功率电平，并且组合第一和第二光路，使得来自第一和第二光路的符号处于正交偏振。

    Polarization Demultiplexing Using Independent Component Analysis
    8.
    发明申请
    Polarization Demultiplexing Using Independent Component Analysis 有权
    使用独立分量分析的极化解复用

    公开(公告)号：US20110255858A1

    公开(公告)日：2011-10-20

    申请号：US13071499

    申请日：2011-03-24

    申请人： Xiaobo Xie ,  Guifang Li ,  Fatih Yaman

    发明人： Xiaobo Xie ,  Guifang Li ,  Fatih Yaman

    IPC分类号： H04J14/00

    CPC分类号： H04J14/06

    摘要： Systems and methods of polarizaton demultiplexing are disclosed. One such method receives a transmitted polarization-multiplexed optical signal The polarization-multiplexed has multiple polarizations, each of which represents an independent data stream. The method converts the polarization-multiplexed optical signal to a corresponding polarization-multiplexed electrical signal. The method determines an inverse transformation matrix that meets an independent component analysis (ICA) criterion. The method applies the inverse transformation matrix to the polarization-multiplexed electrical signal, which produces a polarization-demultiplexed electrical signal. The method phase estimates the polarization-demultiplexed electrical signal to recover the data stream.

    摘要翻译： 公开了极化解复用的系统和方法。 一种这样的方法接收发送的偏振复用光信号。偏振复用具有多个极化，每个偏振表示独立的数据流。 该方法将偏振复用光信号转换为对应的偏振复用电信号。 该方法确定满足独立分量分析（ICA）标准的逆变换矩阵。 该方法将逆变换矩阵应用于偏振复用电信号，产生偏振解复用的电信号。 方法阶段估计偏振解复用的电信号以恢复数据流。

    Silicon photonic fiber and method of manufacture
    9.
    发明授权
    Silicon photonic fiber and method of manufacture 有权
    硅光子纤维及其制造方法

    公开(公告)号：US08813522B2

    公开(公告)日：2014-08-26

    申请号：US12578958

    申请日：2009-10-14

    申请人： Guifang Li ,  Fatih Yaman

    发明人： Guifang Li ,  Fatih Yaman

    IPC分类号： G02B6/02

    CPC分类号： C01B33/023 ,  G02B6/02328 ,  G02B6/02361 ,  G02B6/102 ,  G02B2006/12061 ,  G02B2006/12169

    摘要： Methods of converting silica to silicon and fabricating silicon photonic crystal fiber (PCF) are disclosed. Silicon photonic crystal fibers made by the fabrication methods are also disclosed. One fabrication method includes: sealing silica PCF and a quantity of magnesium within a container, the quantity of magnesium defined by 2Mg(g)+SiO2(s)→2MgO(s)+Si(s); converting silica PCF to a reacted PCF through magnesiothermic reduction; and converting the reacted PCF to the fabricated silicon PCF by selective dissolution of the reacted PCF in an acid. Another fabrication method includes: adding silica PCF and a quantity of solid magnesium to an unsealed container, the quantity of magnesium substantially in excess of that defined by 2Mg(g)+SiO2(s)→2MgO(s)+Si(s); converting silica PCF to a reacted PCF through magnesiothermic reduction; and converting the reacted PCF to the fabricated silicon PCF by selective dissolution of the reacted PCF in an acid.

    摘要翻译： 公开了将二氧化硅转化为硅并制造硅光子晶体光纤（PCF）的方法。 还公开了通过制造方法制造的硅光子晶体光纤。 一种制造方法包括：将二氧化硅PCF和一定量的镁密封在容器内，由2Mg（g）+ SiO 2（s）→2MgO（s）+ Si（s）限定的镁的量; 通过氧化镁还原将二氧化硅PCF转化为反应的PCF; 并通过将反应的PCF选择性溶解在酸中将反应的PCF转化成制造的硅PCF。 另一种制造方法包括：将二氧化硅PCF和一定量的固体镁添加到未密封的容器中，镁的量基本上超过由2Mg（g）+ SiO 2（s）→2MgO（s）+ Si（s）限定的镁; 通过氧化镁还原将二氧化硅PCF转化为反应的PCF; 并通过将反应的PCF选择性溶解在酸中将反应的PCF转化成制造的硅PCF。

    Polarization demultiplexing using independent component analysis
    10.
    发明授权
    Polarization demultiplexing using independent component analysis 有权
    使用独立分量分析的极化解复用

    公开(公告)号：US08699889B2

    公开(公告)日：2014-04-15

    申请号：US13071499

    申请日：2011-03-24

    申请人： Xiaobo Xie ,  Guifang Li ,  Fatih Yaman

    发明人： Xiaobo Xie ,  Guifang Li ,  Fatih Yaman

    IPC分类号： H04B10/06 ,  H04J14/04

    CPC分类号： H04J14/06

    摘要： Systems and methods of polarization demultiplexing are disclosed. One such method receives a transmitted polarization-multiplexed optical signal The polarization-multiplexed has multiple polarizations, each of which represents an independent data stream. The method converts the polarization-multiplexed optical signal to a corresponding polarization-multiplexed electrical signal. The method determines an inverse transformation matrix that meets an independent component analysis (ICA) criterion. The method applies the inverse transformation matrix to the polarization-multiplexed electrical signal, which produces a polarization-demultiplexed electrical signal. The method phase estimates the polarization-demultiplexed electrical signal to recover the data stream.

    摘要翻译： 公开了偏振解复用的系统和方法。 一种这样的方法接收发送的偏振复用光信号。偏振复用具有多个极化，每个偏振表示独立的数据流。 该方法将偏振复用光信号转换为对应的偏振复用电信号。 该方法确定满足独立分量分析（ICA）标准的逆变换矩阵。 该方法将逆变换矩阵应用于偏振复用电信号，产生偏振解复用的电信号。 方法阶段估计偏振解复用的电信号以恢复数据流。