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公开(公告)号：US07308169B2
公开(公告)日：2007-12-11
申请号：US10922690
申请日：2004-08-19
申请人： Sethumadhavan Chandrasekhar , Andrew R. Chraplyvy , Christopher Richard Doerr , Peter J. Winzer
发明人： Sethumadhavan Chandrasekhar , Andrew R. Chraplyvy , Christopher Richard Doerr , Peter J. Winzer
IPC分类号： G02B6/26
CPC分类号： H04B10/2507 , G02B6/266 , H04J14/0221
摘要： A multi-channel optical equalizer for intersymbol interference mitigation compensates for single- or multi-wavelength channels simultaneously and requires few adjustable parameters. The optical equalizer also compensates for overshoots and signal transition degradations in semiconductor optical amplifiers. The equalizer unit uses one control signal for magnitude and one to control signal phase. The equalizer includes a controllable coupling ratio coupler for splitting the light into two portions and a controllable interferometer having two arms, one arm having an additional delay which is equal to an integer multiple of 1/Δf, where Δf is the channel spacing between adjacent wavelengths utilized in the optical system. The controllable interferometer has a controllable delay in a first or second arm for adjusting the relative phase of the light passing therethrough. A coupler combines the two signal portions from the first and second arms to form the equalized output signal. A multistage optical equalizer is implemented using a plurality of optical signal equalizers.
摘要翻译： 用于符号间干扰减轻的多通道光学均衡器同时补偿单波长或多波长通道，并且需要很少的可调参数。 光学均衡器还补偿半导体光放大器中的过冲和信号转换劣化。 均衡器单元使用一个控制信号的幅度和一个来控制信号相位。 均衡器包括可控耦合比耦合器，用于将光分成两部分，以及具有两个臂的可控干涉仪，一个臂具有等于1 / Deltaf的整数倍的附加延迟，其中Deltaf是相邻波长之间的信道间隔 用于光学系统。 可控干涉仪在第一或第二臂中具有可控制的延迟，用于调节通过其中的光的相对相位。 耦合器组合来自第一和第二臂的两个信号部分以形成均衡的输出信号。 使用多个光信号均衡器来实现多级光学均衡器。
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2.发明授权公开(公告)号：US06804434B1
公开(公告)日：2004-10-12
申请号：US10735176
申请日：2003-12-12
申请人： Sethumadhavan Chandrasekhar , Andrew Roman Chraplyvy , Christopher Richard Doerr , Peter J. Winzer
发明人： Sethumadhavan Chandrasekhar , Andrew Roman Chraplyvy , Christopher Richard Doerr , Peter J. Winzer
IPC分类号： G02B626
CPC分类号： H04B10/1149 , G02B6/266 , H04B10/2507 , H04J14/0221
摘要： A multi-channel optical equalizer for intersymbol interference mitigation compensates for single- or multi- wavelength channels simultaneously and requires few adjustable parameters. The optical equalizer compensates for overshoots and signal transition degradations in semiconductor optical amplifiers. The equalizer unit uses one control signal for magnitude and one to control signal phase. The equalizer includes a controllable coupling ratio coupler for splitting the light into two portions and a controllable interferometer having two arms, one arm having an additional delay which is equal to an integer multiple of 1/&Dgr;f, where &Dgr;f is the channel spacing between adjacent wavelengths utilized in the optical system. The controllable interferometer has a controllable delay in a first or second arm for adjusting the relative phase of the light passing therethrough. A coupler combines the two signal portions from the first and second arms to form the equalized output signal.
摘要翻译： 用于符号间干扰减轻的多通道光学均衡器同时补偿单波长或多波长通道，并且需要很少的可调参数。 光学均衡器补偿半导体光放大器中的过冲和信号转换劣化。 均衡器单元使用一个控制信号的幅度和一个来控制信号相位。 均衡器包括可控耦合比耦合器，用于将光分成两部分，以及具有两个臂的可控干涉仪，一个臂具有等于1 / Deltaf的整数倍的附加延迟，其中Deltaf是相邻波长之间的信道间隔 用于光学系统。 可控干涉仪在第一或第二臂中具有可控制的延迟，用于调节通过其中的光的相对相位。 耦合器组合来自第一和第二臂的两个信号部分以形成均衡的输出信号。
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3.发明授权公开(公告)号：US06785446B1
公开(公告)日：2004-08-31
申请号：US10393483
申请日：2003-03-20
申请人： Sethumadhavan Chandrasekhar , Andrew Roman Chraplyvy , Christopher Richard Doerr , Peter J. Winzer
发明人： Sethumadhavan Chandrasekhar , Andrew Roman Chraplyvy , Christopher Richard Doerr , Peter J. Winzer
IPC分类号： G02B626
CPC分类号： H04B10/1149 , G02B6/266 , H04B10/2507 , H04J14/0221
摘要： An improved multi-channel optical equalizer method and apparatus for intersymbol interference mitigation compensates many wavelength channels simultaneously and requires few adjustable parameters. The equalizer unit has only two control signals, one to control signal magnitude and one to control signal phase, yet it can still compensate many wavelength channels simultaneously. The equalizer includes a coupler with a controllable coupling ratio for splitting the light into two portions and a controllable interferometer means having two arms, one arm having an additional delay which is equal to an integer multiple of 1/&Dgr;f, where &Dgr;f is the channel spacing of the multiwavelength system. The controllable interferometer unit also has a controllable delay in a first or second arm for adjusting the relative phase of the light passing therethrough. A coupler combines the two signal portions from the first and second arms to form the equalized output signal.
摘要翻译： 用于符号间干扰减轻的改进的多通道光均衡器方法和装置同时补偿许多波长信道，并且需要很少的可调参数。 均衡器单元只有两个控制信号，一个用于控制信号幅度，一个控制信号相位，但它仍然可以同时补偿许多波长信道。 均衡器包括具有可控耦合比的耦合器，用于将光分成两部分，以及具有两个臂的可控干涉仪装置，一个臂具有等于1 / Deltaf的整数倍的附加延迟，其中Deltaf是沟道间隔 的多波长系统。 可控干涉仪单元还具有用于调节通过其中的光的相对相位的第一或第二臂中的可控延迟。 耦合器组合来自第一和第二臂的两个信号部分以形成均衡的输出信号。
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公开(公告)号：US07477852B2
公开(公告)日：2009-01-13
申请号：US11047011
申请日：2005-01-31
IPC分类号： H04B10/00
CPC分类号： H04B10/677 , H04B10/674 , H04B10/69
摘要： A method and apparatus for receiving narrowband filtered optical PSK signals, including converting PSK optical signals into intensity-modulated signals at a receiver, and introducing a desired amplitude imbalance between the first and the second intensity-modulated signals to improve receiver performance.
摘要翻译： 一种用于接收窄带滤波的光PSK信号的方法和装置，包括将PSK光信号转换成在接收机处的强度调制信号，并且在第一和第二强度调制信号之间引入期望的幅度不平衡以提高接收机性能。
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公开(公告)号：US20130136449A1
公开(公告)日：2013-05-30
申请号：US13731738
申请日：2012-12-31
申请人： Xiang Liu , Peter J. Winzer , Andrew R. Chraplyvy , Robert W. Tkach , Chandrasekhar Sethumadhavan
发明人： Xiang Liu , Peter J. Winzer , Andrew R. Chraplyvy , Robert W. Tkach , Chandrasekhar Sethumadhavan
IPC分类号： H04B10/2507
CPC分类号： H04B10/2507 , H04B10/25137 , H04B10/5053 , H04B10/516
摘要： An example apparatus comprises an optical transmitter which includes a first processor and at least two optical modulators. The first processor is configured to generate a first electronic representation for each of at least two optical signals for carrying payload data modulated according to a one-dimensional (1-D) modulation format, and to induce on respective ones of the first electronic representations an amount of dispersion that depends on a power-weighted accumulated dispersion (ADPW) of a transmission link through which the at least two optical signals are to be transmitted thereby generating complex-valued electronic representations of pre-dispersion-compensated optical signals. Each of the at least two optical modulators modulate a respective analog version corresponding to a respective one of the complex-valued electronic representations onto a polarization of an optical carrier.
摘要翻译： 示例性装置包括光发射机，其包括第一处理器和至少两个光调制器。 第一处理器被配置为为至少两个光信号中的每一个生成用于承载根据一维（1-D）调制格式调制的有效载荷数据的第一电子表示，并且在第一电子表示中的相应的一个 取决于要发送至少两个光信号的传输链路的功率加权累积色散（ADPW）的色散量，从而生成预色散补偿光信号的复值电子表示。 所述至少两个光调制器中的每一个将对应于复值电子表示的相应模拟版本调制到光载波的极化。
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6.发明申请公开(公告)号：US20120294607A1
公开(公告)日：2012-11-22
申请号：US13112147
申请日：2011-05-20
CPC分类号： H01S3/094061 , G02B6/02042 , G02B6/02095 , H01S3/06754 , H01S3/094096 , H01S3/2383 , H01S3/302 , H04B10/2912 , H04J14/02 , H04J14/04
摘要： A spatially multiplexed optical link having a plurality of transmission paths, wherein at least one transmission path is configured to carry an optical-pump signal while one or more other transmission paths carry data-bearing signals. Disposed within the optical link are an optical signal-distribution module and an amplifier module. The optical signal-distribution module is configured to couple portions of the optical-pump signal into the data-bearing transmission paths. The amplifier module is configured to amplify the data-bearing signals using these portions of the optical-pump signal as a power source in a suitable all-optical amplification scheme. The optical-pump signal can optionally be tapped and applied to a photovoltaic element configured to directly power a device, e.g., an optical performance monitor, or to charge the battery of that device to enable its autonomous operation if external electrical power is not available where the device is deployed.
摘要翻译： 一种具有多个传输路径的空间复用光链路，其中至少一个传输路径被配置为在一个或多个其它传输路径承载数据承载信号的同时承载光泵信号。 设置在光链路内的是光信号分配模块和放大器模块。 光信号分配模块被配置为将光泵信号的部分耦合到数据承载传输路径中。 放大器模块被配置为以合适的全光放大方案将光泵信号的这些部分放大为数据承载信号作为电源。 光泵信号可以可选地被抽头并且被施加到被配置为直接为设备（例如光学性能监视器）供电的光伏元件，或者对于该设备的电池进行充电，以使得其能够自主操作，如果外部电力不可用， 该设备已部署。
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7.发明授权公开(公告)号：US09438004B2
公开(公告)日：2016-09-06
申请号：US13112147
申请日：2011-05-20
IPC分类号： G02B6/26 , G02B6/34 , G02B6/42 , H01S3/094 , H04B10/291 , H04J14/04 , H01S3/067 , H01S3/23 , H01S3/30 , G02B6/02 , H04J14/02
CPC分类号： H01S3/094061 , G02B6/02042 , G02B6/02095 , H01S3/06754 , H01S3/094096 , H01S3/2383 , H01S3/302 , H04B10/2912 , H04J14/02 , H04J14/04
摘要： A spatially multiplexed optical link having a plurality of transmission paths, wherein at least one transmission path is configured to carry an optical-pump signal while one or more other transmission paths carry data-bearing signals. Disposed within the optical link are an optical signal-distribution module and an amplifier module. The optical signal-distribution module is configured to couple portions of the optical-pump signal into the data-bearing transmission paths. The amplifier module is configured to amplify the data-bearing signals using these portions of the optical-pump signal as a power source in a suitable all-optical amplification scheme. The optical-pump signal can optionally be tapped and applied to a photovoltaic element configured to directly power a device, e.g., an optical performance monitor, or to charge the battery of that device to enable its autonomous operation if external electrical power is not available where the device is deployed.
摘要翻译： 一种具有多个传输路径的空间复用光链路，其中至少一个传输路径被配置为在一个或多个其它传输路径承载数据承载信号的同时承载光泵信号。 设置在光链路内的是光信号分配模块和放大器模块。 光信号分配模块被配置为将光泵信号的部分耦合到数据承载传输路径中。 放大器模块被配置为以合适的全光放大方案将光泵信号的这些部分放大为数据承载信号作为电源。 光泵信号可以可选地被抽头并且被施加到被配置为直接为设备（例如光学性能监视器）供电的光伏元件，或者对于该设备的电池进行充电，以使得其能够自主操作，如果外部电力不可用， 该设备已部署。
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公开(公告)号：US20120251126A1
公开(公告)日：2012-10-04
申请号：US13077149
申请日：2011-03-31
CPC分类号： G02B6/03611 , G02B6/0283 , G02B6/0285 , G02B6/0288
摘要： An embodiment of an apparatus includes an optical fiber for which a complete orthogonal basis of propagating modes at an optical telecommunication frequency includes ones of the propagating modes with different angular momenta. The optical fiber has a tubular optical core and an outer optical cladding in contact with and surrounding the tubular optical core. The tubular optical core has a larger refractive index than the optical cladding. The tubular optical core is configured such that those of the propagating modes whose angular momenta have the lowest magnitude for the propagating modes have substantially the same radial intensity profile.
摘要翻译： 一种装置的实施例包括一种光纤，其中在光通信频率处的传播模式的完全正交基础包括具有不同角动量的传播模式中的一种。 光纤具有与管状光学核心接触并围绕管状光学核心的管状光学核心和外部光学包层。 管状光纤芯具有比光学包层更大的折射率。 管状光纤芯被配置为使得对于传播模式的角动量具有最低幅度的传播模式的那些基本上具有相同的径向强度分布。
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公开(公告)号：US08509581B2
公开(公告)日：2013-08-13
申请号：US13077149
申请日：2011-03-31
CPC分类号： G02B6/03611 , G02B6/0283 , G02B6/0285 , G02B6/0288
摘要： An embodiment of an apparatus includes an optical fiber for which a complete orthogonal basis of propagating modes at an optical telecommunication frequency includes ones of the propagating modes with different angular momenta. The optical fiber has a tubular optical core and an outer optical cladding in contact with and surrounding the tubular optical core. The tubular optical core has a larger refractive index than the optical cladding. The tubular optical core is configured such that those of the propagating modes whose angular momenta have the lowest magnitude for the propagating modes have substantially the same radial intensity profile.
摘要翻译： 一种装置的实施例包括一种光纤，其中在光通信频率处的传播模式的完全正交基础包括具有不同角动量的传播模式中的一种。 光纤具有与管状光学核心接触并围绕管状光学核心的管状光学核心和外部光学包层。 管状光纤芯具有比光学包层更大的折射率。 管状光纤芯被配置为使得对于传播模式的角动量具有最低幅度的传播模式的那些基本上具有相同的径向强度分布。
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公开(公告)号：US20090169148A1
公开(公告)日：2009-07-02
申请号：US12006194
申请日：2007-12-31
IPC分类号： G02F1/035
CPC分类号： G02F1/2257 , G02F2001/0155 , G02F2001/212 , G02F2202/108 , H04B10/5053
摘要： An exemplary optical modulator includes an interferometer. The interferometer includes an input optical coupler, an output optical coupler, and two or more controllable optical waveguides. Each controllable optical waveguide connects the input optical coupler to the output optical coupler and has an electro-absorption modulator along a segment thereof. Two of the controllable optical waveguides are connected to transmit to an output of the output optical coupler light of substantially different maximum amplitude.
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