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公开(公告)号：US07613402B2
公开(公告)日：2009-11-03
申请号：US10730413
申请日：2003-12-08
IPC分类号： H04B10/06
CPC分类号： H04L25/068 , H04B10/69 , H04L7/042 , H04L25/4923
摘要： An optical receiver adapted to process an optical duobinary signal received over a transmission link in an optical communication system. In one embodiment, the receiver has an optical-to-electrical signal converter coupled to a decoder. The decoder processes an electrical signal generated by the converter to generate a bit sequence corresponding to the optical signal. To generate a bit value, the decoder integrates the electrical signal using a sampling window and compares the integration result with a decision threshold value. In one configuration, the width of the sampling window and the decision threshold value are selected based on the eye diagram and noise distribution function, respectively, corresponding to the optical signal. Advantageously, embodiments of the present invention improve overall back-to-back (i.e., source-to-destination) system performance, e.g., by improving dispersion tolerance and/or reducing optical power corresponding to a selected bit error rate value.
摘要翻译： 一种适于处理在光通信系统中通过传输链路接收的光双二进制信号的光接收机。 在一个实施例中，接收机具有耦合到解码器的光电信号转换器。 解码器处理由转换器产生的电信号以产生对应于光信号的比特序列。 为了产生位值，解码器使用采样窗口对电信号进行积分，并将积分结果与判定阈值进行比较。 在一种配置中，分别基于对应于光信号的眼图和噪声分布函数来选择采样窗口的宽度和判定阈值。 有利地，本发明的实施例例如通过改善对应于所选位错误率值的色散容限和/或减少光功率来改进整体背靠背（即源到目的地）系统性能。
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公开(公告)号：US20080075134A1
公开(公告)日：2008-03-27
申请号：US11525787
申请日：2006-09-22
IPC分类号： H01S3/00
CPC分类号： G01N21/3581
摘要： Pulses of signals in the terahertz region are generated using an apparatus made up of a mode-locked semiconductor laser diode with a short duty cycle that is optically coupled to a biased Auston switch. The output from the mode-locked semiconductor laser diode may first be supplied to a pulse compressor, and the resulting compressed pulses supplied to the Auston switch. Preferably, the mode-locking of the semiconductor laser diode is controllable, i.e., it is an active mode-locking semiconductor laser, so that the phase of the output optical signal from the laser is locked to the phase of an input control signal.
摘要翻译： 使用由与偏置的Auston开关光学耦合的具有短占空比的锁模半导体激光二极管构成的装置来产生太赫兹区域中的信号脉冲。 模式锁定半导体激光二极管的输出可以首先被提供给脉冲压缩器，并将所产生的压缩脉冲提供给奥斯顿开关。 优选地，半导体激光二极管的锁模可控，即它是主动锁模半导体激光器，使得来自激光器的输出光信号的相位被锁定到输入控制信号的相位。
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3.发明授权Method and apparatus for controlling the optical power of an optical transmission signal 失效用于控制光传输信号的光功率的方法和装置公开(公告)号：US06580539B1
公开(公告)日：2003-06-17
申请号：US09415350
申请日：1999-10-08
IPC分类号： H04J1402
CPC分类号： H04J14/0221 , H04B10/564
摘要： The present invention generally relates to the field of optical transmission and particularly to a method and an apparatus for controlling the optical power of an optical transmission signal in a wavelength division multiplex optical transmission system (WDM system). The optical power of a control channel is controlled to keep the total optical power of the optical transmission signal constant. The present invention avoids the deleterious effects of stimulated Brillouin Scattering by spreading the power density spectrum of the optical control signal.
摘要翻译： 本发明一般涉及光传输领域，特别涉及用于在波分复用光传输系统（WDM系统）中控制光传输信号的光功率的方法和装置。 控制通道的光功率被控制以保持光传输信号的总光功率恒定。 本发明通过扩展光控制信号的功率密度谱来避免受激布里渊散射的有害影响。
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4.发明授权公开(公告)号：US07805083B2
公开(公告)日：2010-09-28
申请号：US10942342
申请日：2004-09-16
IPC分类号： H04B10/00
CPC分类号： H04B10/2507
摘要： Method and apparatus for data recovery in optical transmission systems include parallel detection subcircuits for determining output values of sequentially provided optical data bits such that sequentially provided optical data bits are alternately processed by respective ones of the parallel detection subcircuits. For example, in one embodiment of the present invention, clock values to be used for timing provided to the first parallel detection subcircuit are 180° out of phase with clock values provided to the second parallel detection subcircuit, such that the first parallel detection subcircuit and the second parallel detection subcircuit alternately process input optical data bits according to odd valued clock signals and even valued clock signals. Furthermore, the outputs of the parallel detection subcircuits are connected crosswise to provide control signals for their parallel counterparts. In principle, various decisions are made using decision circuits and desired output values are selected based on the previously decided bits.
摘要翻译： 用于光传输系统中的数据恢复的方法和装置包括用于确定顺序提供的光数据位的输出值的并行检测子电路，使得顺序提供的光数据位被相应的并行检测子电路交替处理。 例如，在本发明的一个实施例中，用于提供给第一并行检测子电路的定时的时钟值与提供给第二并行检测子电路的时钟值相差180°，使得第一并行检测子电路和 第二并行检测分支电路根据奇数值时钟信号和偶数值时钟信号交替地处理输入光数据位。 此外，并行检测子电路的输出是交叉连接的，以提供它们的并行检测子系统的控制信号。 原则上，使用决策电路进行各种决定，并且基于先前确定的位选择期望的输出值。
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公开(公告)号：US07609976B2
公开(公告)日：2009-10-27
申请号：US11239656
申请日：2005-09-29
IPC分类号： H04B10/04
CPC分类号： H04B10/5165 , H04B10/505 , H04B10/5162 , H04B10/5167 , H04L7/0075 , H04L7/027
摘要： A method and system for ultra-high bit rate fiber-optic communications (e.g., 160 Gb/s) utilize a phase-correlated modulation format where phases of bits in adjacent four-bit groups in transmitted optical pulse trains are altered by π (or 180°).
摘要翻译： 用于超高比特率光纤通信（例如，160Gb / s）的方法和系统利用相位相关调制格式，其中传输的光脉冲串中的相邻四比特组中的比特的相位被pi（或 180°）。
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6.发明授权Multicasting optical switch fabric and method of detection based on novel heterodyne receiver 失效基于新颖外差接收机的组播光交换机结构及检测方法公开(公告)号：US07373091B2
公开(公告)日：2008-05-13
申请号：US10671131
申请日：2003-09-25
IPC分类号： H04B10/06
摘要： The inventors propose herein a switch fabric architecture that allows broadcasting and fast channel access in the ns-range. In various embodiments of the present invention, 10 Gb/s receiver modules are based on a novel heterodyne receiver and detection technique, which is tolerant to moderate wavelength drifts of a local oscillator. A gain clipped electrical amplifier is used in the novel receiver as a rectifier for bandpass signal recovery.
摘要翻译： 发明人在此提出了允许在ns范围内进行广播和快速信道接入的交换结构架构。 在本发明的各种实施例中，10Gb / s接收机模块基于新颖的外差接收机和检测技术，其能够适应本地振荡器的中等波长漂移。 增益钳位电放大器在新型接收机中用作带通信号恢复的整流器。
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公开(公告)号：US06327401B1
公开(公告)日：2001-12-04
申请号：US09501901
申请日：2000-02-10
申请人： Christopher Richard Doerr , Charles H Joyner , Lothar Benedict Erhard Josef Moeller , Martin Zirngibl
发明人： Christopher Richard Doerr , Charles H Joyner , Lothar Benedict Erhard Josef Moeller , Martin Zirngibl
IPC分类号： G02B628
CPC分类号： H01S5/4025 , H01S5/026 , H01S5/0268 , H01S5/4062 , H01S5/50
摘要： A multifrequency laser that uses a waveguide grating router as the filter for frequency control and encloses it within a structure that forms at each selected frequency two paths of slightly different lengths to create a DiDomenico-type of laser that uses a pair of coupled cavities for frequency control. In one embodiment two sets, each of N optical amplifications, are used to create two resonant paths at each frequency. In other embodiments, a portion of the output power is made to travel a second path to provide the second optical path.
摘要翻译： 一种多频激光器，其使用波导光栅路由器作为用于频率控制的滤波器，并将其包围在每个选定频率处形成两个稍微不同长度的路径的结构中，以创建使用一对耦合空腔的DiDomenico型激光器 控制。 在一个实施例中，使用N组光放大器中的两组，以在每个频率处产生两个谐振路径。 在其他实施例中，使输出功率的一部分行进第二路径以提供第二光路。
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公开(公告)号：US07643761B2
公开(公告)日：2010-01-05
申请号：US10782231
申请日：2004-02-19
IPC分类号： H04B10/06
CPC分类号： H04B10/695 , H04L25/497
摘要： An optical receiver adapted to apply multiple-sampling processing to an optical duobinary signal received over a transmission link in an optical communication system. In one embodiment, the receiver has an optical-to-electrical signal converter coupled to a decoder adapted to process an electrical signal generated by the converter to generate a bit sequence corresponding to the optical signal. To generate a bit value, the decoder first obtains two or more bit estimate values by sampling the electrical signal within a corresponding signaling interval two or more times. The decoder then applies a logical function to the bit estimate values, which produces the corresponding bit value for the bit sequence. Advantageously, embodiments of the present invention improve overall back-to-back (i.e., source-to-destination) system performance, e.g., by reducing the number of decoding errors associated with timing jitter and/or spontaneous beat noise in the received optical signal.
摘要翻译： 一种光接收器，适于对通过光通信系统中的传输链路接收的光双二进制信号应用多采样处理。 在一个实施例中，接收机具有耦合到解码器的光电信号转换器，其适于处理由转换器产生的电信号以产生对应于光信号的比特序列。 为了产生位值，解码器首先通过在相应的信令间隔内对两个或更多次的电信号进行采样来获得两个或更多个比特估计值。 然后，解码器将逻辑功能应用于比特估计值，其产生比特序列的相应比特值。 有利地，本发明的实施例通过减少与接收到的光信号中的定时抖动和/或自发性差拍噪声相关联的解码错误的数量来改进整体背靠背（即，源到目的地）的系统性能 。
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公开(公告)号：US07362977B2
公开(公告)日：2008-04-22
申请号：US10262374
申请日：2002-09-30
CPC分类号： H04B10/2916 , H04B10/2513 , H04B2210/252 , H04B2210/254
摘要： A method for reducing intra-channel, non-linear distortions of an optical signal resulting from non-linear fiber propagation includes applying a polarization mode dispersion (PMD) pre-distortion to an optical signal such that the PMD pre-distortion produces two replica signals of the optical signal spaced by a differential group delay (DGD). The replica signals are adapted for transmission via an optical fiber. The DGD spacing is selected to reduce intra-channel, non-linear distortions imparted by the optical fiber.
摘要翻译： 一种用于减少由非线性光纤传播产生的光信号的通道内，非线性失真的方法包括对光信号施加偏振模色散（PMD）预失真，使得PMD预失真产生两个复制信号 的差分组延迟（DGD）间隔的光信号。 复制信号适于通过光纤传输。 选择DGD间隔以减少由光纤赋予的通道内非线性失真。
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公开(公告)号：US07330669B2
公开(公告)日：2008-02-12
申请号：US10827824
申请日：2004-04-20
IPC分类号： H04B10/06
摘要： An optical receiver adapted to apply multiple-sampling processing to an intermediate frequency (IF) signal generated based on heterodyne detection of an optical communication signal. In one embodiment, the receiver has an optical-to-electrical signal converter coupled to a signal decoder adapted to process the IF signal generated by the converter to generate a bit sequence corresponding to the optical communication signal. To generate a bit value, the signal decoder first obtains two or more sample-bit values by sampling the IF signal two or more times per signaling interval. The decoder then applies a logical function to the sample-bit values, which produces the corresponding bit value for the bit sequence. Due to the multiple-sampling processing, a receiver of the invention does not require the time-consuming fine wavelength tuning of its local oscillator, which advantageously reduces the channel switching time achieved in the receiver compared to that in prior-art heterodyne receivers.
摘要翻译： 一种适于对基于光通信信号的外差检测产生的中频（IF）信号应用多采样处理的光接收器。 在一个实施例中，接收器具有耦合到适于处理由转换器产生的IF信号的信号解码器的光电信号转换器，以产生对应于光通信信号的位序列。 为了产生位值，信号解码器首先通过每个信令间隔对IF信号进行两次或更多次采样来获得两个或更多个采样比特值。 然后，解码器将逻辑功能应用于采样比特值，其产生比特序列的相应比特值。 由于多次采样处理，本发明的接收机不需要对其本地振荡器进行耗时的精细波长调谐，与现有技术的外差接收机相比，有利地降低了在接收机中实现的信道切换时间。
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