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。

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。

公开(公告)号：US20120251126A1

公开(公告)日：2012-10-04

申请号：US13077149

申请日：2011-03-31

申请人： Peter J. Winzer ,  Christopher Richard Doerr

发明人： Peter J. Winzer ,  Christopher Richard Doerr

IPC分类号： G02B6/02 ,  H04B10/12 ,  G02B6/28 ,  G02B6/028 ,  G02B6/036

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。

公开(公告)号：US08509581B2

公开(公告)日：2013-08-13

申请号：US13077149

申请日：2011-03-31

申请人： Peter J. Winzer ,  Christopher Richard Doerr

发明人： Peter J. Winzer ,  Christopher Richard Doerr

IPC分类号： G02B6/02 ,  H04B10/12

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。

公开(公告)号：US20090169148A1

公开(公告)日：2009-07-02

申请号：US12006194

申请日：2007-12-31

申请人： Christopher Richard Doerr ,  Peter J. Winzer

发明人： Christopher Richard Doerr ,  Peter J. Winzer

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.

公开(公告)号：US07123402B1

公开(公告)日：2006-10-17

申请号：US11333105

申请日：2006-01-17

申请人： Christopher Richard Doerr ,  Peter J. Winzer

发明人： Christopher Richard Doerr ,  Peter J. Winzer

IPC分类号： G02F2/02 ,  H01S3/098

CPC分类号： H04J14/02 ,  G02F1/3532 ,  G02F2203/56 ,  H04J14/0224

摘要： Method and apparatus for creating a clone relationship between two or more optical-frequency comb sources (OFCSs). In one embodiment, the invention is an apparatus having (i) first and second OFCSs, each adapted to generate a respective frequency comb, and (ii) means for locking the phases of two comb lines of the first OFCS and the phases of the respective two comb lines of the second OFCS to create a full or partial clone relationship between these two OFCSs. In one system configuration, the locking of the phases of the first and second OFCSs is achieved by locking the phases of two selected comb lines generated by each of these OFCSs to the phases of the respective comb lines generated by the same (third, reference) OFCS. In an alternative system configuration, the locking of the phases of the first and second OFCSs is achieved by locking the phases of two selected comb lines generated by the first OFCS to the phases of the respective comb lines generated by the third OFCS, and locking the phases of two selected comb lines generated by the second OFCS to the phases of the respective comb lines generated by the first OFCS.

摘要翻译： 用于在两个或多个光频梳状源（OFCS）之间创建克隆关系的方法和装置。 在一个实施例中，本发明是一种装置，其具有（i）第一和第二OFCS，每个适于产生相应的频率梳，以及（ii）用于锁定第一OFCS的两个梳状线的相位和相应的 第二个OFCS的两条梳线在这两个OFCS之间创建完全或部分克隆关系。 在一个系统配置中，通过将由这些OFCS中的每一个生成的两个选择的梳状线的相位锁定到由相同（第三，参考））产生的相应梳状线的相位来实现第一和第二OFCS的相位的锁定， OFCS。 在替代系统配置中，通过将由第一OFCS产生的两个所选择的梳状线的相位锁定到由第三OFCS产生的相应梳线的相位来锁定第一和第二OFCS的相位的锁定， 由第二OFCS产生的两个所选梳线的相位与由第一OFCS产生的相应梳线的相位相关。

公开(公告)号：US07042629B2

公开(公告)日：2006-05-09

申请号：US10782003

申请日：2004-02-19

申请人： Christopher Richard Doerr ,  Christophe J. Dorrer ,  Peter J. Winzer

发明人： Christopher Richard Doerr ,  Christophe J. Dorrer ,  Peter J. Winzer

IPC分类号： G02F2/00 ,  G02F1/01 ,  H04B10/06

CPC分类号： G01J11/00

摘要： A linear optical sampling apparatus, temporally samples a modulated optical signal using the amplitude of the interference of its electric field with the electric field of a laser pulse. The apparatus includes a 90° optical hybrid that combines the optical signal and laser pulse in order to generate two quadratures interference samples SA and SB. A processor compensates for optical and electrical signal handling imperfections in the hybrid, balanced detectors, and A/D converters used in the optical sampling apparatus. The processor numerically scales the two quadratures interference samples SA and SB over a large collection of samples by imposing that the average = =0 and = and then minimizes 2 /( + ) =cos(φB−φA)). This is done by adjusting the phase between the two quadratures (ideally either −π/2 or +π/2) so that cos(φB−φA)) is zero. The processor then generates a demodulated sample signal using the quadratures interference samples SA and SB. According to one feature, the hybrid sets the relative phase between two quadratures of their interferometric component so that the phase sensitivity inherent to linear optics is removed. A variety of hybrid arrangements is disclosed that can be implemented using integrated waveguide technology. The apparatus enables sampling of picosecond pulses up to 640 Gb/s with high sensitivity and temporal resolution.

摘要翻译： 线性光学采样装置利用其电场的干涉幅度与激光脉冲的电场在时间上对调制光信号进行采样。 该装置包括组合光信号和激光脉冲以产生两个正交干涉样本S A和B B的90°光混合。 处理器补偿在光采样装置中使用的混合，平衡检测器和A / D转换器中的光信号和电信号处理缺陷。 处理器通过将平均值 A 数字地对两个正交干涉样本S A S和S B B进行数字缩放， =＆lt; S＆lt; B＆lt; B＆lt; B＆lt; 2＆gt;＆lt; 2＆lt; / SUP >>，然后最小化2 A /（ 2 +＆lt; S＆lt; B＆lt; 2＆gt; 2＆lt; / SUP＆gt;）= cos（phi）。 这是通过调整两个正交之间的相位（理想地为-pi / 2或+ pi / 2）来完成的，以使得cos（phi-B-ψA） 零。 然后，处理器使用正交干涉样本S SUB和S B B生成解调采样信号。 根据一个特征，混合器设置它们的干涉分量的两个正交之间的相对相位，使得线性光学器件固有的相位灵敏度被去除。 公开了可以使用集成波导技术实现的各种混合布置。 该器件能够以高灵敏度和时间分辨率对高达640 Gb / s的皮秒脉冲进行采样。