公开(公告)号：US06804471B1

公开(公告)日：2004-10-12

申请号：US09475571

申请日：2000-01-05

申请人： Stanislav I. Ionov ,  Robert R. Hayes

发明人： Stanislav I. Ionov ,  Robert R. Hayes

IPC分类号： H04B1004

CPC分类号： H04B10/505 ,  H04B10/508

摘要： A method and apparatus for pulse frequency modulation for analog optical communication. A train of optical pulses is generated. The spectrum of the optical pulses in the train of optical pulses can be broadened to provide a train of broad spectrum optical pulses. The broadening can be provided by self-phase modulation. Alternatively, broad spectrum optical pulses can be provided by merely having the optical pulses be less than 1 ps duration. A desired optical frequency slice from the train of spectrum broadened optical pulses is selected by a tunable Fabry-Perot filter. A desired optical frequency slice from the broad spectrum optical pulses is selected by a tunable Fabry-Perot filter. The tunable Fabry-Perot filter has a pair of Distributed Bragg Reflectors separated by an electro-refractive section. The electro-refractive section has tuning electrodes for applying transverse electric fields to the electro-refractive section, corresponding to an analog waveform being applied to the tuning electrodes, to provide a pulse-frequency modulated train of optical pulses.

摘要翻译： 一种用于模拟光通信的脉冲频率调制的方法和装置。 产生一列光脉冲。 光脉冲序列中的光脉冲的频谱可以变宽以提供一系列广谱光脉冲。 扩展可以通过自相位调制来提供。 或者，可以通过仅使光脉冲小于1ps持续时间来提供广谱光脉冲。 通过可调谐的法布里 - 珀罗滤波器选择来自频谱范围变宽的光脉冲的期望的光频率切片。 通过可调谐法布里 - 珀罗滤波器选择来自广谱光脉冲的期望的光频率切片。 可调式法布里 - 珀罗滤波器具有一对由电折射部分开的分布式布拉格反射器。 电折射部分具有调谐电极，用于将横向电场施加到电折射部分，对应于施加到调谐电极的模拟波形，以提供脉冲频率调制的光脉冲串。

公开(公告)号：US06735398B1

公开(公告)日：2004-05-11

申请号：US09526696

申请日：2000-03-15

申请人： Hossein Izadpanah ,  Stanislav I. Ionov ,  Robert R. Hayes ,  George C. Valley

发明人： Hossein Izadpanah ,  Stanislav I. Ionov ,  Robert R. Hayes ,  George C. Valley

IPC分类号： H04B1004

CPC分类号： H04B10/505 ,  H04B10/504

摘要： A method and system for generating single and multi-channel optical analog pulse-position modulation waveforms are disclosed. The system comprises a frequency modulator, a continuous wave optical source, and an optical modulator. The frequency modulator receives the analog signal and converts the analog signal into a frequency modulated signal. The optical modulator modulates the continuous wave optical source with the frequency modulated signal, to produce the optical pulse-position modulated signal. The method comprises converting an analog input signal into a frequency modulated signal amplifying the frequency modulated signal and producing a large signal therein, modulating a continuous wave optical source with the large signal, therein producing the optical pulse-position modulation signal, and compressing the optical pulse-position modulation signal, therein increasing a processing gain.

摘要翻译： 公开了一种用于产生单通道和多通道光模拟脉冲位置调制波形的方法和系统。 该系统包括频率调制器，连续波光源和光调制器。 频率调制器接收模拟信号并将模拟信号转换成调频信号。 光调制器用调频信号调制连续波光源，产生光脉冲位置调制信号。 该方法包括将模拟输入信号转换为放大调频信号并在其中产生大信号的调频信号，用大信号调制连续波光源，产生光脉冲位置调制信号，并压缩光 脉冲位置调制信号，其中增加处理增益。

公开(公告)号：US20090208209A1

公开(公告)日：2009-08-20

申请号：US12183064

申请日：2008-07-31

申请人： Willie W. Ng ,  Brian N. Limketkai ,  Robert R. Hayes ,  Daniel Yap ,  Peter Petre

发明人： Willie W. Ng ,  Brian N. Limketkai ,  Robert R. Hayes ,  Daniel Yap ,  Peter Petre

IPC分类号： H04J14/02 ,  H01S3/10 ,  H01S3/08 ,  G02F1/295

CPC分类号： G02B6/12007 ,  G02B6/29343 ,  G02B6/29383 ,  G02B6/29395 ,  G02F1/3132 ,  G02F2001/212 ,  G02F2203/15 ,  G02F2203/50

摘要： The present invention describes a microresonator that can be used as a 1:f variable coupler in a unit cell. It is described how a cascade of unit cells can be used to form a tunable, higher-order RF-filter with reconfigurable passbands. The disclosed filter structure can be utilized for the narrowband channelization of RF signals that have been modulated onto optical carriers. It is also disclosed how to utilize add/drop capabilities of the contemplated microdisks to confer connectivity and cascading in two dimensions. The present invention can conveniently provide a wavelength division multiplexing router, where an array of unit cells as provided herein can form a programmable optical switching matrix, through electronic programming of filter parameters.

摘要翻译： 本发明描述了可以在单位电池中用作1：f可变耦合器的微谐振器。 描述了如何使用级联的单位单元来形成具有可重新配置的通带的可调谐，高阶RF滤波器。 所公开的滤波器结构可用于已经调制到光载波上的RF信号的窄带信道化。 还公开了如何利用预期的微盘的添加/删除能力来赋予连接和级联的二维。 本发明可以方便地提供波分复用路由器，其中本文提供的单元阵列阵列可以通过滤波器参数的电子编程形成可编程光开关矩阵。

公开(公告)号：US06456422B1

公开(公告)日：2002-09-24

申请号：US09420627

申请日：1999-10-20

申请人： Robert R. Hayes ,  James H. Schaffner

发明人： Robert R. Hayes ,  James H. Schaffner

IPC分类号： G02F200

CPC分类号： H04B10/675 ,  H04B10/118 ,  H04B10/69

摘要： A method and apparatus for optical frequency modulation discrimination. An optical beam is split into a first optical beam and a second optical beam A first photodetector is provided, the first photodetector providing a first current responsive to the first optical beam input thereon, the first photodetector having a first photodetector spectral response and being biased such that the first current is in a first direction. A second photodetector is also provided, the second photodetector providing a second current responsive to the second optical beam input thereon, the second photodetector having a second photodetector spectral response and being biased such that the second current is in the first direction. An input of a transimpedance amplifier is coupled to an output of the first photodetector and to an input of the second photodetector to provide an output of the transimpedance amplifier proportional to the difference between the first current and the second current. A first optical filter is provided to receive the first optical beam prior to incidence upon the first photodetector and a second optical filter to receive the second optical beam prior to incidence upon the second photodetector, wherein the first photodetector spectral response and the second photodetector spectral response are each broader than respective passbands of the first optical filter and the second optical filter to provide photocurrent vs. optical frequency characteristics determined by the respective first optical filter and the second optical filter.

摘要翻译： 一种用于光频调制鉴别的方法和装置。 光束被分成第一光束，第二光束A设置有第一光电检测器，第一光电检测器提供响应于其上输入的第一光束的第一电流，第一光电检测器具有第一光电检测器光谱响应并被偏置 第一个电流处于第一个方向。 还提供第二光电检测器，第二光电检测器提供响应于其上输入的第二光束的第二电流，第二光电检测器具有第二光电检测器光谱响应并被偏置使得第二电流处于第一方向。 跨阻放大器的输入耦合到第一光电检测器的输出端和第二光电检测器的输入端，以提供与第一电流和第二电流之间的差成比例的跨阻抗放大器的输出。 提供第一光学滤光器以在入射到第一光电检测器之前接收第一光束，以及第二光学滤光器，以在入射到第二光电检测器之前接收第二光束，其中第一光电检测器光谱响应和第二光电检测器光谱响应 各自比第一滤光器和第二滤光器的相应通带宽，以提供由相应的第一滤光器和第二滤光器确定的光电流对光频率特性。

公开(公告)号：US06266173B1

公开(公告)日：2001-07-24

申请号：US09420629

申请日：1999-10-20

申请人： Robert R. Hayes

发明人： Robert R. Hayes

IPC分类号： H04B1006

CPC分类号： H04B10/673 ,  H04B10/118 ,  H04B10/69

摘要： A method and apparatus for converting a frequency modulated lightwave into an electrical signal that is proportional to instantaneous frequency deviations of the frequency modulated lightwave. The frequency modulated lightwave is amplified by an amount equal to or greater than a desired FM processing gain to provide an amplified frequency modulated lightwave. The amplified lightwave is filtered to restrict amplifier noise added to the frequency modulated lightwave to provide a filtered lightwave. The amplitude of the filtered lightwave is limited to remove unwanted amplitude fluctuations to provide a limited lightwave. The limited lightwave is split into a first split lightwave and a second split lightwave. The second split lightwave is delayed relative to the first split lightwave, to provide a delayed second split lightwave. The delayed second split lightwave is combined with the first split lightwave to provide:(1) a sum of first split lightwave fields and delayed second split lightwave fields, and (2) a difference of the first split lightwave fields and the delayed second split lightwave fields, the splitting, delaying and combining providing the sum and the difference having fields with parallel polarizations. The sum is detected by a first photodetector and the difference is detected by a second photodetector, the first photodetector and second photodetector being connected in series with a common terminal therebetween, the common terminal providing to a following amplifier a difference current that is proportional to a difference between first photodetector curent and second photodetector current, the difference current being proportional to instantaneous frequency deviation of the frequency modulated lightwave.

摘要翻译： 一种用于将频率调制光波转换成与频率调制光波的瞬时频率偏差成比例的电信号的方法和装置。 频率调制光波被放大等于或大于期望的FM处理增益的量以提供放大的调频光波。 对放大的光波进行滤波以限制加到调频光波的放大器噪声，以提供滤波后的光波。 滤波光波的幅度被限制以去除不期望的幅度波动以提供有限的光波。 有限的光波被分为第一分裂光波和第二分光波。 第二分裂光波相对于第一分裂光波被延迟，以提供延迟的第二分裂光波。 延迟的第二分裂光波与第一分裂光波组合以提供：（1）第一分裂光波场和延迟的第二分裂光波场的和，以及（2）第一分裂光波场和延迟的第二分裂光波 字段，分割，延迟和组合，提供具有平行偏振的场的和和差。 所述和由第一光电检测器检测，并且差异由第二光电检测器检测，第一光电检测器和第二光电检测器与它们之间的公共端串联连接，公共端向随后的放大器提供与电流成比例的差电流 第一光电检测器和第二光电检测器电流之间的差异，差电流与调频光波的瞬时频率偏差成比例。

公开(公告)号：USRE30794E

公开(公告)日：1981-11-17

申请号：US193731

申请日：1980-10-03

申请人： Robert R. Hayes

发明人： Robert R. Hayes

IPC分类号： B23D71/04

CPC分类号： B23D71/04 ,  Y10T407/1825

摘要： Hand-held scraper includes a body or holder portion to which is removably secured a scraping or cutting blade. The blade is retained in place by camming the mounting tabs at its respective ends into tight frictional locking engagement with a pair of longitudinally spaced apart retaining ribs protruding downwardly in opposite outwardly disposed directions from the underneath side of the holder portion. At least one of the retaining ribs is somewhat flexible to facilitate camming of the blade into and out of assembled engagement with the holder portion with little or no flexing of the mounting tabs and no bending or yielding of the blade body whatsoever. To facilitate removal and replacement of the blade, a movable lever is provided on the underneath side of the holder portion inwardly of one of the mounting tabs. When the lever is manually pushed downwardly, the lever presses against such mounting tab, causing it to cam away from the associated mounting rib thus freeing the blade from the holder.

公开(公告)号：US07856156B2

公开(公告)日：2010-12-21

申请号：US12196936

申请日：2008-08-22

申请人： Keyvan Sayyah ,  Robert R. Hayes

发明人： Keyvan Sayyah ,  Robert R. Hayes

IPC分类号： G02F1/035 ,  G02F1/01 ,  G02F1/03 ,  G02F1/07

CPC分类号： G02F1/0316 ,  G02F1/2255 ,  G02F2201/07 ,  G02F2202/10 ,  G02F2203/21

摘要： There is provided in one of the embodiments of the disclosure a lithium niobate modulator structure for mitigating DC bias drift comprising a highly doped semiconductor layer patterned above an optical waveguide having one or more DC sections and an RF section, wherein a metal layer or contact is in contact with a portion of the semiconductor layer and a buffer layer is deposited in the RF section. There is provided in another embodiment of the disclosure a method for making a lithium niobate electro-optical modulator for mitigation of DC bias drift.

摘要翻译： 在本公开的一个实施例中提供了一种用于减轻DC偏置漂移的铌酸锂调制器结构，其包括在具有一个或多个DC部分和RF部分的光波导上图案化的高掺杂半导体层，其中金属层或接触是 与半导体层的一部分接触，并且缓冲层沉积在RF部分中。 在本公开的另一实施例中提供了一种制造用于减轻直流偏置漂移的铌酸锂电光调制器的方法。

公开(公告)号：US07822082B2

公开(公告)日：2010-10-26

申请号：US10766103

申请日：2004-01-27

申请人： Willie W. Ng ,  Robert R. Hayes ,  Daniel Yap

发明人： Willie W. Ng ,  Robert R. Hayes ,  Daniel Yap

IPC分类号： H01S3/10

CPC分类号： H01S5/02248 ,  H01S5/0656 ,  H01S5/1014 ,  H01S5/141 ,  H01S5/142 ,  H01S5/146

摘要： The present invention relates to a laser transmitter capable of being configured to transmit one of a plurality of wavelengths. Specifically, the laser transmitter may be reconfigured using the resonance passbands of a tunable microresonator coupled with a fixed grating.

摘要翻译： 本发明涉及一种激光发射机，其能够被配置为发射多个波长中的一个。 具体地，可以使用与固定光栅耦合的可调谐微谐振器的谐振通带来重新配置激光发射器。

公开(公告)号：US07813654B1

公开(公告)日：2010-10-12

申请号：US11117656

申请日：2005-04-27

申请人： Willie W. Ng ,  Robert R. Hayes ,  Shubha Kadambe

发明人： Willie W. Ng ,  Robert R. Hayes ,  Shubha Kadambe

IPC分类号： H04B10/04 ,  H04B10/12

CPC分类号： H04B10/505 ,  H04B10/58

摘要： Transversal equalization is used to obtain broadband linearization of photonic modulation. A photonic link comprises a signal path and a feed-forward path. The feed-forward path includes an optical linearizer and a transversal equalizer connected with the optical linearizer. In this way, amplitude and phase matching of the error in the signal path is obtained over a wide bandwidth. This, in turn, enables a broadband enhancement of the link's spur free dynamic range (SFDR).

摘要翻译： 使用横向均衡来获得光子调制的宽带线性化。 光子链路包括信号路径和前馈路径。 前馈路径包括光学线性化器和与光学线性化器连接的横向均衡器。 以这种方式，在宽带宽上获得信号路径中的误差的幅度和相位匹配。 这反过来又能够实现链路无刺激动态范围（SFDR）的宽带增强。

公开(公告)号：US20100046878A1

公开(公告)日：2010-02-25

申请号：US12196936

申请日：2008-08-22

申请人： Keyvan Sayyah ,  Robert R. Hayes

发明人： Keyvan Sayyah ,  Robert R. Hayes

IPC分类号： G02F1/035 ,  H01L21/02

CPC分类号： G02F1/0316 ,  G02F1/2255 ,  G02F2201/07 ,  G02F2202/10 ,  G02F2203/21

摘要： There is provided in one of the embodiments of the disclosure a lithium niobate modulator structure for mitigating DC bias drift comprising a highly doped semiconductor layer patterned above an optical waveguide having one or more DC sections and an RF section, wherein a metal layer or contact is in contact with a portion of the semiconductor layer and a buffer layer is deposited in the RF section. There is provided in another embodiment of the disclosure a method for making a lithium niobate electro-optical modulator for mitigation of DC bias drift.

摘要翻译： 在本公开的一个实施例中提供了一种用于减轻DC偏置漂移的铌酸锂调制器结构，其包括在具有一个或多个DC部分和RF部分的光波导上图案化的高掺杂半导体层，其中金属层或接触是 与半导体层的一部分接触，并且缓冲层沉积在RF部分中。 在本公开的另一实施例中提供了一种制造用于减轻直流偏置漂移的铌酸锂电光调制器的方法。