专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US06788833B1 Method and system for suppressing signal distortions associated with nonlinearity in optical fibers 失效
标题翻译：用于抑制与光纤中的非线性有关的信号失真的方法和系统
公开(公告)号：US06788833B1
公开(公告)日：2004-09-07
申请号：US10413967
申请日：2003-04-15
申请人： Caroline Brisson , René-Jean Essiambre , Robert M. Jopson
发明人： Caroline Brisson , René-Jean Essiambre , Robert M. Jopson
IPC分类号： G02F1035
CPC分类号： H04B10/2543
摘要： A method and system for suppressing signal distortions in optical signals associated with nonlinearity in optical fibers includes propagating an optical signal through a transmission medium, the transmission medium comprising a sufficiently low dispersion such that a nonlinear distortion imparted on the propagating optical signal by the transmission medium is imprinted primarily on an optical field phase of the optical signal, and converting the propagated optical signal to an electrical signal such that the optical field phase information of the optical signal is not translated into the electrical domain.
摘要翻译：用于抑制与光纤中的非线性相关联的光信号中的信号失真的方法和系统包括通过传输介质传播光信号，传输介质包括足够低的色散，使得由传输介质赋予传播光信号的非线性失真主要印在光信号的光场相位上，并将传播的光信号转换为电信号，使得光信号的光场相位信息不被转换成电域。

2. 发明授权

US5532868A Apparatus and method for compensating chromatic dispersion produced in optical phase conjugation or other types of optical signal conversion 失效
标题翻译：用于补偿在光相位共轭或其他类型的光信号转换中产生的色散的装置和方法
公开(公告)号：US5532868A
公开(公告)日：1996-07-02
申请号：US311481
申请日：1994-09-23
申请人： Alan H. Gnauck , Robert M. Jopson
发明人： Alan H. Gnauck , Robert M. Jopson
IPC分类号： G02F1/35 , G02F2/00 , H04B10/02 , H04B10/18 , H04J14/00 , H04J14/02
CPC分类号： H04B10/2531 , H04B10/2543
摘要： An apparatus and method for providing dispersion compensation for chromatic dispersion introduced in the signal conversion of an optical signal. An exemplary apparatus in accordance with the present invention includes a nonlinear conversion medium arranged within an optical signal path of the optical signal. The conversion medium receives the optical signal and generates a converted optical signal therefrom. At least one dispersion compensator is arranged within the signal path to provide an amount of chromatic dispersion suitable to offset a portion of the chromatic dispersion introduced in the converted signal by the nonlinear conversion medium. The nonlinear medium may be a length of dispersion-shifted fiber used to phase conjugate and/or frequency shift an input optical signal in an optical system utilizing, for example, optical phase conjugation to cancel the effects of fiber nonlinearities. The dispersion compensator may be placed in the optical signal path either before or after the nonlinear conversion medium, or may be distributed within the medium.
摘要翻译：一种用于在光信号的信号转换中引入的色散提供色散补偿的装置和方法。根据本发明的示例性装置包括布置在光信号的光信号路径内的非线性转换介质。转换介质接收光信号并从其产生转换后的光信号。至少一个色散补偿器被布置在信号路径内，以提供适合于通过非线性转换介质偏移在转换信号中引入的色散的一部分的色散量。非线性介质可以是色散位移光纤的长度，其用于使用例如光相位共轭来消除光纤非线性效应的光学系统中的输入光信号的相位共轭和/或频移。色散补偿器可以在非线性转换介质之前或之后放置在光信号路径中，或者可以分布在介质内。

3. 发明授权

US5386314A Polarization-insensitive optical four-photon mixer with orthogonally-polarized pump signals 失效
标题翻译：具有正交极化泵浦信号的极化不敏感光学四光子混合器
公开(公告)号：US5386314A
公开(公告)日：1995-01-31
申请号：US120118
申请日：1993-09-10
申请人： Robert M. Jopson
发明人： Robert M. Jopson
IPC分类号： G02F1/35 , G02F1/39 , H01S3/10
CPC分类号： G02F1/397 , G02F1/3536
摘要： The present invention provides an apparatus and method for performing polarization-insensitive four-photon mixing of optical signals. The polarization-insensitive optical mixer receives an input optical signal and two substantially orthogonally polarized pump signals. The input optical signal and the two substantially orthogonally polarized pump signals are combined in a beam combiner and then four-photon mixed in a first nonlinear mixing device to produce a number of mixing products. The two substantially orthogonally polarized pump signals may be generated in an orthogonal pump signal generator which includes a second nonlinear mixing device for four-photon mixing the first pump signal and a mixing signal to produce a second pump signal which is a phase conjugate of the first pump signal. Certain of the mixing products represent phase conjugates of the input optical signal, and are therefore useful in compensating for chromatic distortion in optical fiber.
摘要翻译：本发明提供一种用于执行光信号的偏振不敏感四光子混合的装置和方法。偏振不敏感光学混合器接收输入光信号和两个基本正交极化的泵浦信号。输入光信号和两个基本上正交极化的泵浦信号在光束组合器中组合，然后在第一非线性混合装置中混合四光子以产生多个混合产物。两个基本上正交极化的泵浦信号可以在正交泵浦信号发生器中产生，其包括用于四光子混合第一泵浦信号和混合信号的第二非线性混合装置，以产生第二泵浦信号，该第二泵浦信号是第一泵信号。某些混合产物表示输入光信号的相位共轭，因此可用于补偿光纤中的色失真。

4. 发明授权

US06385356B1 Method and apparatus for compensating for higher order PMD in a fiber transmission system 有权
标题翻译：用于补偿光纤传输系统中高阶PMD的方法和装置
公开(公告)号：US06385356B1
公开(公告)日：2002-05-07
申请号：US09468968
申请日：1999-12-22
申请人： Robert M. Jopson , Herwig Kogelnik , Lynn E. Nelson
发明人： Robert M. Jopson , Herwig Kogelnik , Lynn E. Nelson
IPC分类号： G02B600
CPC分类号： G02B6/278 , G02B6/29394 , H04B10/2569
摘要： In an optical fiber transmission system, higher order PMD compensation is realized with a sweeper device at the input to the fiber which converts the polarization of the light beam into a frequency dependent polarization whose rate of change is similar to the rate of change of one of the PSPs of the fiber. The frequency dependent polarization of the light beam is then aligned with one of the frequency-dependent PSPs at the input of the fiber. Furthermore, differential group delay dispersion for a given frequency can be reduced by employing a chromatic dispersion compensator prior to the receiver end of the fiber transmission system. Control of the polarization of the light beam can be facilitated by monitoring PMD in the system, or alternatively, monitoring an effect of PMD in the system, such as bit error rates.
摘要翻译：在光纤传输系统中，通过在光纤的输入处的扫掠装置实现更高阶的PMD补偿，其将光束的偏振转换成频率相关极化，其变化率类似于光纤的PSP。然后将光束的频率相关极化与光纤输入端的频率依赖PSP之一对准。此外，通过在光纤传输系统的接收机端之前采用色散补偿器，可以减小给定频率的差分群延迟色散。通过监视系统中的PMD，或者监视PMD在系统中的影响，比如误码率，可以方便控制光束的偏振。

5. 发明授权

US4973120A Optical isolator with resonant cavity having gyrotropic material 失效
标题翻译：具有谐振腔的光隔离器具有陀螺材料
公开(公告)号：US4973120A
公开(公告)日：1990-11-27
申请号：US345861
申请日：1989-05-01
申请人： Robert M. Jopson , Julian Stone
发明人： Robert M. Jopson , Julian Stone
IPC分类号： G02B27/28 , G02B6/26 , G02F1/09
CPC分类号： G02B6/2746 , G02F1/093
摘要： The invention is an optical isolator. In one embodiment the optical isolator comprises two linear polarizers, one at the input of the isolator and the other at the output. Positioned between the input and the output linear polarizer is a gyrotropic medium located within a resonant cavity such as a Fabry-Perot cavity. Interposed between the linear polarizer at the input of the isolator and the resonant cavity is a first polarization conversion means for converting received plane polarized optical energy from said linear polarizer to circularly polarized optical energy and interposed between the resonant cavity and the linear polarizer at the output of the isolator is a second polarization conversion means for converting received circular polarized optical energy from said resonant cavity to plane polarized optical energy. In an embodiment, the resonant cavity comprising the gyrotropic medium becomes the filtering medium to block reflected optical radiation.

6. 发明授权

US06385357B1 Method and apparatus for compensating for higher order paid PMD in a fiber transmission system at the fiber output 有权
标题翻译：用于在光纤输出端补偿光纤传输系统中高阶支付PMD的方法和装置
公开(公告)号：US06385357B1
公开(公告)日：2002-05-07
申请号：US09533044
申请日：2000-03-22
申请人： Robert M. Jopson , Herwig Kogelnik , Lynn E. Nelson
发明人： Robert M. Jopson , Herwig Kogelnik , Lynn E. Nelson
IPC分类号： G02B600
CPC分类号： G02B6/278 , H04B10/2569
摘要： In an optical fiber transmission system, higher order PMD compensation is realized at the output of the transmission fiber. A compensator is placed at the output of the transmission fiber whose PMD vector is equal in magnitude and opposite in direction to the PMD vector at the output of the transmission fiber. The compensator PMD vector sweeps at a rate that matches the frequency sweep rate of the PMD vector at the fiber output. To compensate for second order PMD while avoiding the introduction of higher order PMD effects, a planar sweep is advantageously employed. A polarization pair controller is employed in advance of the compensator to align the PMD vector at the compensator input with the PMD vector at the fiber output so that the two cancel as well as to align the rotational axis of the compensator PMD vector with the rotational axis of the fiber PMD vector. The system may also include a monitoring device to monitor the compensation of fiber PMD, to determine the need for adjustments to the system.
摘要翻译：在光纤传输系统中，在传输光纤的输出端实现更高阶的PMD补偿。补偿器放置在传输光纤的输出处，其PMD矢量在传输光纤的输出处的幅度相等于PMD矢量的方向相反。补偿器PMD矢量以与光纤输出端的PMD矢量的频率扫描速率相匹配的速率扫描。为了补偿二阶PMD，同时避免引入更高阶PMD效应，有利地采用平面扫描。在补偿器之前采用极化对控制器，以将补偿器输入处的PMD矢量与光纤输出端的PMD矢量对准，使得两者抵消以及使补偿器PMD矢量的旋转轴与旋转轴线的纤维PMD载体。该系统还可以包括用于监视光纤PMD的补偿的监视装置，以确定对系统进行调整的需要。

7. 发明授权

US5101291A Optical frequency conversion device 失效
标题翻译：光变频装置
公开(公告)号：US5101291A
公开(公告)日：1992-03-31
申请号：US635059
申请日：1990-12-28
申请人： Robert M. Jopson
发明人： Robert M. Jopson
IPC分类号： G02F1/01 , H04J14/02
CPC分类号： H04J14/02 , G02F1/01 , G02F2203/54 , G02F2203/56
摘要： An optical apparatus for generating an optical frequency comb from an optical input signal is realized by transmitting the optical signal through an optical circuit comprising an optical amplifier and a Bragg cell configured in an optical cavity. By aligning the cavity such that the incident light is deflected by the Bragg cell and recirculated therein, on each pass within the cavity the incident light is frequency shifted by a predetermined frequency, producing a comb of optical frequencies, each a time-delayed replica of the incident light. Importantly, the optical amplifier positioned within the cavity substantially compensates for any cavity loss, enhancing the output uniformity of each generated carrier.
摘要翻译：从光输入信号产生光频梳的光学装置通过光学信号通过包括光放大器和配置在光腔中的布拉格单元的光电路传输来实现。通过使空腔对准使得入射光被布拉格细胞偏转并在其中再循环，在空腔内的每次通过中，入射光被偏移预定的频率，产生光学频率梳，每个都是时间延迟的复制事件光。重要的是，位于空腔内的光放大器基本上补偿任何空腔损耗，增强每个产生的载体的输出均匀性。

8. 发明授权

US07145715B2 Multiple pump parametric apparatus having no idler broadening 失效
标题翻译：多泵参数设备没有惰轮加宽
公开(公告)号：US07145715B2
公开(公告)日：2006-12-05
申请号：US10948038
申请日：2004-09-23
申请人： Andrew R. Chraplyvy , Alan H. Gnauk , Robert M. Jopson , Stojan Radic
发明人： Andrew R. Chraplyvy , Alan H. Gnauk , Robert M. Jopson , Stojan Radic
IPC分类号： G02F1/39 , G02F1/01
CPC分类号： G02F1/353 , G02F1/39
摘要： A multi-pump phase modulator apparatus and operating method uses only one phase modulator to eliminate SBS without degrading idler(s). The single phase modulator phase modulates multiple pump signals to form multiple phase modulated pump signals using a modulation signal having a modulation period. A delay apparatus delays a first wavelength group by the modulation period relative to other wavelength groups. A combiner combines the delayed first wavelength group with the other wavelength groups to form a combined modulated multiple pump signal. In one embodiment a multi-pump phase parametric apparatus comprises the multi-pump phase modulator apparatus combined with a parametric apparatus to generate an amplified input signal and one or more idlers. Other embodiments of the multi-pump phase conjugator apparatus are used as part of an Optical Switch, Sampler, Tributary Extractor, and Regenerator.
摘要翻译：多泵相位调制器装置和操作方法仅使用一个相位调制器来消除SBS而不降低惰轮。单相调制器相位调制多个泵浦信号，以使用具有调制周期的调制信号形成多个相位调制的泵浦信号。延迟装置将第一波长组相对于其他波长组延迟调制周期。组合器将延迟的第一波长组与其它波长组合以形成组合的调制多泵信号。在一个实施例中，多泵相参数装置包括与参数装置结合以产生放大的输入信号和一个或多个惰轮的多泵相位调制器装置。多泵相位共轭装置的其他实施例被用作光开关，采样器，支流提取器和再生器的一部分。

9. 发明授权

US5619320A Method and apparatus for measuring dispersion zero along an optical fiber 失效
标题翻译：沿光纤测量色散零的方法和装置
公开(公告)号：US5619320A
公开(公告)日：1997-04-08
申请号：US551216
申请日：1995-10-31
申请人： Michael H. Eiselt , Robert M. Jopson , Rogers H. Stolen
发明人： Michael H. Eiselt , Robert M. Jopson , Rogers H. Stolen
IPC分类号： G01M11/00 , G01N21/84 , G01D11/00
CPC分类号： G01M11/332 , G01M11/331 , G01M11/335 , G01M11/338
摘要： A method and apparatus for non-destructively measuring dispersion-zero wavelengths along an optical fiber makes use of a four-photon-mixing technique to generate mixed, amplified, idler signals at positions or ranges along the fiber. The dispersion zero wavelengths are then calculated using the wavelengths of the generated idler signals after taking into account inaccuracies due to higher order phenomena.
摘要翻译：沿着光纤非依赖地测量色散零波长的方法和装置利用四光子混合技术在沿光纤的位置或范围产生混合的，放大的惰轮信号。然后在考虑到由于较高阶现象引起的不准确之后，使用所产生的惰轮信号的波长来计算色散零波长。

10. 发明授权

US4918396A Monitoring and/or control of optical amplifiers 失效
标题翻译：光放大器的监控和/或控制
公开(公告)号：US4918396A
公开(公告)日：1990-04-17
申请号：US333218
申请日：1989-04-05
申请人： Thirumala R. Halemane , Bartley C. Johnson , Robert M. Jopson
发明人： Thirumala R. Halemane , Bartley C. Johnson , Robert M. Jopson
IPC分类号： H01S5/00 , H01S5/068 , H01S5/50 , H04B10/17
CPC分类号： H04B10/2931 , H01S5/0014 , H01S5/50 , H04B10/2914 , H01S5/0028 , H01S5/06808
摘要： Briefly, in this invention, the output optical power of an optical amplifier is determined by detecting and measuring the electrical signal induced on the bias lead of the optical amplifier when an optical data stream with additional amplitude modulation passes through the optical amplifier. This additional amplitude modulation can consist of a base band signal, a pilot tone and/or a sub-carrier which is amplitude modulated, frequency modulated or phase modulated. The modulation depth and bandwidth of the additional amplitude modulation should be kept small enough that the data stream is not excessively affected. The induced electrical signal provides a measurement of the optical power at the output facet of the optical amplifier. Control of the output power of the optical amplifier is effected by controlling the bias current applied to the bias lead of the optical amplifier. Thus, the output power of an optical amplifier can be monitored and telemetry signals can be received without interception of the data stream. The additional amplitude modulation of the data stream can be effected at the transmitter or by modulation of the bias current of an optical amplifier for transmission downstream. With this invention, no optical power is lost when the output power generated by an optical amplifier is monitored and modulation of the data stream can be effected without the use of additional optical components.
摘要翻译：简而言之，在本发明中，当具有附加幅度调制的光数据流通过光放大器时，通过检测和测量在光放大器的偏置引线上感应的电信号来确定光放大器的输出光功率。该附加幅度调制可以由基带信号，导频音和/或被调幅，调频或相位调制的子载波组成。附加幅度调制的调制深度和带宽应保持足够小，使得数据流不会受到过度影响。感应电信号提供了在光放大器的输出端处的光功率的测量。通过控制施加到光放大器的偏置引线的偏置电流来实现光放大器的输出功率的控制。因此，可以监视光放大器的输出功率，并且可以接收遥测信号而不拦截数据流。数据流的附加幅度调制可以在发射机处进行，也可以通过调制用于下行传输的光放大器的偏置电流来实现。利用本发明，当监视由光放大器产生的输出功率并且可以在不使用附加的光学部件的情况下实现数据流的调制时，不会损失光功率。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式