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    Polarization-independent four-wave mixing in a birefringent fiber
    1.
    发明授权
    Polarization-independent four-wave mixing in a birefringent fiber 有权
    双折射光纤中的极化独立四波混频

    公开(公告)号：US07764423B2

    公开(公告)日：2010-07-27

    申请号：US12259389

    申请日：2008-10-28

    申请人： Colin J. McKinstrie ,  Chongjin Xie

    发明人： Colin J. McKinstrie ,  Chongjin Xie

    IPC分类号： G02F1/35 ,  H04B10/00

    CPC分类号： G02F1/395 ,  G02F1/3536

    摘要： A two-pump optical parametric device (OPD) having a nonlinear birefringent fiber, in which various four-wave mixing (FWM) processes can occur. The OPD applies, to the nonlinear birefringent fiber, two pump waves, each polarized at about 45 degrees with respect to a birefringence axis of the fiber, and a polarized input signal. A relevant FWM process couples the pump waves and the signal to cause the fiber to generate a desired output signal. In one configuration, the relevant FWM process is inverse modulational interaction, which causes the desired output signal to be generated through amplification or attenuation of the input signal. In another configuration, the relevant FWM process is phase conjugation, which causes the desired output signal to be generated through amplification of the input signal. In yet another configuration, the relevant FWM process is Bragg scattering, which causes the desired output signal to be generated as a corresponding idler signal.

    摘要翻译： 具有非线性双折射光纤的双泵光参量装置（OPD），其中可发生各种四波混频（FWM）处理。 OPD对非线性双折射光纤应用两个泵浦波，每个泵波相对于光纤的双折射轴以约45度偏振，并且偏振输入信号。 相关的FWM过程耦合泵浦波和信号以使光纤产生期望的输出信号。 在一种配置中，相关的FWM过程是反向调制交互，这导致通过输入信号的放大或衰减来产生期望的输出信号。 在另一种配置中，相关的FWM过程是相位共轭，其通过放大输入信号来产生期望的输出信号。 在另一个配置中，相关的FWM过程是布拉格散射，其使得期望的输出信号被产生为相应的惰轮信号。

    Two-pump optical parametric devices having reduced stimulated Raman scattering noise levels
    2.
    发明授权
    Two-pump optical parametric devices having reduced stimulated Raman scattering noise levels 有权
    具有减少的受激拉曼散射噪声水平的双泵光学参数装置

    公开(公告)号：US07630126B2

    公开(公告)日：2009-12-08

    申请号：US11172104

    申请日：2005-06-30

    申请人： Colin J. McKinstrie

    发明人： Colin J. McKinstrie

    IPC分类号： G02F1/35 ,  G02F2/02

    CPC分类号： G02F1/395 ,  G02F1/397 ,  H04B10/2537

    摘要： Two-pump optical parametric devices (OPDs), and methods of operating the same, generate desired output signals and idlers having reduced stimulated Raman scattering (SRS) noise levels. When the two-pump OPD is used as a two-pump optical parametric amplifier (OPA), the pumps are polarized perpendicular to each other, and the lower-frequency sideband (signal or idler) is polarized parallel to the lower-frequency pump (perpendicular to the higher-frequency pump). The desired output may be an amplified signal or a generated idler. When the two-pump OPD is used as a two-pump optical frequency converter (OFC), the pumps can be polarized parallel to one another, in which case the signal and idler are both perpendicular to the pumps, or perpendicular to one another, in which case the lower-frequency sideband (signal or idler) is polarized parallel to the lower-frequency pump (perpendicular to the higher-frequency pump).

    摘要翻译： 双泵光参量装置（OPD）及其操作方法产生具有减少的受激拉曼散射（SRS）噪声水平的期望的输出信号和惰轮。 当双泵OPD用作双泵光参量放大器（OPA）时，泵彼此垂直偏振，低频边带（信号或惰轮）被平行于低频泵（ 垂直于高频泵）。 期望的输出可以是放大信号或产生的惰轮。 当双泵OPD用作双泵光频变频器（OFC）时，泵可以彼此平行极化，在这种情况下，信号和惰轮都垂直于泵，或垂直于彼此， 在这种情况下，低频边带（信号或惰轮）被平行于低频泵（垂直于较高频率的泵）极化。

    Optical buffer employing four-wave mixing
    3.
    发明授权
    Optical buffer employing four-wave mixing 有权

    公开(公告)号：US07436580B2

    公开(公告)日：2008-10-14

    申请号：US11646190

    申请日：2006-12-27

    申请人： Colin J. McKinstrie

    发明人： Colin J. McKinstrie

    IPC分类号： G02F2/02 ,  H04B10/12

    CPC分类号： G02F1/3536

    摘要： An optical buffer employing Bragg scattering (BS), in which two pump signals are combined with an input (data) signal in a four-wave mixing (FWM) medium to frequency convert the input signal into an idler signal, which is applied to a dispersive medium, in which the idler signal propagates at a speed different from that of the input signal. By selectively turning on and off a pump, e.g., at bit-level switching rates, the BS-based frequency conversion can be selectively performed on particular bits in the input signal, e.g., to generate an output signal having reordered bits. A BS-based optical buffer can (1) be tuned to achieve different amounts of delay; (2) support single-channel or multiple-channel, classical or quantal communications; (3) be implemented with co-phased pump-phase modulation to suppress stimulated Brillouin scattering, while inhibiting spectral broadening of the idler signal; and (4) provide polarization independence using standard polarization-diversity techniques.

    Optical buffer employing four-wave mixing
    4.
    发明申请
    Optical buffer employing four-wave mixing 有权
    采用四波混频的光缓冲器

    公开(公告)号：US20080158656A1

    公开(公告)日：2008-07-03

    申请号：US11646190

    申请日：2006-12-27

    申请人： Colin J. McKinstrie

    发明人： Colin J. McKinstrie

    IPC分类号： G02F2/02

    CPC分类号： G02F1/3536

    摘要： An optical buffer employing Bragg scattering (BS), in which two pump signals are combined with an input (data) signal in a four-wave mixing (FWM) medium to frequency convert the input signal into an idler signal, which is applied to a dispersive medium, in which the idler signal propagates at a speed different from that of the input signal. By selectively turning on and off a pump, e.g., at bit-level switching rates, the BS-based frequency conversion can be selectively performed on particular bits in the input signal, e.g., to generate an output signal having reordered bits. A BS-based optical buffer can (1) be tuned to achieve different amounts of delay; (2) support single-channel or multiple-channel, classical or quantal communications; (3) be implemented with co-phased pump-phase modulation to suppress stimulated Brillouin scattering, while inhibiting spectral broadening of the idler signal; and (4) provide polarization independence using standard polarization-diversity techniques.

    摘要翻译： 使用布拉格散射（BS）的光学缓冲器，其中两个泵浦信号与四波混频（FWM）介质中的输入（数据）信号组合，以将输入信号频率转换成空载信号，其被应用于 分散介质，其中惰轮信号以与输入信号不同的速度传播。 通过例如以比特级切换速率选择性地打开和关闭泵，可以对输入信号中的特定比特选择性地执行基于BS的频率转换，以产生具有重排序比特的输出信号。 基于BS的光学缓冲器可以（1）被调谐以实现不同的延迟量; （2）支持单通道或多通道，经典或数字通信; （3）采用同相泵浦相位调制来抑制受激布里渊散射，同时抑制惰轮信号的频谱变宽; 和（4）使用标准极化分集技术提供极化独立性。

    Optical transport system for two-carrier signals
    5.
    发明授权
    Optical transport system for two-carrier signals 有权
    双载波信号光传输系统

    公开(公告)号：US08897649B2

    公开(公告)日：2014-11-25

    申请号：US13238737

    申请日：2011-09-21

    申请人： Colin J. McKinstrie

    发明人： Colin J. McKinstrie

    IPC分类号： H04B10/00 ,  H04B10/25 ,  H04B10/291

    CPC分类号： H04B10/25 ,  H04B10/291

    摘要： In one embodiment, the optical transport system has an optical transmitter, an optical receiver, and one or more phase-sensitive amplifiers (PSAs) disposed within an optical link that connects the optical transmitter and receiver. The optical transmitter employs a first nonlinear optical process to generate a two-carrier signal in a manner that makes this signal suitable for phase-sensitive amplification. The PSAs employ a second nonlinear optical process to optically amplify the two-carrier signal in a phase-sensitive manner to counteract the attenuation imposed onto the two-carrier signal by lossy components of the optical link. The optical receiver employs a third nonlinear optical process in a manner that enables the receiver to beneficially use redundancies in the two-carrier signal, e.g., for an SNR gain. The optical transport system can advantageously be implemented to have better noise properties than a comparable conventional system, which enables a commensurate increase in the data-transport capacity.

    摘要翻译： 在一个实施例中，光传送系统具有设置在连接光发射机和接收机的光链路内的光发射机，光接收机和一个或多个相敏放大器（PSA）。 光发射机采用第一非线性光学过程以产生适合于相位敏感放大的方式产生双载波信号。 PSAs采用第二非线性光学过程以相敏方式光学放大双载波信号，以抵消通过光链路的有损分量施加到双载波信号上的衰减。 光接收机采用第三非线性光学处理，使得接收机有利地在双载波信号中使用冗余，例如用于SNR增益。 光传输系统可以有利地实现为具有比可比较的常规系统更好的噪声特性，这使得能够相应地增加数据传输能力。

    Parametric amplification using two pump waves
    7.
    发明授权
    Parametric amplification using two pump waves 有权
    使用两个泵浦波的参数放大

    公开(公告)号：US07164526B2

    公开(公告)日：2007-01-16

    申请号：US11068555

    申请日：2005-02-28

    申请人： Colin J. McKinstrie ,  Stoian Radic

    发明人： Colin J. McKinstrie ,  Stoian Radic

    IPC分类号： G02F1/39 ,  H03F7/00

    CPC分类号： G02F1/395 ,  G02F1/397

    摘要： An optical parametric amplifier (OPA) driven with at least two pump waves. The pump waves may be configured such that the OPA produces uniform exponential gain over a range of wavelengths that extends, for example, at least 30 nm on either side of the average pump-wave wavelength. In addition, since the Brillouin scattering limit applies to each pump wave independently, substantially twice the amount of energy may be pumped into an OPA of the present invention compared to that in the corresponding single pump-wave OPA of the prior art. An OPA of the present invention may be used in a WDM communication system and configured for simultaneous signal amplification and wavelength conversion.

    摘要翻译： 用至少两个泵浦波驱动的光学参量放大器（OPA）。 泵浦波可以被配置为使得OPA在波长范围内产生均匀的指数增益，该波长范围例如在平均泵波波长的任一侧上延伸至少30nm。 此外，由于布里渊散射极限独立地适用于每个泵浦波，与现有技术的相应的单个泵波OPA相比，基本上可以将能量的两倍量泵送到本发明的OPA中。 本发明的OPA可以用在WDM通信系统中并被配置用于同时进行信号放大和波长转换。

    Phase-sensitive amplification in a fiber
    8.
    发明授权
    Phase-sensitive amplification in a fiber 有权
    纤维中的相敏扩增

    公开(公告)号：US07483203B2

    公开(公告)日：2009-01-27

    申请号：US11154483

    申请日：2005-06-16

    申请人： Colin J. McKinstrie

    发明人： Colin J. McKinstrie

    IPC分类号： H04B10/17

    CPC分类号： H01S3/06758 ,  H01S3/005 ,  H01S3/0078 ,  H01S3/06725

    摘要： A method of and device for generating an amplified optical signal directly in an optical fiber by way of phase-sensitive amplification based on one or more four-wave mixing (FWM) processes. In one embodiment, an input signal and two pump waves are applied to a highly nonlinear fiber (HNLF). The input signal is amplified in the HNLF due to energy transfer from the pump waves to the input signal via a degenerate phase-conjugation (PC) process. In another embodiment, an input signal and first and second pump waves are applied to a first HNLF to generate, via a Bragg scattering (BS) process, an idler signal corresponding to the input signal. The second pump wave is then filtered out and the first pump wave, a third pump wave, and the input and idler signals are applied to a second HNLF, where they interact via a non-degenerate PC process to produce an amplified output signal.

    摘要翻译： 一种用于通过基于一个或多个四波混频（FWM）处理的相位敏感放大在光纤中直接生成放大光信号的方法和装置。 在一个实施例中，将输入信号和两个泵波施加到高度非线性光纤（HNLF）。 由于通过简并相位共轭（PC）过程从泵浦波到输入信号的能量传递，输入信号在HNLF中被放大。 在另一个实施例中，输入信号和第一和第二泵浦波被施加到第一HNLF，以经由布拉格散射（BS）处理产生对应于输入信号的惰轮信号。 然后滤出第二泵浦波，并将第一泵浦波，第三泵波，以及输入和空载信号施加到第二HNLF，在第二HNLF中，它们通过非简并PC过程相互作用以产生放大的输出信号。

    Two-pump optical parametric devices having reduced stimulated raman scattering noise levels
    9.
    发明申请
    Two-pump optical parametric devices having reduced stimulated raman scattering noise levels 有权
    具有减少的拉曼散射噪声水平的双泵光学参数装置

    公开(公告)号：US20080130097A1

    公开(公告)日：2008-06-05

    申请号：US11172104

    申请日：2005-06-30

    申请人： Colin J. McKinstrie

    发明人： Colin J. McKinstrie

    IPC分类号： G02F1/39 ,  H03F7/00

    CPC分类号： G02F1/395 ,  G02F1/397 ,  H04B10/2537

    摘要： Two-pump optical parametric devices (OPDs), and methods of operating the same, generate desired output signals and idlers having reduced stimulated Raman scattering (SRS) noise levels. When the two-pump OPD is used as a two-pump optical parametric amplifier (OPA), the pumps are polarized perpendicular to each other, and the lower-frequency sideband (signal or idler) is polarized parallel to the lower-frequency pump (perpendicular to the higher-frequency pump). The desired output may be an amplified signal or a generated idler. When the two-pump OPD is used as a two-pump optical frequency converter (OFC), the pumps can be polarized parallel to one another, in which case the signal and idler are both perpendicular to the pumps, or perpendicular to one another, in which case the lower-frequency sideband (signal or idler) is polarized parallel to the lower-frequency pump (perpendicular to the higher-frequency pump).

    摘要翻译： 双泵光参量装置（OPD）及其操作方法产生具有减少的受激拉曼散射（SRS）噪声水平的期望的输出信号和惰轮。 当双泵OPD用作双泵光参量放大器（OPA）时，泵彼此垂直偏振，低频边带（信号或惰轮）被平行于低频泵（ 垂直于高频泵）。 期望的输出可以是放大信号或产生的惰轮。 当双泵OPD用作双泵光频变频器（OFC）时，泵可以彼此平行极化，在这种情况下，信号和惰轮都垂直于泵，或垂直于彼此， 在这种情况下，低频边带（信号或惰轮）被平行于低频泵（垂直于较高频率的泵）极化。