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63 条记录 (耗时 0.047 秒)

    Monlithic nonplanar ring oscillator and method
    41.
    发明授权
    Monlithic nonplanar ring oscillator and method 失效
    单晶非平面环形振荡器及方法

    公开(公告)号：US5043996A

    公开(公告)日：1991-08-27

    申请号：US332232

    申请日：1989-03-31

    申请人： Alan C. Nilsson ,  Robert L. Byer

    发明人： Alan C. Nilsson ,  Robert L. Byer

    IPC分类号： H01S3/06 ,  H01S3/083

    CPC分类号： H01S3/083 ,  H01S3/0606 ,  H01S3/0604 ,  H01S3/0627

    摘要： A monolithic nonplanar ring oscillator having an optically isotropic solid-state laser body for propagating laser radiation about a nonplanar ring path internal to the laser body is disclosed. The monolithic laser body is configured to produce a 2N reflection nonplanar ring light path, where N is an integer greater than or equal to 2, comprising 2N-1 total internal reflections and one reflection at a coupler in a single round trip. Undirectional traveling wave oscillation of the laser is induced by the geometry of the nonplanar ring path together with the effect of an applied magnetic field and partial polarizer characteristics of the oblique reflection from the coupler. The 6-reflection nonplanar ring oscillator makes possible otpimal unidirectional oscillation (low loss for the oscillating direction of propagation and, simultaneously high loss for the nonoscillating direction of propagation) in monolithic NPROs using materials with index of refraction smaller than the square root of 3, for example, laser glass.

    摘要翻译： 公开了一种具有光学各向同性的固体激光器体的单片非平面环形振荡器，用于在激光体内部的非平面环形路径周围传播激光辐射。 单片激光器体被配置为产生2N反射非平面环形光路，其中N是大于或等于2的整数，其包括2N-1个全内反射，并且在单次往返中在耦合器处产生一次反射。 激光的单向行波振荡由非平面环路的几何形状以及来自耦合器的倾斜反射的施加磁场和部分偏振器特性的影响引起。 6反射非平面环形振荡器可以使用折射率小于3的平方根的材料，使单片NPRO成为可能的otpimal单向振荡（传播振荡方向的低损耗，同时传播的非振荡方向的高损耗） 例如，激光玻璃。

    Controlled depolarization using chirp for mitigation of nonlinear polarization scattering
    42.
    发明授权
    Controlled depolarization using chirp for mitigation of nonlinear polarization scattering 有权
    使用啁啾控制去极化以减轻非线性偏振散射

    公开(公告)号：US09054808B2

    公开(公告)日：2015-06-09

    申请号：US13177250

    申请日：2011-07-06

    申请人： Ilya Lyubomirsky ,  Alan C. Nilsson

    发明人： Ilya Lyubomirsky ,  Alan C. Nilsson

    IPC分类号： H04B10/04 ,  H04J14/06 ,  H04B10/08 ,  H04B10/2507

    CPC分类号： H04B10/2572

    摘要： A coherent optical transmitter circuit is disclosed in which controlled chirp is employed, enabling the suppression of nonlinear polarization scattering in dual polarization coherent systems, such as those which employ dual polarization-quadrature phase-shift keying (DP-QPSK). By separately chirping the modulated signals of each polarization tributary signal, the polarization state of the output DP-QPSK signal varies during a time period corresponding to a symbol bit period. Such controlled variations in the output DP-QPSK signal result in the mitigation of nonlinear effects associated with the network infrastructure over which the signal is transmitted, resulting in enhanced system performance. Enhanced system performance, for example, can be seen in greater reach and improved signal quality of the transmitted signal.

    摘要翻译： 公开了一种相干光发射机电路，其中采用受控的啁啾，使得能够抑制双偏振相干系统中的非线性偏振散射，例如采用双极化 - 正交相移键控（DP-QPSK）的系统。 通过分别调制每个偏振支路信号的调制信号，输出DP-QPSK信号的偏振状态在对应于符号位周期的时间段内变化。 输出DP-QPSK信号中的这种受控的变化导致减轻与发送信号的网络基础设施相关联的非线性效应，导致增强的系统性能。 例如，增强的系统性能可以在更大的范围内被看到，并且改善了发射信号的信号质量。

    CONTROLLED DEPOLARIZATION USING CHIRP FOR MITIGATION OF NONLINEAR POLARIZATION SCATTERING
    43.
    发明申请
    CONTROLLED DEPOLARIZATION USING CHIRP FOR MITIGATION OF NONLINEAR POLARIZATION SCATTERING 有权
    使用CHIRP控制的非线性偏振散射的分解

    公开(公告)号：US20120106980A1

    公开(公告)日：2012-05-03

    申请号：US13177250

    申请日：2011-07-06

    申请人： Ilya Lyubomirsky ,  Alan C. Nilsson

    发明人： Ilya Lyubomirsky ,  Alan C. Nilsson

    IPC分类号： H04B10/04

    CPC分类号： H04B10/2572

    摘要： A coherent optical transmitter circuit is disclosed in which controlled chirp is employed, enabling the suppression of nonlinear polarization scattering in dual polarization coherent systems, such as those which employ dual polarization-quadrature phase-shift keying (DP-QPSK). By separately chirping the modulated signals of each polarization tributary signal, the polarization state of the output DP-QPSK signal varies during a time period corresponding to a symbol bit period. Such controlled variations in the output DP-QPSK signal result in the mitigation of nonlinear effects associated with the network infrastructure over which the signal is transmitted, resulting in enhanced system performance. Enhanced system performance, for example, can be seen in greater reach and improved signal quality of the transmitted signal.

    摘要翻译： 公开了一种相干光发射机电路，其中采用受控的啁啾，使得能够抑制双偏振相干系统中的非线性偏振散射，例如采用双极化 - 正交相移键控（DP-QPSK）的系统。 通过分别调制每个偏振支路信号的调制信号，输出DP-QPSK信号的偏振状态在对应于符号位周期的时间段内变化。 输出DP-QPSK信号中的这种受控的变化导致减轻与发送信号的网络基础设施相关联的非线性效应，导致增强的系统性能。 例如，增强的系统性能可以在更大的范围内被看到，并且改善了发射信号的信号质量。

    OPTICAL AUTODISCOVERY FOR AUTOMATED LOGICAL AND PHYSICAL CONNECTIVITY CHECK BETWEEN OPTICAL MODULES
    45.
    发明申请
    OPTICAL AUTODISCOVERY FOR AUTOMATED LOGICAL AND PHYSICAL CONNECTIVITY CHECK BETWEEN OPTICAL MODULES 有权
    光学自动化自动化逻辑和物理连接检查光模块之间

    公开(公告)号：US20110243552A1

    公开(公告)日：2011-10-06

    申请号：US13017779

    申请日：2011-01-31

    申请人： Matthew L. Mitchell ,  Robert B. Taylor ,  Alan C. Nilsson ,  Steven Joseph Hand ,  Daniel P. Murphy

    发明人： Matthew L. Mitchell ,  Robert B. Taylor ,  Alan C. Nilsson ,  Steven Joseph Hand ,  Daniel P. Murphy

    IPC分类号： H04B10/08

    CPC分类号： H04J14/0227 ,  H04J14/0221 ,  H04J14/0241 ,  H04J14/0258 ,  H04J14/0264 ,  H04J14/0265 ,  H04J14/0275 ,  H04J14/0276

    摘要： Optical autodiscovery is provide between two optical modules to insure that when an optical signal is coupled between the two optical module, the optical signal from a first module does not interfere with operation of a second module. The autodiscovery is implemented by sending an optical identification signal from the first optical module via the coupling to the second optical module from which signal, the second optical module can verify and determined acceptance of the coupled first optical module. During this autodiscovery process, the optical identification signal from the first optical module may be attenuated or shifted in optical spectrum so as not to interfere with the operation of the second optical module. Autodiscovery may also be employed in cases where a first optical module is to receive an optical signal from a second module.

    摘要翻译： 在两个光学模块之间提供光学自动发现，以确保当光信号耦合在两个光学模块之间时，来自第一模块的光信号不会干扰第二模块的操作。 通过从第一光学模块经由耦合向第二光学模块发送光学识别信号来实现自动发现，第二光学模块可从该第二光学模块验证和确定耦合的第一光学模块的接受。 在该自动发现处理中，来自第一光模块的光学识别信号可以在光谱中被衰减或移位，从而不会干扰第二光模块的操作。 在第一光模块将从第二模块接收光信号的情况下也可以采用自动发现。

    Optical communications system with wavelength division multiplexing
    50.
    发明授权
    Optical communications system with wavelength division multiplexing 失效
    具有波分复用的光通信系统

    公开(公告)号：US5940196A

    公开(公告)日：1999-08-17

    申请号：US858067

    申请日：1997-05-16

    申请人： David Piehler ,  Xingyu Zou ,  Alan C. Nilsson ,  Chien-Yu Kuo

    发明人： David Piehler ,  Xingyu Zou ,  Alan C. Nilsson ,  Chien-Yu Kuo

    IPC分类号： H04J14/02

    CPC分类号： H04J14/02 ,  H04B10/50 ,  H04J14/0298

    摘要： A wavelength division multiplexer (WDM) in an optical fiber transmission system launches analog signals, for instance a multi-channel television signal. The WDM enhances signal quality by transmitting along a single fiber two different optical wavelength signals, each carrying identical RF information. This results in a 3 dB improvement in carrier to noise ratio. The WDM combines two or more wavelengths centered around for instance 1550 nm or 1310 nm. A typical difference between the two wavelengths is 3 nm. In other embodiments, more than two wavelengths are used. The receiver is for instance a single photosensitive element. The phase of the two RF signals is adjusted in the optical or RF domain to be the same upon arrival at the receiver. In other embodiments, the receiver includes two photosensitive elements, each receiving from a receiver end WDM a single wavelength. In this case, the phase adjustment may be applied at the receiver in the optical or RF domain.

    摘要翻译： 光纤传输系统中的波分多路复用器（WDM）发射模拟信号，例如多声道电视信号。 WDM通过沿着单个光纤传输两个不同的光波长信号来提高信号质量，每个光波长信号携带相同的RF信息。 这导致载波噪声比提高了3 dB。 WDM组合了两个或多个以1550nm或1310nm为中心的波长。 两个波长之间的典型差异是3nm。 在其他实施例中，使用两个以上的波长。 接收器例如是单个感光元件。 在到达接收机时，两个RF信号的相位在光或RF域中被调整为相同。 在其他实施例中，接收机包括两个光敏元件，每个光敏元件从接收器端WDM接收单个波长。 在这种情况下，相位调整可以应用在光或RF域中的接收器处。