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    Wavelength division multiplexed systems with optical performance monitors
    11.
    发明申请
    Wavelength division multiplexed systems with optical performance monitors 有权
    具有光学性能监视器的波分复用系统

    公开(公告)号：US20100129071A1

    公开(公告)日：2010-05-27

    申请号：US12313584

    申请日：2008-11-21

    Applicant: Christopher Lin

    Inventor： Christopher Lin

    IPC: H04B10/08

    CPC classification number: H04B10/0795 ,  H04J14/0227

    Abstract: The specification describes optical performance monitors which are simplified by coupling single tunable optical filters to multiple channels being monitored. Optical measurements for more than one channel may be made simultaneously. The optical system architecture is preferably an optical performance monitor for a WDM system. In a system designed according to the invention n channels may be monitored using n photodetectors, n optical splitters, but only n/2 tunable optical filters. Additional system simplification may be obtained using optical switching elements coupled to the optical splitters.

    Abstract translation: 该规范描述了通过将单个可调谐光学滤波器耦合到被监视的多个通道来简化的光学性能监视器。 可以同时进行多个通道的光学测量。 光学系统架构优选地是用于WDM系统的光学性能监视器。 在根据本发明设计的系统中，可以使用n个光电检测器，n个分光器，但是仅n / 2个可调谐光学滤波器来监测n个通道。 可以使用耦合到光分路器的光开关元件来获得附加的系统简化。

    System and Method for Self-Generation of Reference Signals
    12.
    发明申请
    System and Method for Self-Generation of Reference Signals 审中-公开
    参考信号自发的系统和方法

    公开(公告)号：US20090269058A1

    公开(公告)日：2009-10-29

    申请号：US12111051

    申请日：2008-04-28

    Applicant: Mark Summa ,  Martin Williams ,  Christopher Lin

    Inventor： Mark Summa ,  Martin Williams ,  Christopher Lin

    IPC: H04B10/08

    CPC classification number: H04B10/0795

    Abstract: One embodiment of the present invention sets forth a technique for determining properties of optical links using the amplified spontaneous emission (ASE) of integrated amplifiers. To calibrate the system, existing amplifiers in the nodes of the system can be operated in an ASE mode. A bypass switch at the mid-stage of each amplifier routes the ASE from the amplifier's first stage into one or more signal processing components, creating reference signals. Subsequently, the bypass switch routes the reference signals back into the mid-stage of the amplifier. After propagating through a link to the next node in the system, the optical parameters of the reference signals are measured and used to determine properties of the link, such as chromatic dispersion and attenuation. Tunable devices within the two nodes connected by the link may be set to compensate for specific properties of the link, thereby improving the quality of transmitted signals.

    Abstract translation: 本发明的一个实施例提出了一种使用放大的放大自发发射（ASE）来确定光链路性质的技术。 要校准系统，系统节点中的现有放大器可以在ASE模式下运行。 每个放大器中段的旁路开关将ASE从放大器的第一级传送到一个或多个信号处理组件，创建参考信号。 随后，旁路开关将参考信号路由到放大器的中间阶段。 在通过链路传播到系统中的下一个节点之后，测量参考信号的光学参数并用于确定链路的属性，例如色散和衰减。 可以设置通过链路连接的两个节点内的可调谐设备来补偿链路的特定属性，从而提高发送信号的质量。

    Analyzing tunable optical filters using tunable source
    13.
    发明申请
    Analyzing tunable optical filters using tunable source 有权
    使用可调谐源分析可调光滤波器

    公开(公告)号：US20090141266A1

    公开(公告)日：2009-06-04

    申请号：US11998213

    申请日：2007-11-29

    Applicant: Christopher Lin ,  Deepak Devicharan

    Inventor： Christopher Lin ,  Deepak Devicharan

    IPC: G01N21/00

    CPC classification number: G01J3/26 ,  G01J3/28 ,  G01J2003/2866 ,  G01M11/00 ,  G02F2203/055

    Abstract: The specification describes an optical wavelength monitor/analyzer that uses a cost effective wavelength reference source. The wavelength reference source is a nominally fixed wavelength laser with inherent tunability over a very limited wavelength range, i.e. a few nanometers. Tuning is effected by changing the temperature of the laser. The limited range is useful for making multiple wavelength measurements in the context of analyzing wavelength drift in tunable optical filters.

    Abstract translation: 该规范描述了使用成本有效的波长参考源的光学波长监视器/分析仪。 波长参考源是名义上固定的波长激光器，其在非常有限的波长范围内具有固有的可调谐性，即几纳米。 通过改变激光的温度来实现调谐。 有限的范围对于在可调谐光学滤波器中分析波长漂移的上下文中进行多个波长测量是有用的。

    OPTICAL DEVICE WITH CASCADED STEERING DEVICES
    14.
    发明申请
    OPTICAL DEVICE WITH CASCADED STEERING DEVICES 审中-公开
    带有转向装置的光学装置

    公开(公告)号：US20080219663A1

    公开(公告)日：2008-09-11

    申请号：US12014736

    申请日：2008-01-15

    Applicant: Haijun Yuan ,  Xuehua Wu ,  Christopher Lin ,  Giovanni Barbarossa

    Inventor： Haijun Yuan ,  Xuehua Wu ,  Christopher Lin ,  Giovanni Barbarossa

    IPC: H04J14/02

    CPC classification number: G02F1/31 ,  G02B6/2931 ,  G02B6/3512 ,  G02B6/3546 ,  G02B6/356 ,  G02F2001/311

    Abstract: An optical switching device for wavelength divisional multiplexed signals uses cascaded arrays of optical steering devices for 1×N routing of WDM optical signals, where N=4, 8, 16, etc. Two cascaded arrays provide 1×4 switching; three cascaded arrays provide 1×8 switching; and so on. Each array is configured with independently controlled optical steering devices so that each wavelength channel of the WDM signal may be routed to any of N output ports. The optical steering devices may be micro-mirrors, liquid crystal-based polarization modulators, or a combination of both. By incorporating cascaded optical steering devices into a single WDM switching device, cost effective 1×N switching of WDM optical signals may be realized.

    Abstract translation: 用于波分复用信号的光学开关装置使用光学转向装置的级联阵列，用于WDM光信号的1xN路由，其中​​N = 4,8,16等。两个级联阵列提供1x4切换; 三个级联阵列提供1x8切换; 等等。 每个阵列配置有独立控制的光学转向装置，使得WDM信号的每个波长信道可以路由到N个输出端口中的任一个。 光学转向装置可以是微反射镜，基于液晶的偏振调制器或两者的组合。 通过将级联光学转向装置并入到单个WDM开关装置中，可实现成本有效的1xDM切换WDM光信号。

    HIGH EXTINCTION RATIO LIQUID CRYSTAL OPTICAL SWITCH
    15.
    发明申请
    HIGH EXTINCTION RATIO LIQUID CRYSTAL OPTICAL SWITCH 有权
    高放电比例液晶光学开关

    公开(公告)号：US20080218680A1

    公开(公告)日：2008-09-11

    申请号：US12014730

    申请日：2008-01-15

    Applicant: Haijun Yuan ,  Xuehua Wu ,  Christopher Lin ,  Giovanni Barbarossa

    Inventor： Haijun Yuan ,  Xuehua Wu ,  Christopher Lin ,  Giovanni Barbarossa

    IPC: G02F1/13 ,  H04J14/00

    CPC classification number: G02F1/1313 ,  G02B5/3083 ,  G02B6/35 ,  G02B27/283 ,  G02F1/1326 ,  G02F1/133528 ,  G02F1/13363 ,  G02F1/31

    Abstract: An optical switch for performing high extinction ratio switching of an optical signal includes a beam polarizing element and one or more optical elements. The optical elements are configured to direct an optical signal along a first or second optical path based on the polarization state of the optical signal as it passes through the optical elements. The optical switch performs high extinction ratio switching of the optical signal by preventing unwanted optical energy from entering an output port by using an absorptive or reflective optical element or by directing the unwanted optical energy along a different optical path.

    Abstract translation: 用于执行光信号的高消光比切换的光开关包括光束偏振元件和一个或多个光学元件。 光学元件被配置为当光信号通过光学元件时，基于光信号的偏振状态沿着第一或第二光路引导光信号。 光开关通过使用吸收或反射光学元件防止不想要的光能进入输出端口或通过沿着不同的光路引导不想要的光能来执行光信号的高消光比切换。

    Optical amplifiers using switched filter devices
    19.
    发明授权
    Optical amplifiers using switched filter devices 失效
    使用开关滤波器的光放大器

    公开(公告)号：US08294981B2

    公开(公告)日：2012-10-23

    申请号：US12584919

    申请日：2009-09-15

    Applicant: Christopher Lin ,  Ming Cai ,  Martin Williams

    Inventor： Christopher Lin ,  Ming Cai ,  Martin Williams

    IPC: H04B10/17 ,  H04B10/12

    CPC classification number: H01S3/06754 ,  G02B26/023 ,  H01S3/10023 ,  H01S3/1608 ,  H04B10/2941

    Abstract: Described are Gain Flattening Filters (GFFs) implemented using mechanical translating assemblies to move selected thin film Gain Attenuating Filters (GAFs), and combinations of selected GAFs, into or out of the output path from an optical amplifier. The GAFs may be used singly, or in combinations that synthesize many target filter characteristics. The GFF is primarily adapted for WDM systems operating with a wavelength range of approximately 1520 nm to 1620 nm. Several embodiments are shown for effectively combining different GAFs to provide multiple GFF curves.

    Abstract translation: 描述的是使用机械平移组件实现的增益扁平滤波器（GFF），其将所选择的薄膜增益衰减滤波器（GAF）以及所选择的GAF的组合移动到光放大器的输出路径中或外。 GAF可以单独使用，也可以合成许多目标滤光片特性。 GFF主要适用于波长范围约为1520 nm至1620 nm的WDM系统。 示出了几个实施例用于有效地组合不同的GAF以提供多个GFF曲线。

    Liquid crystal optical switch configured to reduce polarization dependent loss
    20.
    发明授权
    Liquid crystal optical switch configured to reduce polarization dependent loss 有权
    液晶光开关配置为减少偏振相关损耗

    公开(公告)号：US08064036B2

    公开(公告)日：2011-11-22

    申请号：US12433769

    申请日：2009-04-30

    Applicant: Xuefeng Yue ,  Christopher Lin ,  Ruipeng Sun ,  Ruibo Wang

    Inventor： Xuefeng Yue ,  Christopher Lin ,  Ruipeng Sun ,  Ruibo Wang

    IPC: G02B6/35 ,  G02F1/13

    CPC classification number: G02F1/31 ,  G02B6/3524 ,  G02F1/1396 ,  G02F2203/06 ,  G02F2203/58

    Abstract: An optical device has the structure to perform switching and attenuation of an optical beam with reduced polarization dependent loss (PDL). The optical device includes a birefringent displacer and two liquid crystal (LC) structures. The first LC structure is used to condition s-polarized components of the optical beam and the second LC structure is used to condition p-polarized components of the optical beam. Each LC structure has a separate control electrode so that the s-polarized components of the optical beam and the p-polarized components of the optical beam can be conditioned differently and in such a manner that reduces PDL. The optical device may be configured for processing multiple input light beams, such as the multiple wavelength channels de-multiplexed from a wavelength division multiplexed (WDM) optical signal.

    Abstract translation: 光学器件具有以减小的偏振相关损耗（PDL）来执行光束的切换和衰减的结构。 光学器件包括双折射置换器和两个液晶（LC）结构。 第一个LC结构用于调节光束的s极化分量，第二个LC结构用于调节光束的p偏振分量。 每个LC结构具有单独的控制电极，使得光束的s偏振分量和光束的p偏振分量可以被不同地调节并且以减少PDL的方式进行调节。 光学装置可以被配置为处理多个输入光束，例如从波分复用（WDM）光信号解复用的多个波长信道。

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