Optical communication system incorporating automatic dispersion compensation modules
    1.
    发明授权
    Optical communication system incorporating automatic dispersion compensation modules 有权
    包含自动色散补偿模块的光通信系统

    公开(公告)号:US06370300B1

    公开(公告)日:2002-04-09

    申请号:US09252708

    申请日:1999-02-18

    IPC分类号: G02B634

    CPC分类号: H04B10/2519 H04B2210/252

    摘要: In accordance with the invention, an optical communication system is provided with one or more automatic dispersion compensation modules. Each module has an adjustable dispersion element, a data integrity monitor and a feedback network whereby the monitor adjusts the dispersion element to optimize system performance. In a preferred embodiment the dispersion compensating modules comprise chirped fiber Bragg gratings in which the chirp is induced in the grating by passing a current along distributed thin film heaters deposited along the length of the fiber. The magnitude of the applied current determines the dispersion of the grating. A data integrity monitor is configured to sense the integrity of transmitted data and to provide electrical feedback for controlling the current applied to the grating.

    摘要翻译: 根据本发明,光通信系统设置有一个或多个自动色散补偿模块。 每个模块都具有可调色散元件,数据完整性监视器和反馈网络,由此监视器调整色散元件以优化系统性能。 在优选实施例中,色散补偿模块包括啁啾光纤布拉格光栅,其中通过沿沿着光纤长度沉积的分布式薄膜加热器传递电流而在光栅中感应啁啾。 施加电流的大小决定了光栅的色散。 数据完整性监视器被配置为感测传输数据的完整性,并提供用于控制施加到光栅的电流的电反馈。

    Optical fiber communication system incorporating automatic dispersion compensation modules to compensate for temperature induced variations
    2.
    发明授权
    Optical fiber communication system incorporating automatic dispersion compensation modules to compensate for temperature induced variations 有权
    包含自动色散补偿模块的光纤通信系统,以补偿温度变化

    公开(公告)号:US06307988B1

    公开(公告)日:2001-10-23

    申请号:US09362151

    申请日:1999-07-28

    IPC分类号: G02B634

    CPC分类号: H04B10/2519 H04B2210/252

    摘要: A high speed optical communication system (≧10 Gbit/s) is compensated for temperature variation by providing it with one or more automatic dispersion compensation modules. Each module has an adjustable dispersion element, a data integrity monitor and a feedback network whereby the monitor adjusts the dispersion element to compensate for temperature variation. In a preferred embodiment the dispersion compensating modules comprise chirped fiber Bragg gratings in which the chirp is induced in the grating by passing a current along distributed thin film heaters deposited along the length of the fiber. The magnitude of the applied current determines the dispersion of the grating. A data integrity monitor is configured to sense the integrity of transmitted data and to provide electrical feedback for controlling the current applied to the grating.

    摘要翻译: 高速光通信系统(> = 10 Gbit / s)通过提供一个或多个自动色散补偿模块来补偿温度变化。 每个模块具有可调色散元件,数据完整性监视器和反馈网络,由此监视器调节色散元件以补偿温度变化。 在优选实施例中,色散补偿模块包括啁啾光纤布拉格光栅,其中通过沿沿着光纤长度沉积的分布式薄膜加热器传递电流而在光栅中感应啁啾。 施加电流的大小决定了光栅的色散。 数据完整性监视器被配置为感测传输数据的完整性,并提供用于控制施加到光栅的电流的电反馈。

    Optical grating devices with adjustable chirp
    3.
    发明授权
    Optical grating devices with adjustable chirp 有权
    具有可调啁啾的光栅设备

    公开(公告)号:US06275629B1

    公开(公告)日:2001-08-14

    申请号:US09183048

    申请日:1998-10-30

    IPC分类号: G02B634

    摘要: In accordance with the invention, an optical waveguide grating with adjustable chirp comprises a waveguide grating in thermal contact with an electrically controllable heat-transducing body which varies the temperature along the length of the grating. The heat-transducing body can generate heat on the fiber or remove heat from the fiber to establish a temperature gradient along the grating. In an exemplary embodiment, the heat-transducing body is a resistive film coating whose local resistance varies along the length of the grating. Electrical current passed through the film generates a temperature gradient along the grating approximately proportional to the local resistance of the film, and the amount of chirp can be adjusted by the current. The resulting devices are simple, compact and power efficient.

    摘要翻译: 根据本发明,具有可调啁啾线的光波导光栅包括与电可控热传导体热接触的波导光栅,其沿着光栅的长度改变温度。 热传导体可以在纤维上产生热量或从纤维去除热量以沿着光栅建立温度梯度。 在一个示例性实施例中,热传导体是其局部电阻沿光栅的长度变化的电阻膜涂层。 通过膜的电流沿着光栅产生大约与膜的局部电阻成比例的温度梯度,并且可以通过电流调节啁啾的量。 所得到的器件简单,紧凑,功率高。

    High resolution digital optical encoder/decoder
    8.
    发明授权
    High resolution digital optical encoder/decoder 有权
    高分辨率数字光编码器/解码器

    公开(公告)号:US08351789B2

    公开(公告)日:2013-01-08

    申请号:US11781940

    申请日:2007-07-23

    IPC分类号: H04J4/00

    摘要: A programmable encoder is provided that includes at least one optical input for receiving a modulated broadband optical signal and at least one optical output. A dispersion element receives the optical signal from the optical input and spatially separates the optical signal into a plurality of wavelength components. A collimating element is provided for collimating the plurality of wavelength components. An actuatable optical arrangement receives the collimated plurality of wavelength components from the collimating element. The actuatable optical arrangement includes a digital micromirror device (DMD) from which a programmably selected subset of wavelength components are reflected at least twice before being directed to a selected one of optical outputs to thereby encode the CDMA signal.

    摘要翻译: 提供了一种可编程编码器,其包括用于接收调制的宽带光信号和至少一个光输出的至少一个光输入。 色散元件从光输入端接收光信号,并将光信号空间分离成多个波长分量。 提供了用于准直多个波长分量的准直元件。 可致动的光学装置从准直元件接收准直的多个波长分量。 可致动光学装置包括数字微镜装置(DMD),可编程选择的波长分量子集在被指向所选择的一个光输出端之前被反射至少两次,从而对CDMA信号进行编码。

    Tunable optical routing systems
    9.
    发明授权
    Tunable optical routing systems 有权
    可调光路由系统

    公开(公告)号:US07408639B1

    公开(公告)日:2008-08-05

    申请号:US11113957

    申请日:2005-04-25

    IPC分类号: G01J3/28

    摘要: An optical spectral detection device utilizing free space optical beam propagation is provided. The device includes at least one optical fiber input, at least one opto-electronic detection device, an optical element having an actuator with at least one tilt axis, and a diffraction element having a surface thereon. The device also includes an optical beam transfer arrangement positioned between the optical element and the diffraction element such that tilt actuation of the optical element elicits a proportional change in an angle of incidence of the optical beam onto the diffraction element, wherein the center of rotation for the angular change is the surface of the diffraction element. The spectral properties of the optical beam that are detected are selected by selectively positioning the optical element about at least one of the tilt axes.

    摘要翻译: 提供了利用自由空间光束传播的光谱检测装置。 该装置包括至少一个光纤输入,至少一个光电检测装置,具有至少一个倾斜轴的致动器的光学元件以及在其上具有表面的衍射元件。 该装置还包括位于光学元件和衍射元件之间的光束传递装置,使得光学元件的倾斜致动引起光束到衍射元件的入射角的成比例的变化,其中,用于 角度变化是衍射元件的表面。 通过围绕至少一个倾斜轴选择性地定位光学元件来选择检测到的光束的光谱特性。

    Modular all-optical cross-connect
    10.
    发明申请
    Modular all-optical cross-connect 有权
    模块化全光交叉连接

    公开(公告)号:US20080166087A1

    公开(公告)日:2008-07-10

    申请号:US10632670

    申请日:2003-08-01

    IPC分类号: G02B6/35

    摘要: An all-optical, optical cross-connect includes first and second pluralities of multiport optical devices. Each of the first plurality of multiport optical devices have at least one input port for receiving a WDM optical signal and a plurality of output ports for selectively receiving one of more wavelength components of the optical signal. Each of the second plurality of multiport optical devices have a plurality of input ports for selectively receiving one of more wavelength components of the optical signal and at least one output port for selectively receiving one of more wavelength components of the optical signal. At least one of the first or second plurality of multiport optical devices are all-optical switches that can route every wavelength component independently of every other wavelength component. The plurality of input ports of the second plurality of multiport optical devices are optically coupled to respective ones of the plurality of output ports of the first plurality of multiport optical devices.

    摘要翻译: 全光学交叉连接包括第一和第二多个多端口光学器件。 第一多个多端口光学器件中的每一个具有用于接收WDM光信号的至少一个输入端口和用于选择性地接收光信号的更多波长分量之一的多个输出端口。 第二多个多端口光学器件中的每一个具有多个输入端口,用于选择性地接收光信号的多个波长分量中的一个以及至少一个输出端口,用于选择性地接收光信号的多个波长分量之一。 第一或第二多个多端口光学器件中的至少一个是全光开关,其可以独立于每隔一个波长分量路由每个波长分量。 第二多个多端口光学器件的多个输入端口光学耦合到第一多个多端口光学器件的多个输出端口中的相应的输入端口。