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    • 44. 发明授权
    • Efficient low power optical source driver and method and optical systems and devices using same
    • 高效的低功耗光源驱动器和方法以及使用其的光学系统和器件
    • US07065303B1
    • 2006-06-20
    • US10079710
    • 2002-02-20
    • Samuel Kerem
    • Samuel Kerem
    • H04B10/04
    • H01S5/042H01S5/0427
    • Systems, apparatuses, and methods for driving an optical source with a current source. The optical source driver has a primary control loop having a DC—DC converter and an operational amplifier, wherein the DC—DC converter has a power input, a power output connected to the input of the optical source, and a control input, and wherein the operational amplifier has a first input connected between the optical source and the current source, a second input, and an output connected to the control input of the DC—DC converter, for controlling the output of the DC—DC converter in response to a control signal at the second input. In addition, the optical source drive includes an override control loop having a power input, a power output connected to an input of the optical source, a switch between the power input and the power output, and a comparator having a first input connected between the optical source and the current source, having a second input, and having an output connected to a control input of the switch, for selectively connecting the power input to the power output when a signal between the optical source and the current source falls below a predetermined point.
    • 用于驱动具有电流源的光源的系统,装置和方法。 光源驱动器具有主控制回路,其具有DC-DC转换器和运算放大器,其中DC-DC转换器具有电源输入,连接到光源的输入端的功率输出和控制输入,并且其中 所述运算放大器具有连接在所述光源和所述电流源之间的第一输入端,第二输入端和连接到所述DC-DC转换器的控制输入端的输出端,用于响应于所述DC-DC转换器的输出而控制所述DC-DC转换器的输出 控制信号在第二输入。 另外,光源驱动器包括一个覆盖控制回路,其具有电源输入,连接到光源的输入的功率输出,电源输入和功率输出之间的开关,以及比较器,其具有连接在第一输入端 光源和电流源,具有第二输入,并且具有连接到开关的控制输入的输出,用于当光源和电流源之间的信号低于预定值时选择性地将功率输入连接到功率输出 点。
    • 47. 发明授权
    • Optical transmission systems and optical receivers and receiving methods for use therein
    • 光传输系统和光接收机及其中使用的接收方法
    • US06954590B2
    • 2005-10-11
    • US10811703
    • 2004-03-29
    • Pramode KandpalAlistair J. PriceDavid F. Smith
    • Pramode KandpalAlistair J. PriceDavid F. Smith
    • H04B10/152H04B10/158H04B10/08H04B10/06H04J14/00
    • H04B10/675
    • An optical transmission system including at least one optical transmitter configured to transmit at least one signal wavelength and a tuning wavelength, an optical receiver including an optical filter having a filter bandwidth including the at least one signal wavelength and a percentage of the tuning wavelength and an optical to electrical signal converter configured to receive the at least one signal wavelength from said filter, a first tuning optical to electrical converter configured to receive a first portion of the tuning wavelength stopped by said filter, a second tuning optical to electrical converter configured to receive a second portion of the tuning wavelength passed by said filter, and a filter controller configured to tune the filter bandwidth based on the relative proportion of first and second portions of the tuning wavelength provided to the first and second tuning optical to electrical converters.
    • 一种光传输系统,包括至少一个光发射机,被配置为传输至少一个信号波长和调谐波长;光接收器,包括具有包括所述至少一个信号波长和所述调谐波长百分比的滤波器带宽的滤光器,以及 被配置为从所述滤波器接收所述至少一个信号波长的光电对电信号转换器,被配置为接收由所述滤波器停止的所述调谐波长的第一部分的第一调谐光电转换器,被配置为接收的第二调谐光电转换器 由所述滤波器通过的调谐波长的第二部分,以及滤波器控制器,被配置为基于提供给第一和第二调谐光学到电转换器的调谐波长的第一和第二部分的相对比例来调整滤波器带宽。
    • 48. 发明授权
    • Optical systems including add drop devices and methods
    • 光学系统包括添加设备和方法
    • US06934473B2
    • 2005-08-23
    • US10384978
    • 2003-03-10
    • Thomas D. Stephens
    • Thomas D. Stephens
    • H04J14/02
    • H04J14/0204H04J14/0205H04J14/0206H04J14/021H04J14/0213
    • Optical systems of the present invention include an add/drop device and/or cross-connect device, which is reconfigurable to add and drop signal wavelengths between one or more transmission paths. The add/drop device includes a first selective element configurable to pass a first group of signal wavelengths including at least a first signal wavelength from an input path to a first add/drop path and pass continuing signal wavelengths differing from the first group of signal wavelength to a second add/drop path. A second selective element is provided that is configurable to pass a second group of signal wavelengths including at least a second signal wavelength from said first add/drop path and continuing signal wavelengths differing from the second group of wavelengths from said second add/drop path to an output path. The second selective element is further configured to pass the second group of signal wavelengths from said second add/drop path and wavelengths differing from the second wavelength from said first add/drop path to a drop path. The add/drop device may also include an add path to introduce add signal wavelengths directly to the output path or via at least one of the first and second selective elements.
    • 本发明的光学系统包括可以可配置以在一个或多个传输路径之间增加和丢弃信号波长的分插装置和/或交叉连接装置。 所述分插装置包括第一选择元件,其可配置为将包括至少第一信号波长的第一组信号波长从输入路径传递到第一加/减路径,并且传递与第一组信号波长不同的持续信号波长 到第二个添加/删除路径。 提供了第二选择元件,其可配置为将来自所述第一加/减路径的第二组信号波长包括至少第二信号波长,以及不同于第二组波长的连续信号波长从所述第二加/减路径传递到 输出路径。 第二选择元件还被配置为将来自所述第二加/减路径的第二组信号波长和不同于第二波长的波长从所述第一加/减路径传递到下降路径。 添加/分出设备还可以包括添加路径,以将附加信号波长直接引导到输出路径或经由第一和第二选择元素中的至少一个。