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    Optical add/drop multiplexer with reconfigurable add wavelength selective switch
    1.
    发明授权
    Optical add/drop multiplexer with reconfigurable add wavelength selective switch 有权
    具有可重新配置的波长选择开关的光分插复用器

    公开(公告)号：US07634196B2

    公开(公告)日：2009-12-15

    申请号：US10959366

    申请日：2004-10-06

    申请人： Ornan Gerstel ,  Stefano Piciaccia ,  Mauro Macchi ,  Mauro Rudi Casanova ,  Ronald Johnson

    发明人： Ornan Gerstel ,  Stefano Piciaccia ,  Mauro Macchi ,  Mauro Rudi Casanova ,  Ronald Johnson

    IPC分类号： H04J14/02

    CPC分类号： H04Q11/0005 ,  H04J14/0204 ,  H04J14/0205 ,  H04J14/0212 ,  H04J14/0213 ,  H04J14/0219 ,  H04J14/0221 ,  H04Q2011/0075

    摘要： A reconfigurable WDM add/drop multiplexer and its method of operation at an add/drop node on an optical fiber carrying a plurality of WDM signals is described. The WDM add/drop multiplexer has a coupler and a demultiplexer element dropping WDM signals from the optical fiber to a plurality of drop terminals, and a wavelength-selective switch adding WDM signals from a plurality of add terminals onto the optical fiber. The coupler splits the WDM signals received from the optical fiber and passes the split WDM signals to the first and second output terminals. The demultiplexer element separates the split WDM signals at the plurality of drop terminals. The wavelength-selective switch, which has an input terminal for connection to the second coupler output terminal and an output terminal for connection to the optical fiber, selectively adds WDM signals on the plurality of add terminals to the optical fiber responsive to control signals.

    摘要翻译： 描述了可重配置的WDM分插复用器及其在携带多个WDM信号的光纤上的加/减节点上的操作方法。 WDM分插复用器具有耦合器和解复用器元件，其将来自光纤的WDM信号丢弃到多个液滴端子，以及波长选择开关，将来自多个添加端子的WDM信号添加到光纤上。 耦合器分离从光纤接收的WDM信号，并将分离的WDM信号传送到第一和第二输出端。 解复用器元件分离多个分接端子处的分离WDM信号。 具有用于连接到第二耦合器输出端子的输入端子和用于连接到光纤的输出端子的波长选择开关响应于控制信号选择性地将多个添加端子上的WDM信号添加到光纤。

    Measurement of optical fiber length and determination of chromatic dispersion over the optical fiber
    10.
    发明授权
    Measurement of optical fiber length and determination of chromatic dispersion over the optical fiber 有权
    光纤长度的测量和光纤色散的测定

    公开(公告)号：US07808623B2

    公开(公告)日：2010-10-05

    申请号：US11872656

    申请日：2007-10-15

    申请人： Stefano Piciaccia ,  Fabrizio Forghieri ,  Ornan Gerstel ,  Gabriele Maria Galimberti

    发明人： Stefano Piciaccia ,  Fabrizio Forghieri ,  Ornan Gerstel ,  Gabriele Maria Galimberti

    IPC分类号： G01N21/00

    CPC分类号： G01B11/02 ,  G01M11/338 ,  G01M11/39

    摘要： In one embodiment, first optical signal can be generated at a first end of an optical fiber segment at a first time. The first optical signal can be detected at a second end of the optical fiber segment at a second time. A second optical signal can be generated at a second end of the optical fiber segment at a third time in response to the detection of the first optical signal. The second optical signal can be detected at the first end of the optical fiber segment at a fourth time. A length of the optical fiber segment can be determined based on a difference between the second time and the first time, a difference between the third time and the second time, and a difference between the fourth time and the third time.

    摘要翻译： 在一个实施例中，第一光信号可以在第一时间在光纤段的第一端产生。 可以在第二时间在光纤段的第二端检测第一光信号。 响应于第一光信号的检测，可以在第三时间在光纤段的第二端产生第二光信号。 可以在第四时间在光纤段的第一端检测第二光信号。 可以基于第二时间和第一时间之间的差异，第三时间和第二时间之间的差异以及第四时间和第三时间之间的差异来确定光纤段的长度。