Methods and apparatus for polarization control
    1.
    发明申请
    Methods and apparatus for polarization control 有权
    用于偏振控制的方法和装置

    公开(公告)号:US20050199787A1

    公开(公告)日:2005-09-15

    申请号:US10796930

    申请日:2004-03-10

    CPC分类号: G02F1/0136

    摘要: Methods and apparatus of performing polarization control for optical transmissions are provided. The methods and apparatus enable polarization control devices to achieve a desired output state of polarization regardless of the input state of polarization. The desires state of polarization can be achieved by rotating waveplates in a polarization controller in a sequential fashion. Each waveplate may be continually adjusted or dithered so long as the feedback signal satisfies a feedback condition. Once the feedback signal exceeds the feedback condition, the next waveplate in the polarization controller is adjusted. This enables the methods and apparatus to rapidly adjust the state of polarization away from dead spots and minimize loss control problems.

    摘要翻译: 提供了进行光传输的偏振控制的方法和装置。 该方法和装置使得偏振控制装置能够实现期望的输出极化状态,而与偏振的输入状态无关。 可以通过以顺序方式在偏振控制器中旋转波片来实现偏振的欲望状态。 只要反馈信号满足反馈条件,每个波片可以被连续地调节或抖动。 一旦反馈信号超过反馈条件,调整偏振控制器中的下一个波片。 这使得方法和装置能够将极化状态快速地调整为远离死点并最小化损失控制问题。

    Methods and apparatus for polarization control
    3.
    发明授权
    Methods and apparatus for polarization control 有权
    用于偏振控制的方法和装置

    公开(公告)号:US07154670B2

    公开(公告)日:2006-12-26

    申请号:US10796930

    申请日:2004-03-10

    IPC分类号: G02B27/28

    CPC分类号: G02F1/0136

    摘要: Methods and apparatus of performing polarization control for optical transmissions. The methods and apparatus enable polarization control devices to achieve a desired output state of polarization regardless of the input state of polarization. The desired state of polarization can be achieved by rotating waveplates in a polarization controller in a sequential fashion. Each waveplate may be continually adjusted or dithered so long as the feedback signal satisfies a feedback condition. Once the feedback signal exceeds the feedback condition, the next waveplate in the polarization controller is adjusted. This enables the methods and apparatus to rapidly adjust the state of polarization away from dead spots and minimize loss control problems.

    摘要翻译: 执行光传输的偏振控制的方法和装置。 该方法和装置使得偏振控制装置能够实现期望的输出极化状态,而与偏振的输入状态无关。 可以通过以顺序方式在偏振控制器中旋转波片来实现期望的偏振状态。 只要反馈信号满足反馈条件,每个波片可以被连续地调节或抖动。 一旦反馈信号超过反馈条件,调整偏振控制器中的下一个波片。 这使得方法和装置能够将极化状态快速地调整为远离死点并最小化损失控制问题。

    High Loss Loop Back For Long Repeater Span
    9.
    发明申请
    High Loss Loop Back For Long Repeater Span 有权
    高损耗回路用于长中继器跨度

    公开(公告)号:US20090324249A1

    公开(公告)日:2009-12-31

    申请号:US12146811

    申请日:2008-06-26

    申请人: Hongbin Zhang

    发明人: Hongbin Zhang

    IPC分类号: H04B10/00

    CPC分类号: H04B10/071 H04B10/035

    摘要: Various high loss loop back (HLLB) repeater architectures are disclosed that enable selectively monitoring (e.g., measuring, analyzing, etc) of Rayleigh signals from both inbound and outbound directions of an optical communication system. In one such embodiment, first and second optical test signal frequencies (or ranges) are used, in conjunction with selective filtering, for monitoring the outbound and inbound paths, respectively. The repeater architectures allow optical time domain reflectometry (OTDR) monitoring techniques to be employed, for example, in particularly long repeater spans, such as those in excess of 90 km in length.

    摘要翻译: 公开了各种高损耗环回(HLLB)中继器架构,其能够从光通信系统的入站和出站方向选择性地监视(例如,测量,分析等等)瑞利信号。 在一个这样的实施例中,第一和第二光学测试信号频率(或范围)结合选择性过滤被分别用于监视出站和入站路径。 中继器架构允许采用光时域反射测量(OTDR)监测技术,例如,在特别长的中继器跨度(例如长度超过90km的那些)中。