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24 条记录 (耗时 0.019 秒)

    Power and wavelength management for mixed-rate optical data systems
    21.
    发明授权
    Power and wavelength management for mixed-rate optical data systems 失效
    混合光学数据系统的功率和波长管理

    公开(公告)号：US06694099B2

    公开(公告)日：2004-02-17

    申请号：US10382706

    申请日：2003-03-06

    申请人： Andrew Roman Chraplyvy ,  Kenneth Lee Walker

    发明人： Andrew Roman Chraplyvy ,  Kenneth Lee Walker

    IPC分类号： H04J1402

    CPC分类号： H04J14/0221

    摘要： An optical transmission system exploits the reduced signal-to-noise (SNR) requirements for low-bit rate channels to devise a new wavelength channel allocation scheme which increases the number of channels that a WDM system can support. Wavelengths of low-bit rate channels are assigned outside a flat-gain window (i.e., flat-passband region) of the system. The channel allocation scheme uses the high-bit rate channels located in the flat-passband region of wavelengths and the lower-bit rate channels located outside this passband region with progressively lower-bit rate channels located farther outside this passband region. Low-bit rate channels are also assigned to region(s) of the passband where the non-linear threshold power level of the system may be exceeded.

    摘要翻译： 光传输系统利用低比特率信道的降低的信噪比（SNR）要求来设计一种增加WDM系统可以支持的信道数量的新的波长信道分配方案。 低比特率信道的波长被分配在系统的平坦增益窗口（即，平坦通带区域）之外。 信道分配方案使用位于波长的平坦通带区域中的高比特率信道和位于该通带区域外部的低位比特率信道，其中位于该通带区域之外的逐渐降低的比特率信道。 低比特率信道也被分配给可能超过系统的非线性阈值功率电平的通带的区域。

    Optical communication system incorporating automatic dispersion compensation modules
    22.
    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

    申请人： Benjamin John Eggleton ,  Torben N. Nielsen ,  John A. Rogers ,  Thomas Andrew Strasser ,  Kenneth Lee Walker

    发明人： Benjamin John Eggleton ,  Torben N. Nielsen ,  John A. Rogers ,  Thomas Andrew Strasser ,  Kenneth Lee Walker

    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。