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    • 1. 发明授权
    • Method and system for span optical power control
    • 跨度光功率控制方法与系统
    • US07046429B2
    • 2006-05-16
    • US10461332
    • 2003-06-16
    • Ilan HaleviTsvi SivanMordechay TubyDavid Harris
    • Ilan HaleviTsvi SivanMordechay TubyDavid Harris
    • H04B10/12
    • H04B10/2931H04J14/0201H04J14/0206H04J14/0221
    • There is proposed a method and a module for real time control of power per optical channel in a multi-channel optical communication line formed by a group of optical elements connected in a chain by fiber spans. The group of elements comprises one or more optical fiber amplifiers (OFA); each of the spans is characterized by its span loss, while each of the OFA is characterized by its gain and its designed output power per channel. The method comprises steps of calculating an expected total input power value (EIP) for a particular optical amplifier (OFA) in the line, measuring a real total input power (MIP) at the particular optical amplifier, and comparing the values. If a difference between the EIP and the MIP at the OFA exceeds a predetermined value, the method (and the module) ensures adjusting the gain of the OFA to maintain its output power per channel constant.
    • 提出了一种用于在通过光纤跨连接在链中的一组光学元件形成的多通道光通信线路中实现每个光信道功率的实时控制的方法和模块。 该组元件包括一个或多个光纤放大器(OFA); 每个跨度的特征在于其跨度损耗,而每个OFA的特征在于其增益和其每个通道的设计输出功率。 该方法包括以下步骤:计算线中特定光放大器(OFA)的预期总输入功率值(EIP),测量特定光放大器处的实际总输入功率(MIP),并比较该值。 如果OFA上的EIP和MIP之间的差异超过预定值,则该方法(和模块)确保调整OFA的增益以保持每个通道的输出功率恒定。