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    • 9. 发明申请
    • High Loss Loop Back For Long Repeater Span
    • 高损耗回路用于长中继器跨度
    • US20090324249A1
    • 2009-12-31
    • US12146811
    • 2008-06-26
    • Hongbin Zhang
    • Hongbin Zhang
    • H04B10/00
    • H04B10/071H04B10/035
    • 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.
    • 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。