Fast protection switching by snooping on downstream signals in an optical network
作者： Yong-Kwan Park , Peter Van Eijk , Kyeong-Soo Kim , Woojune Kim , Piet Van Heyningen
DOI:
关键词: Propagation delay 、 Line (electrical engineering) 、 Electrical engineering 、 Optical burst switching 、 Fiber optic splitter 、 Downstream (networking) 、 Engineering 、 Optical fiber
摘要: An optical network has an splitter connected to (1) a working subscriber unit (OSU) of circuit, (2) protection OSU and (3) one or more terminals (ONTs), where ONT (i) line termination (LT) the circuit via fiber (ii) LT fiber. The present invention enables fast switching from circuit. arrival times corresponding downstream cells are measured at both units ONT, information related is transmitted OSU. A propagation delay value generated based on for use by communications with if when implemented upon detection failure in
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