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发射器和接收器相同步的双向数字光纤系统见图1所示。发送和接收信号的同步可通过调整系统的毕特速率及线长度来完成。在系统的一端,如终端,接收到的数据再生时间周期τ的延迟关系为
The bidirectional digital optical fiber system that transmitter and receiver are synchronized with is shown in Fig.1. Sending and receiving signals can be synchronized by adjusting the system’s bit rate and line length to complete. At one end of the system, such as a terminal, the delay relationship of the received data reproduction time period τ is