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(上接第12期)7 系统性能指标对于模拟光纤传输系统,主要采用信噪比表示系统性能,对于数字光纤传输系统,则采用误码率和抖动表示系统性能。(1)误码率误码率是衡量数字光纤传输系统在正常工作状态下传输性能优劣的一个重要指标,它反映了数字信息在传输过程中受到损害的程度,基本
(Continued on the 12th) 7 System Performance Indicators For analog optical fiber transmission system, the main signal to noise ratio that the system performance, for digital optical transmission system, the use of bit error rate and jitter that system performance. (1) Bit error rate Bit error rate is a measure of digital fiber transmission system in normal working conditions, the merits of an important indicator of transmission performance, which reflects the digital information in the transmission process to the extent damaged, the basic