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在光纖通信的系統(tǒng)中，光纖中，傳輸?shù)氖嵌M(jìn)制光脈沖“0”碼和“1”碼，它由二進(jìn)制數(shù)字信號(hào)對(duì)光源進(jìn)行通斷調(diào)制而產(chǎn)生。而數(shù)字信號(hào)是對(duì)連續(xù)變化的模擬信號(hào)進(jìn)行抽樣、量化和編碼產(chǎn)生的，稱(chēng)為PCM(pulsecodemodulation)，即脈沖編碼調(diào)制。PCM編碼原理與規(guī)則：PCM數(shù)字接口是G.7…
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