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The relation between the phase shift and the mean optical power(MOP) output from a delay-line interferometer (DLI) port applied for phase-shift keying(PSK) signal demodulation is proven of a cosine law irrelevant to signal modulation condition.The variation amplitude of the MOP is proportional to the transition duration of the modulation pulses.This phenomenon is interpreted as the result of the statistical and waveform characteristics of the PSK.The conclusions verified by simulation and experiment are generalized to other modulation formats and then applied to phase detuning monitoring,delay time judgment of DLI,and independence of modulation data assessment. 相似文献
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光子交换是信息电子学中的一项高技术课题。在高速实时的光交换系统中有时分、空分和频分主三种交换方式。它将应用于光纤通信的宽带局域网及综合业务数字网中。 相似文献
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