PERFORMANCE MONITORING METHOD OF AN OPTICAL SIGNAL FOR COLLECTING ALL THE INFORMATION ABOUT THE SIZE AND PHASE OF THE OPTICAL SIGNAL, ANALYZING NOISE DISTRIBUTION, AND MONITORING A BIT ERROR RATE

摘要

PURPOSE: A performance monitoring method of an optical signal is provided to monitor the performance of the optical signal regardless of a modulation mode. ;CONSTITUTION: Using coherent mixing, information about the size and phase of an optical signal is received. The received information is collected with an asynchronous delay tap sampling technology. The received information is analyzed. The distribution of the size noise and phase noise of the optical signal is measured. The coherent mixing is performed by optical hybrid or a free space device. An RF power distributer, a RF delay line, or an ADC(Analog to Digital Converter) is used for the asynchronous delay tap sampling technology.;COPYRIGHT KIPO 2011