Methods for Calibrating High-Resolution Optical Reflectometers Operating in the Frequency Domain

摘要： The operating principle of an optical high-resolution re?ectometer running in the frequency domain (OFDR re?ectometer) is examined. A mathematical model for measuring the parameters of ?ber-optic systems using an OFDR re?ectometer is presented. The accuracy characteristics of OFDR re?ectometers are analyzed and the instrument accuracy is estimated quantitatively. Methods for calibrating OFDR re?ectometers based on a distance scale are proposed and equipment for these methods is discussed.