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The interference method is to introduce a measure of the average polarization mode dispersion in single-mode optical fiber and optical cable. The test principle is as follows: When the fiber end of the broadband light source lighting 更多：https://www.bmcx.com/ , the autocorrelation function of the measurement of electromagnetic fields in the output cross-correlation function in order to determine the pmd. Interferogram with a corresponding light autocorrelation center coherent peak in the autocorrelation interference instrument. The measured values ​​represent the average in the wavelength range of measurement. Different instruments in the 1310nm or 1550nm window has a certain wavelength range.

Interference measurement method is the introduction of a single-mode optical fiber and method of mean polarization mode dispersion of optical fiber cable. Principle of the test is: When optical fiber broadband light source at one end, and the autocorrelation function of electromagnetic field measurement on the output side or cross-correlation function 更多：https://www.bmcx.com/ , to determine the PMD. In auto-correlation-type interference meter, a corresponding optical interferogram has derived from the center of coherent peak. Measurement value represents the average measurement wavelength range. 1310nm or 1550nm window are different instruments have a certain range of wavelengths.

Interfering method is to introduce a single-mode optical fiber and cable measuring the average polarization mode dispersion method. The test principle is: when fiber end with broadband lighting, at the output of the measured electromagnetic field autocorrelation function or close to each other 更多：https://www.bmcx.com/ , so as to determine PMD. In the related type of interference instrument,Interference patterns have a corresponding light from the center of the related coherent peak. Measurement value represents the measured wavelength range of average. In the 1310 nm 1550 or nm window different instruments have certain wavelength range.

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