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The Exfo FTB-5523 PMD Analyzer module uses a Michelson interferometer to accurately measure PMD delay. It performs a mean measurement over the entire wavelength range of a broad-spectrum polarized LED source. After fitting the Gaussian distribution curve, the analysis software calculates and displays the fiber’s total PMD and second-order PMD value and coefficient. Averaging PMD over the entire source wavelength range (without filtering) preserves full power for PMD measurement. The standard 40 dB dynamic range remains available for testing long fiber spans. A high dynamic range option, using EXFO’s M-2100 Broadband Light Source, a high-power EELED source, increases the dynamic range to more than 50 dB to measure fiber spans longer than 250 km. Particularly important in multichannel transmission, second-order PMD is derived from the measured PMD value. Exfo’s software provides second-order PMD delay and coefficient values for telecom fibers. These values allow you to characterize fibers and cables more precisely than simple PMD and better control the transmission quality of high-speed systems. Specifications. Wavelength: 1310/1550 nm. Analysis Measurement range is 0.1 to 115 ps with a calculated value lower than 0.1 ps and estimated value higher than 115 ps: standard 0.05 to 35 ps, extended range option 0.05 to 200 ps. Dynamic range: 32 dB (40 dB with the M-2100 Broadband Light Source.). Average measuring time: 15 s.
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