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The FTB-5700 is the only single-ended combined CD and PMD analyzer on the market, eliminating the need for a remote light source at the far end of the fiber. This market-exclusive feature allows one technician to test both chromatic dispersion and polarization mode dispersion from a single location, dramatically reducing truck rolls and operational expenses.
The FTB-5700 Single-Ended Dispersion Analyzer is compatible with three EXFO platforms: the FTB-2 or FTB-2 Pro, the FTB-4 Pro, and the FTB-500. This flexibility allows users to integrate dispersion testing into their existing EXFO test infrastructure without purchasing entirely new equipment.
Mobile backhaul network spans can range from a few kilometers up to 120 km, and dispersion increases with distance. With data rates now frequently reaching 10 Gbit/s in mobile backhaul deployments, both chromatic dispersion and PMD can significantly degrade signal quality, making thorough testing essential after construction or prior to network upgrades.
The FTB-5700 can test fiber lengths up to 120 km. The fiber under test must be terminated with a UPC connector at the remote end, must not have a filter at 1550 nm, and the minimum fiber length for PMD measurement is 100 m or greater.
According to EXFO's case study data, single-ended testing with the FTB-5700 requires only one technician and results in up to 68% fewer truck rolls compared to traditional end-to-end testing that demands two technicians. For example, a scenario requiring 19 truck rolls with dual-ended testing was completed with just 6 truck rolls using the FTB-5700.
The FTB-5700 measures chromatic dispersion over a wavelength range of 1475 nm to 1626 nm, while PMD is characterized at 1550 nm. The single-ended measurement technique requires a strong reflective event at the end of the link, such as a UPC connector, mirror connector, or cleaved fiber end, and the fiber under test must not have a filter at 1550 nm.
No. Because the FTB-5700 is a single-ended instrument that relies on reflected light returning from the far end of the fiber, it cannot measure through components that permit light to travel in only one direction. Optical amplifiers, circulators, and similar unidirectional components will block the return signal required for measurement.
The FTB-5700 supports G.652 NDSF with 3-term Sellmeier fit, G.653 DSF with quadratic fit, G.655 NZDSF with quadratic fit, G.656 Wideband NZDSF with quadratic fit, and a Custom type with default cubic fit. All fiber types operate over a wavelength range of 1475 nm to 1626 nm, and the CD and PMD fiber type selections are linked so that choosing one adjusts the available options for the other.