Chromatic Dispersion Analyzer (CD) Module EXFO FTB-5800
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The ongoing race to develop high-speed transmission systems and increasing bandwidth are facing certain limitations. Chromatic dispersion (CD) measurements are becoming increasingly necessary for transport networks and service providers looking to upgrade their systems to 10 or 40 Gb/s (OC-192/STM-64 and OC-768/STM-256). EXFO's FTB-5800 CD analyzer has excellent specifications and is designed for field use, making it suitable for all CD measurements.
The HD phenomenon occurs because the wavelengths propagate through the fiber at slightly different speeds, resulting in an overextended and therefore inefficient pulse. Too high a CD value results in cross modulation and signal loss, but small, controlled CD values are needed to eliminate unwanted non-linear effects such as four-wave mixing.
The FTB-5800 module uses an approved phase-shifting method, which works as follows: to transmit a signal, modulated radiation is injected into the fiber. At the other end of the fiber, different wavelengths have different phase shifts. The measurement of these various phase delays in the frequency domain refers to the delays in the time domain and therefore to the HD.
The EXFO FTB5800 Chromatic Dispersion Analyzer Module is compatible with EXFO FTB-500.
Simple adjustment of test parameters avoids errors
Large graphic display for both dispersion and relative group delay
EXFO FTB-5800 Chromatic Dispersion Analyzer Module Specifications
1 year. It is possible to extend the warranty period up to 3 years.
Description of the EXFO FTB-5800 Chromatic Dispersion Analyzer Module (12 pages; 3.4 MB)