Chromatic dispersion measurement

A chromatic dispersion measurement system for characterizing an optical fiber link under test, the system comprising:

• an OTDR acquisition device connectable toward a proximal end of the optical fiber link for performing at least one OTDR acquisition toward the optical fiber link,
• wherein each OTDR acquisition is performed by propagating in the optical fiber link under test, at least one test signal comprising a plurality of light pulses in accordance with a known sequence of pulses and detecting corresponding return light signal from the optical fiber link so as to obtain a trace representing backscattered and reflected light as a function of distance in the optical fiber link;
• wherein plurality of test signals having mutually different wavelengths is obtained by one of:
• a) performing a set of OTDR acquisitions for a corresponding set of mutually different wavelengths, and b) each OTDR acquisition is performed by propagating in the optical fiber link under test, a plurality of test signals, in sequence;
• and
• a processing unit receiving the trace and configured for:
• for each test signal and corresponding wavelength, extracting from the return light signal, a position of the reflective peak associated with a remote end of the optical fiber link by calculating a cross-correlation between the known sequence of pulses and the acquired trace;
• and
• calculating a value of a chromatic dispersion coefficient associated with said optical fiber link from values of the extracted positions and corresponding wavelengths.