DEVICE AND METHOD FOR MEASURING THE DISTRIBUTION OF PHYSICAL QUANTITIES IN AN OPTICAL FIBRE

摘要

The invention refers to a device and method for measurement of the distribution of physical magnitudes in an optical fiber, said device comprising and optical source (1) configured for generating a pulsed pump optical signal (A) and a probe optical signal (B) which comprises at least two spectral components separated in optical frequency; a photoreceiver (7) configured to detect the output optical signal (D) as a result of the generation of an RF signal (E), resulting from the beat between the spectral components contained in said output optical signal (D) exiting from the fiber (5); and a demodulator (8) configured to demodulate the RF electrical signal (E) exiting from the receiver (7).