Associated optical time domain reflectometer based on all-fiber wide-spectrum chaotic light source

The invention discloses an associated optical time domain reflectometer based on all-fiber wide-spectrum chaotic light source, relating to the field of a chaotic fiber laser and an optical time domain reflectometer. The reflectometer comprises an all-fiber chaotic light source and an associated optical time domain reflection system; the associated optical time domain reflection system comprises an adjustable attenuator, an optical filter, a coupler, a circulator, photoelectric detectors and an oscilloscope; the emergent light of the all-fiber chaotic light source shoots into the associated optical time domain reflection system and then sequentially passes through the adjustable attenuator, the optical filter and the coupler; chaotic light signals passing through the coupler are divided into reference signals and detection signals; the reference signals are directly converted into electrical signals by the photoelectric detector, and acquired and stored by the oscilloscope; the detection signals pass through the circulator to realize the function of the reflectometer; and reflected signals are converted into electrical signals by the other photoelectric detector and then are acquired and stored by the same oscilloscope. The associated optical time domain reflectometer based on the all-fiber wide-spectrum chaotic light source is simple in systemic structure, high in stability and capable of realizing high resolution and long distance of sensing at the same time.