Optical time domain reflectometer test method and optical time domain reflectometer
An optical time domain reflectometer and a testing method technology, applied in the field of communication, can solve the problem that the measurement range cannot be adjusted according to the on-site situation, and achieve the effects of solving the fixed measurement range, increasing the optical power, and expanding the measurement range
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[0013] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are the Some, but not all, embodiments are invented. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0014] For the optical time domain reflectometer, a chaotic correlation optical time domain reflectometer (COTDR) has been studied in the prior art. By performing cross-correlation calculations on the reference light and the reflected light at the fault location, the fault with a spatial resolution of 6cm is realized. Positioning improves the test distance and test accu...
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