Method for the detection of Brillouin distributed fibre optical and dynamic detection system of Brillouin distributed and dynamic optical fibers

摘要

Method for the detection of Brillouin distributed fibre optical and dynamic detection system of Brillouin distributed and dynamic in optical fibers, a method for detecting Brillouin distributed and dynamic in optical fibers is provided here.The method comprises the following steps: deriving a characteristic average of an optical fiber along its length; generating a signal probe of variable frequency, such that the variable frequency is modeled to match, at specified points along the fiber.The respective average characteristics; injecting the signal probe frequency variable in a first end of the optical fiber, and a pulse signal piru00f3dico in a second end of optical fiber, and the fuel injection is synchronized such that stimulated Brillouin scattering is Executed in each of the specified points along the optical fiber.Such a difference in frequency between the signal of the probe and the signal of pump combines with the characteristic of average fiber; and measuring the occurrences of stimulated Brillouin scattering to produce data indicative of pressure and temperature at all points along the optical fiber.