A recursive scheme for fiber optic telemetry in frequency division multiplexed and / or division wavelength to an optical sensing system

摘要

A recursive scheme for fiber optic telemetry in frequency division multiplexed and / or division wavelength to an optical sensing system. The present invention relates to a fiber optic sensor system is described, which includes a first sensor fiber and a first reference fiber, coupled to a tip side of a first optical coupling.A first reflector selective wavelength is coupled to another end of each of the first sensor fiber and in accordance with the first reference fiber. A second fiber sensor is coupled at one end to one side of a second optical coupling.The other side of the second optical coupling is coupled to an opposite side of a Dfos first wavelength selective reflectors coupled on one side to the first sensor fiber and the first reference fiber.The system also includes a second reflector selective wavelength coupled to the other end of each in accordance with the second fiber sensor, and in accordance with the second reference fiber.The second wavelength selective reflectors are operational at a wavelength different from a wavelength selective reflectors of the first operational wavelength.