FDMLFourier domain mode locked SENSING SYSTEM BASED ON FOURIER DOMAIN MODE LOCKED TUNABLE LASER

摘要

A sensing system according to an exemplary embodiment of the present invention includes a light source unit that emits a laser based on a tunable laser of a Fourier domain mode locked (FDML) scheme, a light source unit that receives a part of the laser emitted from the light source unit and performs scattering due to shaking of a minute refractive index A back scattering optical fiber for generating a scattering inducing optical fiber and a laser for backward scattering of the laser beam from the optical fiber for scattering induction and for receiving the laser directly from the light source to superpose the two lasers and generating an interference signal And a sensing unit.;