Sensing system based on fourier domain mode locked tunable laser

One embodiment of a sensing system according to is due to, based on the wavelength tunable laser of FDML (Fourier domain mode locked) manner, by receiving a portion of the emitted laser light source, the light source unit for emitting a laser shaking of the fine refractive index dispersion (reilrayi signal to accommodate reilrayi backscattered laser from scattering induced for optical fibers and optical fiber for inducing the scattering that generates the back-scattered (Rayleigh Backscttering)), and superimposes the two laser by receiving the laser directly from the light source to generate an interference signal detection may include a.