Modelling Backscattered Light in Fibre Optic Based on Light Propagation

Nowadays, fibre optic sensors have been widely used to detect temperature, pressure, vibration and other physical properties. To design high performance optics sensors, sensing elements such as light propagation need be investigated for parameters absorbance, transmittance scattering. In this study, the backscattered is studied modelled using MATLAB based on Brillouin Rayleigh The scattering effects output power Stokes are clearly seen where both powers reduce with increase of length. in terms Coherent Noise broader source linewidth, higher spatial resolution lower group velocity produce less noise. fluctuation due noise can attributed temporal fluctuations optical pump or current. from research benefit experimental studies future.