Investigate The Relation B/W Refractive Index and BRAGG Wavelength In Fibre BRAGG Grating

Compared with conventional fibre-optic sensors, FBG sensors have a number of distinguishing advantages. FBG sensors prove to be one of the most promising candidates for fibre-optic smart structures. This article presents a comprehensive and systematic overview of FBG sensor technology regarding many aspects including sensing principles, relation between refractive index & Bragg wavelength, grating fabrication techniques, It is anticipated that FBG sensor systems will be commercialized and widely applied in practice in the near future due to the maturity of economical production of FBGs and the availability of cost effective interrogation and multiplexing techniques. In-fibre Bragg grating (FBG) sensors are one of the most exciting developments in the field of optical fibre sensors in recent years.