Development of thermostable FBG optical sensor for oil and gas applications

Important progress has been made towards the expanding of the limits of applicability of Fiber Bragg Grating optical sensors. The development of new thermostable coatings has opened up the possibility towards the use of this technology under extreme conditions, i.e. at high temperatures and pressures. The developed sensors have been tested for adsorption of a range of gaseous analytes and exhibit a sensitivity towards linear alkanes. Preliminary tests at high temperature in liquid phase indicate a high thermal stability.