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Published on: March 13, 2013
Theoretical Analysis of the Refractometric Sensitivity of a Coated Whispering Gallery Mode Resonator for Gas Sensing
Davor Ristić1, Daniil Zhivotkov1,2, Snigdha Thekke Thalakkal1
1Ruđer Bošković Institute, Bijenička Cesta 54, 10000 Zagreb, Croatia.
Abstract:
We present a theoretical analysis of the refractometric sensitivity of a spherical microresonator coated with a porous sensing layer performed for different whispering gallery modes. The effective refractive index of the modes is also calculated. The calculations are also made for a system which has an additional high-refractive index layer sandwiched between the microsphere and the porous sensing layer. The results of the calculation are discussed in regards to the applicability of the studied systems for gas sensor construction.

