Manufacturing and Optimization of Sol-gel-based TiO2-SiO2 thin Films as High Refractive Index Overlays for Long Period Grating-based Biosensing. - Palas Biswas; Francesco Chiavaioli; Sunirmal Jana; Somnath Bandyopadhyay; Nandini Basumallick; Ambra Giannetti; Sara Tombelli; Susanta Bera; Aparajita Mallick; Francesco Baldini; Cosimo Trono (PHOTOPTICS, 2016)