Design and fabrication of a chitosan based integrated optical device for humidity sensing

Alexander Mironenko; Alexander A. Sergeev; Svetlana Bratskaya; Alexander Nepomnyashiy; Valentin Avramenko; Sergey Voznesenskiy

doi:10.1117/12.894341

9 September 2011 Design and fabrication of a chitosan based integrated optical device for humidity sensing

Alexander Mironenko, Alexander A. Sergeev, Svetlana Bratskaya, Alexander Nepomnyashiy, Valentin Avramenko, Sergey Voznesenskiy

Author Affiliations +

Proceedings Volume 8093, Metamaterials: Fundamentals and Applications IV; 809320 (2011) https://doi.org/10.1117/12.894341
Event: SPIE NanoScience + Engineering, 2011, San Diego, California, United States

Abstract

Here we report on preparation of planar optical waveguides based on chitosan (DD=80.5%, MW=500kDa) in different salt forms, chitosan/gold nanoparticles, chitosan/gold nanoparticles/silica hybrids with layered structure and modification of Na/K ion-exchange waveguides with thin chitosan/carrageenan multilayers. Chitosan-based optical waveguides with thickness of 0.5- 1.5 μm were obtained on quartz, glass and MgF₂ substrates by spin-coating and dip-coating. For investigation of optical properties, light (wavelength 632 or 532 nm) was coupled into the planar waveguide via the flint glass prism using goniometer. A number of modes, effective refractive index, waveguide propagation losses were determined for all samples in the range of relative humidity 10-99%.

Citation Download Citation

Alexander Mironenko, Alexander A. Sergeev, Svetlana Bratskaya, Alexander Nepomnyashiy, Valentin Avramenko, and Sergey Voznesenskiy "Design and fabrication of a chitosan based integrated optical device for humidity sensing", Proc. SPIE 8093, Metamaterials: Fundamentals and Applications IV, 809320 (9 September 2011); https://doi.org/10.1117/12.894341

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