Sol-gel derived optical waveguide films: technological platform for development of planar evanescent wave sensors

Paweł Karasiński

doi:10.1117/12.2222519

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17 December 2015 Sol-gel derived optical waveguide films: technological platform for development of planar evanescent wave sensors

Paweł Karasiński

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Proceedings Volume 9816, Optical Fibers and Their Applications 2015; 98160D (2015) https://doi.org/10.1117/12.2222519
Event: 16th Conference on Optical Fibers and Their Applications, 2015, Lublin and Naleczow, Poland

Abstract

Plane evanescent wave sensors are being developed for over thirty years. However, their full development is somehow limited by the lack of relatively cheap and stable waveguide layers of high refractive index, low optical losses and at the same time resistance to the impact of chemical substances. The paper involves waveguide layers SiO₂:TiO₂ of high refractive index (∼1.81) satisfying these criteria, fabricated via sol-gel method and dip-coating technique. The parameters of the waveguide layers SiO₂:TiO₂ were determined using elipsometric and spectrophotometric methods. The presented waveguide layers have excellent optical properties and are suitable for the application in the planar evanescent wave sensors technology. For the best waveguide SiO₂:TiO₂ layers, the obtained level of optical loss was below 0.2 dB/cm.

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Paweł Karasiński "Sol-gel derived optical waveguide films: technological platform for development of planar evanescent wave sensors", Proc. SPIE 9816, Optical Fibers and Their Applications 2015, 98160D (17 December 2015); https://doi.org/10.1117/12.2222519

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