Sensing Properties of Four-Layered Planar Waveguides - Theoretical Analysis

• Authors: C. Tyszkiewicz
• Languages of publication: EN

Abstracts

EN

Optical waveguides are the fundamental components of chemical and biochemical evanescent wave sensors. Presented work focuses on the theoretical investigations of homogeneous sensitivity of four-layered composite planar waveguide composed of a silica-titania film and a titania film deposited on a glassy substrate in order of citing. Characteristics of a homogeneous sensitivity and a fundamental modes homogeneous sensitivity difference of such a structure are compared with the ones for a three-layered waveguide composed of silica-titania waveguiding film. Therefore the influence of a high refractive index titania film on homogeneous sensitivity characteristics of three-layered structure is given. It was shown that homogeneous sensitivity difference of fundamental modes of four-layered waveguide can be optimized with respect to thicknesses of each layer. For each value of a cover refractive index there exists the minimal thickness of the titania layer which maximizes the homogeneous sensitivity difference of fundamental modes.

Keywords

EN

42.79.Gn; 07.07.Df

Discipline

• 42.79.Gn: Optical waveguides and couplers(for fiber waveguides and waveguides in integrated optics, see 42.81.Qb and 42.82.Et, respectively)
• 07.07.Df: Sensors (chemical, optical, electrical, movement, gas, etc.); remote sensing

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2012
• Volume: 122
• Issue: 5
• Pages: 908-914

Dates

published

2012-11

Contributors

author

C. Tyszkiewicz

• Department of Optoelectronics, Silesian University of Technology, Akademicka 2, 44-100 Gliwice, Poland

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Identifiers

DOI

10.12693/APhysPolA.122.908