MMI Structures Covered by Bromocresol Purple for Ammonia Detection

• Authors: A. Szewczuk , M. Błahut
• Languages of publication: EN

Abstracts

EN

In the paper examinations of a lightguide sensor on the base of gradient index multimode interference structures are presented. Investigated structures were fabricated in potassium-sodium ion exchange process. Multimode interference sensor was designed for ammonia detection. Bromocresol purple covering the multimode section was used as a sensing layer. Numerical calculations were performed with the use of modal analysis and beam propagation method to optimise sensor geometry and sensing layer thickness. Experimental results show the possibility of ammonia detection from the concentration of tens ppm.

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

• Journal: Acta Physica Polonica A
• Year: 2013
• Volume: 124
• Issue: 3
• Pages: 570-573

Dates

published

2013-09

Contributors

author

A. Szewczuk

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

author

M. Błahut

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

References

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Identifiers

DOI

10.12693/APhysPolA.124.570