A Numerical Analysis of Various pH Level for Fiber Optic pH Sensor Based on Bromophenol Blue in Silica

  • Maizatul Zolkapli Universiti Teknologi MARA
  • Suhairi Saharudin MIMOS Berhad
  • Sukreen Hana Herman Universiti Teknologi MARA
  • Wan Fazlida Hanim Abdullah Universiti Teknologi MARA

Abstract

The fabrication and characterization of an optical fiber pH sensor for the detection range 2 – 7 are described. The sensing element was prepared by coating the uncladded middle portion of a multimode plastic clad silica fiber (PCF) with xerogel film of immobilized bromophenol blue (BPB) prepared by a sol-gel process. The exponential decay of the evanescent wave at the core-cladding interface of the multimode fiber was utilized to determine the pH response.  The objective of this work is to analyze the measurement of the fiber optic sensing probe towards various pH level. The intensity of the absorbance was analyzed using statistical technique (Statistical Package for the Social Sciences, SPSS) to identify the significant pH range that can be used as a reference in developing the sensor instrumentation in the future. pH2 shows the highest significance among all pH values based on the statistical results using error plots.

Author Biographies

Maizatul Zolkapli, Universiti Teknologi MARA

Faculty of Electrical Engineering

Universiti Teknologi MARA

40450 Shah Alam 

Selangor

Suhairi Saharudin, MIMOS Berhad
Department of Photonics, MIMOS Berhad, 57000 Technology Park Malaysia, Kuala Lumpur, Malaysia
Sukreen Hana Herman, Universiti Teknologi MARA

Faculty of Electrical Engineering

Universiti Teknologi MARA

40450 Shah Alam 

Selangor

Wan Fazlida Hanim Abdullah, Universiti Teknologi MARA

Faculty of Electrical Engineering

Universiti Teknologi MARA

40450 Shah Alam 

Selangor

Published
2019-06-24
How to Cite
ZOLKAPLI, Maizatul et al. A Numerical Analysis of Various pH Level for Fiber Optic pH Sensor Based on Bromophenol Blue in Silica. International Journal of Electrical & Electronic Systems Research (IEESR), [S.l.], v. 9, n. 1, p. 18-23, june 2019. ISSN 1985-5389. Available at: <http://myjms.mohe.gov.my/index.php/IEESR/article/view/1280>. Date accessed: 18 aug. 2019. doi: https://doi.org/10.24191/ieesr.v9i1.1280.