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Updated: Jun 28, 2026
09:03
A Silicon-tipped Fiber-optic Sensing Platform with High Resolution and Fast Response
Published on: January 7, 2019
Solid-state instrumentation for use with optical-fibre chemical-sensors
A J Guthrie1, R Narayanaswamy, N A Welti
1Department of Instrumentation and Analytical Science, UMIST, P.O. Box 88, Manchester, England.
Talanta
|February 1, 1988
Summary
A new solid-state instrument for optical-fibre pH-sensors was developed using LED sources and a photodiode detector. This innovation offers a reliable method for pH measurement, comparable to conventional techniques.
Area of Science:
- Analytical Chemistry
- Instrumentation Science
Background:
- Optical-fibre pH-sensors offer advantages for remote and in-situ measurements.
- Conventional instrumentation for optical-fibre pH-sensors can be complex and bulky.
Purpose of the Study:
- To develop a compact, solid-state instrument for optical-fibre pH-sensors.
- To describe the optical and electronic principles of the new instrument.
- To evaluate the performance of the developed instrument.
Main Methods:
- Development of a solid-state instrument incorporating light-emitting diode (LED) sources and a photodiode detector.
- Integration of an internal reference within the instrument.
- Characterization of the optical and electronic principles.
- Comparative analysis of sensor and instrument responses against conventional methods.
Main Results:
- Successful development of a functional solid-state instrument for optical-fibre pH-sensing.
- Demonstration of the instrument's optical and electronic principles.
- Validation of the sensor and instrument responses, showing comparability with conventional instrumentation.
Conclusions:
- The developed solid-state instrument provides a viable and potentially more portable alternative for optical-fibre pH-sensing.
- The instrument's design and performance are well-characterized and suitable for comparison with existing technologies.
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