An overview of fiber-optic sensors

Abstract

Fiber-optic sensor technology has experienced tremendous growth since its early beginnings in the 1970s with early laboratory demonstrations of fiber-optic gyros and acoustic sensors and the introduction of the first commercial intensity and spectrally based sensors. These early efforts were followed by a tremendous growth of interest in the 1980s when the number of workers in the field increased from perhaps a few hundred to thousands. The result was the introduction in the 1990s of the first mass produced fiber-optic sensors that are being used to support navigation and medical applications. The number of fiber-optic sensors products can be expected to grow tremendously in the years to come as rapid progress continues to be made in the related optoelectronic and communication fields. This paper provides an overview of some of the technologies being used to support fiber-optic sensor development and how they are being applied.

Opto-Chemical and Opto-Immuno Sensors

“…This decay is determined either by timeresolved measurement of the fluorescence intensity or by phase fluorimetry. This type of optode has a wide range of applications (Table 1-1) and has been reviewed [40,326,427,444].…”

“…They are based on the evanescent field theory [19,427]. Within the region of the decay of the evanescent field,…”

“…An array allows one to bring the same sample into contact with a set of (differently pretreated) surfaces [427]. This is essential in multi-analyte analysis [396].…”

Sensitivity enhancement of metal clad planar waveguide sensor using metamaterial layer as a guiding layer

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Recent progress of white light interferometric fiberoptic strain sensing techniques

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