Towards a Uniform Metrological Assessment of Grating-Based Optical Fiber Sensors: From Refractometers to Biosensors

A metrological assessment of grating-based optical fiber sensors is proposed with the aim of providing an objective evaluation of the performance of this sensor category. Attention was focused on the most common parameters, used to describe the performance of both optical refractometers and biosenso...

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Bibliographic Details
Published in:Biosensors (Basel) 2017-06, Vol.7 (2), p.23
Main Authors: Chiavaioli, Francesco, Gouveia, Carlos A J, Jorge, Pedro A S, Baldini, Francesco
Format: Article
Language:English
Subjects:
Biosensing Techniques - methods
Biosensors
Fiber Optic Technology - methods
Humans
Metrology
Optical Fibers
Optical Phenomena
Parameter uncertainty
Performance assessment
Performance evaluation
Refractometers
Refractometry
Reproducibility
Response time
Review
Selectivity
Sensitivity
Sensors
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Summary:A metrological assessment of grating-based optical fiber sensors is proposed with the aim of providing an objective evaluation of the performance of this sensor category. Attention was focused on the most common parameters, used to describe the performance of both optical refractometers and biosensors, which encompassed sensitivity, with a distinction between volume or bulk sensitivity and surface sensitivity, resolution, response time, limit of detection, specificity (or selectivity), reusability (or regenerability) and some other parameters of generic interest, such as measurement uncertainty, accuracy, precision, stability, drift, repeatability and reproducibility. Clearly, the concepts discussed here can also be applied to any resonance-based sensor, thus providing the basis for an easier and direct performance comparison of a great number of sensors published in the literature up to now. In addition, common mistakes present in the literature made for the evaluation of sensor performance are highlighted, and lastly a uniform performance assessment is discussed and provided. Finally, some design strategies will be proposed to develop a grating-based optical fiber sensing scheme with improved performance.
ISSN:2079-6374
2079-6374
DOI:10.3390/bios7020023