NDLI: Optical fibre probes in the measurement of scattered light: Application for sensing turbidity

Content Provider	Springer Nature Link
Author	SHENOY, M R
Copyright Year	2014
Abstract	Optical fibre probes or optrodes often form the heart of multimode fibre-based measurements and sensors. An optrode usually comprises a bundle of multimode fibres, out of which one or more fibres are used for irradiating the sample, and the remaining fibres are used to collect the light reflected/scattered/fluoresced from the sample containing the measurand(s). The so-collected light carries the characteristic signature of the measurand. Here we present our work on the design and realization of optrodes for the measurement of scattered light from liquid samples. Optical properties of a solution are usually characterized by the parameters absorption coefficient μ $_{ a }$, scattering coefficient μ $_{ s }$, and anisotropy factor g. We have developed a simple method to determine μ $_{ a }$, μ $_{ s }$, and g, of a turbid medium, and a Monte–Carlo model was used to simulate the light scattering from the turbid medium. As an application, we describe the development of a turbidity sensor that has been designed and realized by employing an optrode in conjunction with a concave mirror. The estimation of turbidity is done on the basis of total interaction, by considering scattering and absorption of light from the sample solution. Details of the experiments and results are presented here.
Starting Page	39
Ending Page	48
Page Count	10
File Format	PDF
ISSN	03044289
Journal	Pramana
Volume Number	82
Issue Number	1
e-ISSN	09737111
Language	English
Publisher	Springer India
Publisher Date	2014-01-08
Publisher Place	India
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Fibre optic sensors optical fibre probes turbidity sensor optical properties Physics Astronomy, Observations and Techniques Astrophysics and Astroparticles
Content Type	Text
Resource Type	Article
Subject	Physics and Astronomy

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