A Simple Fluorescence based Optical Fiber sensor for Fluoride ions

Venkataraj, Roopa; Nampoori, V. P. N.; Radhakrishnan, P.; Kailasnath, M.

doi:10.1364/photonics.2014.m4a.15

Cited by 2 publications

(1 citation statement)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As discussed in previous sections, tapered fibers can provide evanescent wave excitation of fluorescence as well as effectively couple it back into the core and hence the light is guided through the optical fiber [24]. An initial attempt of collecting fluorescence using a system of two tapered fibers like that of probe 2b was carried out by our group and reported in previous literature [36]. The fibers used were of higher diameter as compared to the ones used in the present work, and seemed to give a good response towards the detection of fluoride ion.…”

Section: Methodsmentioning

confidence: 99%

Chemically Tapered Multimode Optical Fiber Probe for Fluoride Detection Based on Fluorescence Quenching of Curcumin

et al. 2015

Self Cite

View full text Add to dashboard Cite

The present work reports a simple fluorescence based tapered fiber optic probe for fluoride ion having a detection range of 2.08 × 10 -6 -2.005×10 -4 M. The performance of the tapered probe is evaluated with respect to probes that consist of combinations of bare un-cladded multimode optical fibers. The effect of fluorescence quenching of a natural dye Curcumin in the presence of fluoride ion is used in the implementation of the probes. The probe effectively uses multiple mechanisms for the excitation and collection of fluorescence from the medium enabling higher sensitivity compared to conventional spectrophotometry especially at very low concentrations of fluoride.

show abstract

Section: Methodsmentioning

confidence: 99%