Investigation of the fluorescent efficiency improvement of a novel designed fiber probe for zinc detection

Zhong Pan; Min Li

doi:10.1117/12.870120

9 November 2010 Investigation of the fluorescent efficiency improvement of a novel designed fiber probe for zinc detection

Zhong Pan, Min Li

Author Affiliations +

Proceedings Volume 7853, Advanced Sensor Systems and Applications IV; 78532N (2010) https://doi.org/10.1117/12.870120
Event: Photonics Asia 2010, 2010, Beijing, China

Abstract

A number of applications of fiber optic sensor for bioluminescence have been widely reported. The key component in fiber optic fluorescent sensing system is sensor probe, whose efficiency will determine the overall sensor performance, and haven't been thoroughly understood in previous studies. Questions about how the probe structural parameters such as length, diameters and N.A. of its fiber components affect the collecting efficiency of the fluorescence signals. In this paper, we present a pinpoint fiber-glass probe aiming at efficient fluorescence collection. According to the geometric optics approach, we model a sensor probe based on the same principle of coupling ratio analysis between a light source and a fiber, and demonstrate the quantitative relations of the fluorescent collecting efficiency and the structural parameters of the probe by simulation and experiment. Our theoretical analysis comes up with a optimal probe geometry which has the highest fluorescent efficiency of the designed fiber optic sensor probe, and reveal detailed relations that the efficiency is direct proportion to the core diameter, NA of receiving fiber, the length and the section radius of the sensing probe, where the ratio of the core diameter to sectional area of the probe is the key factors for the fluorescent efficiency for certain detection accuracy.

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Zhong Pan and Min Li "Investigation of the fluorescent efficiency improvement of a novel designed fiber probe for zinc detection", Proc. SPIE 7853, Advanced Sensor Systems and Applications IV, 78532N (9 November 2010); https://doi.org/10.1117/12.870120

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KEYWORDS

Luminescence

Sensors

Fiber optics sensors

Zinc

Light sources

Fiber optics

Light

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