Revolutionizing the design of an evanescent-wave-based fiber-optic fluorometer

Jianjun Ma; Wojtek J. Bock

doi:10.1117/12.783024

16 May 2008 Revolutionizing the design of an evanescent-wave-based fiber-optic fluorometer

Jianjun Ma, Wojtek J. Bock

Proceedings Volume 7004, 19th International Conference on Optical Fibre Sensors; 70040N (2008) https://doi.org/10.1117/12.783024
Event: 19th International Conference on Optical Fibre Sensors, 2008, Perth, WA, Australia

Abstract

A typical evanescent-wave fiber-optic fluorometer (EWFOF) has an excitation (Ex) light source attached at one end, causing a significant level of stray Ex light mixed with a much weaker signal at the detection end. A high-performance filter / detector assembly is hence a common requirement for signal recovery. We have proposed a side-excited EWFOF featuring significant suppression of this stray light level and enhancement of the fluorescent emission signal. In particular, this EWFOF limits its sensing volume within a single droplet approximately the diameter of a fiber core. The paper compares the performance of this fluorometer with that of a conventional EWFOF based on several identical conditions such as fiber type, filter and Ex source power level as well as the detection system.

Citation Download Citation

Jianjun Ma and Wojtek J. Bock "Revolutionizing the design of an evanescent-wave-based fiber-optic fluorometer", Proc. SPIE 7004, 19th International Conference on Optical Fibre Sensors, 70040N (16 May 2008); https://doi.org/10.1117/12.783024

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