论文信息 - Effect of numerical aperture on signal level in cylindrical waveguide evanescent fluorosensors.

Effect of numerical aperture on signal level in cylindrical waveguide evanescent fluorosensors.

The effect of numerical aperture on signal level from fluorescent substances or solutions in the evanescent zone of a cylindrical waveguide is analyzed. The analysis applies to the case in which the fluorescence is excited by the evanescent wave of a fiber and the fluorescence signal is that which tunnels back into the same fiber. The analysis is for two cases: bulk fluorescence and fluorescence of a thin film layer. Experimental results are also presented.

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