Direct characterization of planar waveguide modes by Fourier plane fluorescence leakage radiation microscopy

Details Direct characterization of planar waveguide modes by Fourier plane fluorescence leakage radiation microscopy Direct characterization of planar waveguide modes by Fourier plane fluorescence leakage radiation microscopy

2011-09-21

arxiv.org/abs/1109.4512v1

Physics

Optics

Scientific paper

In this letter, the leakage radiation microscopy (LRM) is extended into characterization of planar waveguide modes (WMs) rather than surface plasmon polaritons (SPPs) taking advantages of the coupling between WMs and fluorescence emission. Propagation constants of different WMs allowed in the same planar waveguide can be simultaneously and rapidly derived from the Fourier plane image of fluorescence based LRM. Numerical simulations are also carried out to calculate propagation constants of these modes, which are consistent with experimental results. Our experiments provide a simple but high efficient method to characterize planar waveguides.

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