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Multiple beam interference in a quadrupolar glass fiber

Martina Hentschel·Matthias Vojta
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Abstract

Motivated by the recent observation of periodic filter characteristics of an oval-shaped micro-cavity, we study the possible interference of multiple beams in the far field of a laser-illuminated quadrupolar glass fiber. From numerical ray-tracing simulations of the experimental situation we obtain the interference-relevant length-difference spectrum and compare it with data extracted from the experimental filter results. Our analysis reveals that different polygonal cavity modes being refractively output-coupled in the high-curvature region of the fiber contribute to the observed far-field interference.

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Martina Hentschel, Matthias Vojta. 2001-06-20. Multiple beam interference in a quadrupolar glass fiber. https://doi.org/10.1364/ol.26.001764

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