Mode areas and field energy distribution in honeycomb photonic bandgap fibers

Details Mode areas and field energy distribution in honeycomb photonic bandgap fibers Mode areas and field energy distribution in honeycomb photonic bandgap fibers

2003-07-16

arxiv.org/abs/physics/0307078v1

J. Opt. Soc. Am. B. 20, 2037 (2003).

Physics

Optics

Accepted for J. Opt. Soc. Am. B

Scientific paper

10.1364/JOSAB.20.002037

The field energy distributions and effective mode areas of silica-based photonic bandgap fibers with a honeycomb airhole structure in the cladding and an extra airhole defining the core are investigated. We present a generalization of the common effective area definition, suitable for the problem at hand, and compare the results for the photonic bandgap fibers with those of index-guiding microstructured fibers. While the majority of the field energy in the honeycomb photonic bandgap fibers is found to reside in the silica, a substantial fraction (up to ~30%) can be located in the airholes. This property may show such fibers particularly interesting for sensor applications, especially those based on nonlinear effects or interaction with other structures (e.g. Bragg gratings) in the glass.

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