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Opt Lett. 2005 Apr 01;30(7):717-9. doi: 10.1364/ol.30.000717.

Selective mode excitation in hollow-core photonic crystal fiber.

Optics letters

A D Galea, F Couny, S Coupland, P J Roberts, H Sabert, J C Knight, T A Birks, P St J Russell

Affiliations

  1. Blazephotonics, Ltd., University of Bath Campus, Claverton Down, Bath BA2 7AY, UK.

PMID: 15832916 DOI: 10.1364/ol.30.000717

Abstract

Modes are selectively excited by launching light through the cladding from the side into a hollow-core photonic crystal fiber. Measuring the total output power at the end of the fiber as a function of the angle of incidence of the exciting laser beam provides a powerful diagnostic for characterizing the cladding bandgap. Furthermore, various types of modes on either side of the bandgap are excited individually, and their near-field images are obtained.

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