Photonic crystal fiber with a hybrid honeycomb cladding

Mortensen, N. A.; Nielsen, M. D.; Folkenberg, J. R.; Jakobsen, C.; Simonsen, H. R.

Photonic crystal fiber with a hybrid honeycomb cladding

Authors

Description

We consider an air-silica honeycomb lattice and demonstrate a new approach to the formation of a core defect. Typically, a high or low-index core is formed by adding a high-index region or an additional air-hole (or other low-index material) to the lattice, but here we discuss how a core defect can be formed by manipulating the cladding region rather than the core region itself. Germanium-doping of the honeycomb lattice has recently been suggested for the formation of a photonic band-gap guiding silica-core and here we experimentally demonstrate how an index-guiding silica-core can be formed by fluorine-doping of the honeycomb lattice.
5 pages including 3 figures. Accepted for Optics Express