52 citations · 208 across the 6 of their papers we have counts for
6 papers
Chromatic dispersion of liquid crystal infiltrated capillary tubes and photonic crystal fibers
Per Dalgaard Rasmussen, Jesper Laegsgaard, Ole Bang
We consider chromatic dispersion of capillary tubes and photonic crystal fibers infiltrated with liquid crystals. A perturbative scheme for inclusion of material dispersion of both…
Tuning quadratic nonlinear photonic crystal fibers for zero group-velocity mismatch
Morten Bache, Hanne Nielsen, Jesper Lægsgaard +1
We consider an index-guiding silica photonic crystal fiber with a triangular air-hole structure and a poled quadratic nonlinearity. By tuning the pitch and the relative hole size,…
Small-core photonic crystal fibers with weakly disordered air-hole claddings
N. A. Mortensen, M. D. Nielsen, J. R. Folkenberg +2
Motivated by recent experimental work by Folkenberg et al. we consider the effect of weak disorder in the air-hole lattice of small-core photonic crystal fibers. We find that the b…
Material effects in airguiding photonic bandgap fibers
Jesper Laegsgaard, Niels Asger Mortensen, Jesper Riishede +1
The waveguiding properties of two silica-based airguiding photonic bandgap fiber designs are investigated with special emphasis on material effects. The nonlinear coefficients are…
Mode areas and field energy distribution in honeycomb photonic bandgap fibers
Jesper Laegsgaard, Niels Asger Mortensen, Anders Bjarklev
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…
A "poor man's approach" to modelling of micro-structured optical fibres
Jesper Riishede, Niels Asger Mortensen, Jesper Laegsgaard
Based on the scalar Helmholtz equation and the finite-difference approximation, we formulate a matrix eigenvalue problem for the calculation of propagation constants, beta(omega),…