Double cladding photonic crystal fiber based on dual lattice structure: High birefringence and negative flat dispersion

摘要

We proposed double cladding photonic crystal fibers based on dual lattice structure which has high and flattened birefringence. Using double cladding structure of square lattice, high flat birefringence and negative flat dispersion can be achieved at the same time over wide wavelength region including S, C and L bands.