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A new approach is proposed for computer simulation of radiation losses in photonic crystal fibers with multilayer Bragg reflecting cladding based on exact finite-difference method for Maxwell equations in cylindrical coordinates. Effectiveness of the approach is illustrated by leaky modes calculations in air and water filled hollow core fibers.
The strong photosensitivity and nonlinearity of chalcogenide glass makes this material an ideal platform for Bragg soliton devices. We present the first nonlinear grating experiment in an integrated chalcogenide waveguide.
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