02/10/1995 - Hightlights Of The Week Ahead.pdf

Previous results indicate that fibers in ribbons are sometimes affected by systematic birefringence superimposed on the random one, their relative weights depending on fiber position in the ribbon. We report new theoretical and experimental results on stress distribution in ribbons, which is shown to depend on thermal and mechanical properties of the common coating. Numerical simulations are based on the theory of elasticity and the finite-element method (FEM). Polarization dispersion measurements vs. temperature match very well with numerical results, and indicate that central fibers in the ribbon exhibit significantly larger birefringence than lateral ones

Numerical Analysis of Propagation and Impedance Matching in 2--D Photonic Crystal Waveguides with Finite Length

Wave propagation in two dimensional photonic crystal waveguides with finite length was analyzed. The relationship between forward and backward waves could be considered in terms of quantities like Bloch and load impedances, refraction coefficients and standing wave ratio (SWR). The main propagation features were obtained using concepts of propagation and transmission lines and theory of periodic structures