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Analysis of a reflected field from a waveguide facet: comparison between the reflection method with Pade approximants and the FDTD method

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Abstract

It is shown, through comparison with the FDTD method, that an accurate reflected field is obtained by the Padé (1,1) approximant with an appropriate branch-cut rotation rather than the higher-order Padé approximants.

© 2002 Optical Society of America

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