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2004•IEEE Photonics Technology LettersRequires access

A Propagator- $theta$ Beam Propagation Method

Siu Lit Chui, Ya Yan Lu

Open publisher page 9 citations

Abstract

A new wide-angle beam propagation method is developed for better modeling of both propagating and evanescent modes. It brings in a parameter /spl theta/ to connect the [(p-1)/p] and [p/p] Pade/spl acute/ approximants of the one-way propagator. The parameter can be used to adjust the requirements of approximating the propagating modes and suppressing the evanescent modes. Numerical results indicate that a suitable choice of /spl theta/ leads to improved accuracy of the solution.

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What this paper is about

A new wide-angle beam propagation method is developed for better modeling of both propagating and evanescent modes. It brings in a parameter /spl theta/ to connect the [(p-1)/p] and [p/p] Pade/spl acute/ approximants of the one-way propagator. The parameter can be used to adjust the requirements of approximating the propagating modes and suppressing the evanescent modes. Numerical results indicate that a suitable choice of /spl theta/ leads to improved accuracy of the solution.

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Available abstract

A new wide-angle beam propagation method is developed for better modeling of both propagating and evanescent modes. It brings in a parameter /spl theta/ to connect the [(p-1)/p] and [p/p] Pade/spl acute/ approximants of the one-way propagator. The parameter can be used to adjust the requirements of approximating the propagating modes and suppressing the evanescent modes. Numerical results indicate that a suitable choice of /spl theta/ leads to improved accuracy of the solution.

Key concepts: Padé approximant, Propagator, Beam propagation method, Physics, Beam (structure), Quantum electrodynamics, Mathematical analysis, Mathematics

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