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An efficient Krylov-subspace-based algorithm to solve the dielectric-waveguide problem

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2 Author(s)
Radhakrishnan, K. ; Center for Comput. Electromagn., Illinois Univ., Urbana, IL, USA ; Weng Cho Chew

An efficient scheme based on the bi-Lanczos algorithm has been developed for analysis of the dielectric-waveguide problem. A two-dimensional finite-difference scheme in the frequency domain is used to discretize the waveguide cross section. The resulting sparse eigenvalue problem is solved efficiently using the bi-Lanczos algorithm. Apart from solving the modes of the dielectric waveguide, a scheme to solve for the fields in the presence of a localized source is also described. Numerical results are also included to confirm the validity of the method

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Microwave Theory and Techniques, IEEE Transactions on  (Volume:49 ,  Issue: 7 )