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A Three-Dimensional Multistep Horizontally Wide-Angle Beam-Propagation Method Based on the Generalized Douglas Scheme

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4 Author(s)
Jun Shibayama ; Fac. of Eng., Hosei Univ., Tokyo ; Tatsuya Takahashi ; Junji Yamauchi ; Hisamatsu Nakano

A three-dimensional horizontally wide-angle beam-propagation method is formulated on the basis of the multistep method for higher order Pade approximants, together with the alternating-direction implicit scheme. The fourth-order accurate finite-difference formula is used to enhance the efficiency of the method. The effectiveness is demonstrated through the analyses of a tilted step-index waveguide and a multimode interference coupler

Published in:

IEEE Photonics Technology Letters  (Volume:18 ,  Issue: 23 )