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Mode calculation by beam propagation method combined with digital signal processing technique

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3 Author(s)
Ning-Ning Feng ; Dept. of Electr. Eng., McMaster Univ., Hamilton, Ont., Canada ; Gui-Rong Zhou ; Huang, Wei-Ping

A robust computational scheme for calculation of multiple modes of optical waveguides is developed and presented. The new method uses the beam propagation methods to generate the modal fields and a digital signal processing technique for mode parameter extraction. It can be applied to both guided and leaky modes with different formulations (i.e., scalar, semi-vector or full-vector) and discretizations (e.g., finite difference or finite element). Salient features of the new method are discussed and advantages over other computational methods based on boundary-value eigen solvers and initial-value propagation solvers are demonstrated by way of examples.

Published in:

Quantum Electronics, IEEE Journal of  (Volume:39 ,  Issue: 9 )