Abstract
Here we point out that in their comment Bastiaansen et al. [ Appl. Opt. 33, this issue (1994)] overlooked both the context of and the assumptions in Jaeger and Lai’s paper [ Appl. Opt. 31, 7183–7190 (1992)]. This omission appears to have resulted in their applying the Jaeger and Lai method inappropriately to a particular rib waveguide structure, yielding strange results. Therefore we present the underlying theory and ad hoc a simple and theoretically consistent method for applying it to rib waveguides. We demonstrate that good results may be obtained for a weakly guiding rib waveguide structure when field separability may be assumed, i.e., one that better meets the assumptions; this structure was chosen because numerical results were available for comparison.
© 1994 Optical Society of America
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Harrie J. M. Bastiaansen, Jos J. G. M. van der Tol, and Dirk J. van den Berge
Appl. Opt. 33(28) 6683-6685 (1994)
Nicolas A. F. Jaeger and Winnie C. Lai
Appl. Opt. 31(34) 7183-7190 (1992)
M. Khelkhal and F. Herlemont
Appl. Opt. 33(34) 8056-8056 (1994)