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ANALYSIS OF PERPENDICULAR CROSSING DIELECTRIC WAVEGUIDES WITH VARIOUS TYPICAL INDEX CONTRASTS AND INTERSECTION PROFILES

By H.-W. Chang and Y.-H. Wu

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Abstract:
We present a rigorous 2D numerical study of the transmission, reflection and crosstalk coefficients of the perpendicular, identical dielectric crossing waveguide with various core-cladding index contrasts for both TE and TM polarizations. Our method is based on a hybrid frequency-domain finite-difference (FD-FD) technique computed with the cross-symmetry model. By varying the intersection profile, such as the circular, filleted, tapered and elliptical shapes, we achieve, even for a large 3.5 to 1.5 index ratio, a low 0.25dB insertion loss, a nontrivial reduction over the straight direct crossing case.

Citation:
H.-W. Chang and Y.-H. Wu, "Analysis of Perpendicular Crossing Dielectric Waveguides with Various Typical Index Contrasts and Intersection Profiles," Progress In Electromagnetics Research, Vol. 108, 323-341, 2010.
doi:10.2528/PIER10081008
http://www.jpier.org/PIER/pier.php?paper=10081008

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