Open AccessCrosstalk-free design for the intersection of two dielectric waveguides
Author(s) -
Jingjing Li,
David Fattal,
Raymond G. Beausoleil
Publication year - 2009
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.17.007717
Subject(s) - optics , planar , crosstalk , dielectric , photonic integrated circuit , interconnection , materials science , integrated circuit , optoelectronics , computer science , photonics , physics , telecommunications , computer graphics (images)
We propose an efficient method to reduce the crosstalk, reflection and radiation at the crossing of two dielectric waveguides in a on-chip optical interconnect network. By increasing the vertical thickness of the guides locally in the crossing region, we create better mode-matching interfaces that dramatically reduce losses. The idea is demonstrated using numerical simulations. More than 95% crosstalk power reduction and 90% reflection power reduction are observed, while the radiation power can be reduced by 40%. The method is compatible with the planar integrated circuit technique.