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Photonic Crystal Tapers for Coupling Large Ridge Waveguides to Photonic Crystal Waveguides

Published online by Cambridge University Press:  01 February 2011

Francis C. Ndi  and
Jean Toulouse
Francis C. Ndi
Affiliation:
Physics Department, Lehigh University, 16 memorial drive east, Bethlehem PA 18015, USA
Jean Toulouse
Affiliation:
Physics Department, Lehigh University, 16 memorial drive east, Bethlehem PA 18015, USA
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Abstract

We present a study of various photonic crystal taper structures each characterized by the taper angle and roughness for coupling light into 2-dimensional photonic crystal waveguides from large ridge waveguides. The photonic crystal waveguide is made of a triangular lattice of holes in a dielectric. The objective is to find a taper structure that offers the best coupling efficiency over a range of widths of the ridge waveguide while leaving a small footprint. We show that such a structure indeed exists and can be further optimized as the width of the ridge waveguide gets even larger leading to more than 90% increase in coupling efficiency in some cases.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 797: Symposium W – Engineered Porosity for Microphotonics and Plasmonics , 2003 , W5.8
Copyright
Copyright © Materials Research Society 2004

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References

REFERENCES

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