Journal
PHOTONICS AND NANOSTRUCTURES-FUNDAMENTALS AND APPLICATIONS
Volume 6, Issue 1, Pages 42-46Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.photonics.2007.09.001
Keywords
guided waves; integrated optics materials; optical systems design; waveguides; photonic integrated circuits; dispersion; photonic crystals
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We show that photonic crystals with ring-shaped holes (RPhCs) exhibit superior properties compared to conventional photonic crystals (PhCs). At low air-fill factors RPhCs can have a larger bandgap than conventional PhCs. Moreover, RPhC waveguides with both high group index and small group velocity dispersion can be designed. RPhC waveguides are also more sensitive to external refractive index changes, which is attractive for sensor applications. Finally we set up a procedure to pattern RPhCs in silicon-on-insulator. (c) 2007 Elsevier B.V. All rights reserved.
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