%0 Conference Proceedings %T Properties, applications and fabrication of photonic crystals with ring-shaped holes in silicon-on-insulator %+ Groupe d'étude des semiconducteurs (GES) %A Saynatjoki, A. %A Mulot, M. %A Vynck, Kevin %A Cassagne, David %A Ahopelto, J. %A Lipsanen, H. %< avec comité de lecture %Z GES:08-088 %( PHOTONICS AND NANOSTRUCTURES-FUNDAMENTALS AND APPLICATIONS %B 7th International Symposium on Photonic and Electromagnetic Crystal Structures (PECS-VII) %C Monterey (CA), United States %V 6 %P 42-46 %8 2007-04-08 %D 2007 %K guided waves %K integrated optics materials %K optical systems design %K waveguides %K photonic integrated circuits %K dispersion %K photonic crystals %K WAVE-GUIDES %K SLOW LIGHT %K PROPAGATION %Z Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci]Conference papers %X 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. %G English %L hal-00437948 %U https://hal.science/hal-00437948 %~ CNRS %~ UNIV-MONTP2 %~ GES %~ UNIV-MONTPELLIER %~ UM1-UM2