Abstract

The formation of localized states or modes at defects in waveguide arrays is investigated both, theoretically and experimentally. If the effective index or the coupling of the defect guide to its neighbors is varied the number and character of respective modes bound to the defect can be altered. Waveguide arrays may be considered as tailor-made or metamaterials with new and unexpected properties as e.g. guiding staggered modes bound to defects with reduced index. Although the symmetric defect waveguide becomes multimode for increased coupling it does not support antisymmetric modes. All theoretical predictions are confirmed in excellent agreement with experimental observations in polymer waveguide arrays.

© 2003 Optical Society of America

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Appl. Phys. Lett. (3)

G. von Freymanna, W. Koch, D. C. Meisel and M. Wegener, �??Diffraction properties of two-dimensional photonic crystals,�?? Appl. Phys. Lett. 83, 614-616 (2003).
[CrossRef]

S. Somekh, E. Garmire, A. Yariv, H. L. Garvin and R. G. Hunsperger, �??Channel optical waveguide directional couplers,�?? Appl. Phys. Lett. 22, 46-48 (1973).
[CrossRef]

U. Peschel, R. Morandotti, J. S. Aitchison, H. S. Eisenberg and Y. Silberberg, �??Nonlinearly Induced Escape from a Defect State,�?? Appl. Phys. Lett. 75, 1384-1386 (1999).

Electron. Lett. (1)

J. C. Knight, T. A. Birks, R. F. Cregan, P. St. J. Russell, and J.-P. de Sandro, �??Large Mode Area Photonic Crystal Fiber,�?? Electron. Lett. 34, 1347-1348 (1998).
[CrossRef]

Opt. Express (1)

Opt. Lett. (3)

Opt. Mat. (1)

U. Streppel, P. Dannberg, C. Wächter, A. Bräuer, L. Fröhlich, R. Houbertz and M. Popall, �??New wafer-scale fabrication method for stacked optical waveguide interconnects and 3D micro-optic structures using photo-responsive (inorganic-organic hybrid) polymers,�?? Opt. Mat. 21, 475-483 (2002).
[CrossRef]

Phys. Rev. B (1)

M. Notomi, �??Theory of light propagation in strongly modulated photonic crystals: Refractionlike behavior in the vicinity of the photonic band gap,�?? Phys. Rev. B 62, 10696-10705 (2000).
[CrossRef]

Phys. Rev. Lett. (3)

T. Pertsch, T. Zentgraf, U. Peschel, A. Bräuer and F. Lederer, �??Anomalous Refraction and Diffraction in Discrete Optical Systems,�?? Phys. Rev. Lett. 88, 093901-093904 (2002).
[CrossRef]

T. Pertsch, P. Dannberg, W. Elflein, A. Bräuer and F. Lederer, �??Optical Bloch Oscillations in Temperature Tuned Waveguide Arrays,�?? Phys. Rev. Lett. 83, 4752-4755 (1999).
[CrossRef]

R. Morandotti, U. Peschel, J. S. Aitchison, H. S. Eisenberg and Y. Silberberg, �??Experimental Observation of Linear and Nonlinear Optical Bloch Oscillations,�?? Phys. Rev. Lett. 83, 4756-4759 (1999).
[CrossRef]

Science (1)

P Russell, �??Photonic Crystal Fibers,�?? Science 299, 358-363 (2003).
[CrossRef]

Thin Solid Films (1)

R. Houbertz, G. Domann, C. Cronauer, A. Schmitt, H. Martin, J.-U. Park, L. Fröhlich, R. Buestrich, M. Popall, U. Streppel, P. Dannberg, C. Wächter and A. Bräuer, �??Inorganic-organic hybrid materials for application in optical devices,�?? Thin Solid Films 422, 194-200 (2003)

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