Abstract
We present experimental results on post-tuning the dispersion of a two-dimensional photonic crystal waveguide made from Ge33As 12Se55 chalcogenide glass by exploiting the material photosensitivity to near-bandgap light. The change in the refractive index and volume of the material in response to exposure to 633nm light resulted in a shift of more than 5nm in the resonant coupling wavelength between a tapered optical fiber and the modes of a W1 waveguide. This represents a first proof of principle demonstration of the photosensitive post-tuning of a planar photonic crystal device.
| Original language | English |
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| Pages (from-to) | 1277-1285 |
| Number of pages | 9 |
| Journal | Optics Express |
| Volume | 15 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - 5 Feb 2007 |