Grillet, Christian, University of Sydney, CUDOSLee, MichaelGrillet, ChristianSmith, Cameron L CMoss, D JEggleton, Benjamin JFreeman, DarrenLuther-Davies, BarryMadden, SteveRode, Andrei VRuan, YinlanLee, Yong Hee2009-06-092010-12-202009-06-092010-12-20Optics Express 15.3 (2007): 1277-12851094-4087http://hdl.handle.net/10440/435http://digitalcollections.anu.edu.au/handle/10440/435We present experimental results on post-tuning the dispersion of a two-dimensional photonic crystal waveguide made from Ge33As12Se55 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.9 pages"OSA will grant the authors permission to deposit the publisher’s pdf from their Optics Express articles into the repository with the proper citation (reference number or journal /volume/page/year citation)." - from email received from Authorized Agent, The Optical Society, 27/05/10optical devices; integrated optics devicesoptical devices; waveguidesfiber optics and optical communications; couplers, switches, and multiplexersmaterials; photorefractive materials2007-02-0510.1364/OE.15.0012772015-12-08