title: Photosensitive post tuning of chalcogenide photonic crystal waveguides.
abstract: We present experimental results on post-tuning the dispersion of a two-dimensional photonic crystal waveguide made from Ge(33)As(12)Se(55) 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.
authors.forename: Michael W
authors.initials: MW
authors.lastname: Lee
authors.forename: Christian
authors.initials: C
authors.lastname: Grillet
authors.forename: Cameron L C
authors.initials: CL
authors.lastname: Smith
authors.forename: David J
authors.initials: DJ
authors.lastname: Moss
authors.forename: Benjamin J
authors.initials: BJ
authors.lastname: Eggleton
authors.forename: Darren
authors.initials: D
authors.lastname: Freeman
authors.forename: Barry
authors.initials: B
authors.lastname: Luther-Davies
authors.forename: Steve
authors.initials: S
authors.lastname: Madden
authors.forename: Andrei
authors.initials: A
authors.lastname: Rode
authors.forename: Yinlan
authors.initials: Y
authors.lastname: Ruan
authors.forename: Yong-Hee
authors.initials: YH
authors.lastname: Lee