|Publication No: 1957||Search all ORC publications|
Indium oxide overlay gratings realised on glass waveguides using excimer laser ablation
S.Pissadakis, L.Reekie, M.N.Zervas, J.S.Wilkinson
Optoelectronics Research Centre, University of Southampton, UK
Foundation for Research and Technology-Hellas, I.E.S.L., Materials Group, P.O.Box 1527, Heraklion 71 1 10, Greece
Relief gratings overlaid on optical waveguides may be used as high-extinction ratio wavelength filters with applications in integrated optics and optical communications. Cross-patterned, high contrast relief grating waveguide structures may potentially perform as 2-D photonic band gaps if properly designed and fabricated. A new waveguide grating design process which relies on a novel grating patterning method and new materials will be presented in this paper. This design consists of the combination of a potassium ion-exchanged singlemode channel waveguide with a high-index film (InOx) overlaid on its upper surface . The high-index overlayer is deposited over a part of the waveguide length. A relief grating is patterned on the InOx layer using 248nm interferometric excimer laser ablation .
EXMATEC 2000 Crete Greece 21-24 May (2000)
Copyright University of Southampton 2006