Modelling of photonic wire Brag Gratings
Gnan, M , Bellanca, G, Chong, H M H, Bassi, P and De La Rue, R M (2006) Modelling of photonic wire Brag Gratings. Special Issue of Optical and Quantum Electronics, Optical Waveguide Theory and Numerical Modelling, 38, (1-3), 133-148.
Some important properties of photonic wire Bragg grating structures have been investigate. The design, obtained as a generalisation of the full-width gap grating, has been modelled using 3D finite-difference time-domain simulations. Different types of stop-band have been observed. The impact of the grating geometry on the lowerst order (longest wavelength) stop-band has been investigated - and has identified deeply indented confirugations where reduction of the stop-bandwidth and of the reflectivity occurred. Our computational results have been substantially validated by an experimental demonstration of the fundamental stop-band of photonic wire Bragg gratings fabricated on silicon-on-insulator material. The accuracy of two distinct 2D computational models based on the effective index method has also been studied - because of their inherently much greater rapidity and consequent utility for approximate initial designs. A 2D plan-view model has been found to reproduce a large part of the essential features of the spectral response of full 3D models.
|Keywords:||finite-difference time-domain, optical waveguide modelling, photonic crystal, photonic wire, silicon on insulator, waveguide grating|
|Divisions:||Faculty of Physical and Applied Science > Electronics and Computer Science > NANO
|Date Deposited:||27 Nov 2007 10:01|
|Last Modified:||02 Mar 2012 11:59|
|Contributors:||Gnan, M (Author)
Bellanca, G (Author)
Chong, H M H (Author)
Bassi, P (Author)
De La Rue, R M (Author)
|Further Information:||Google Scholar|
|RDF:||RDF+N-Triples, RDF+N3, RDF+XML, Browse.|
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