Title :
Modelling of out-of-plane losses in a 2D photonic crystal waveguiding structure fabricated by interference lithography in slow light regime
Author :
Lis, Szymon ; Dawidowski, Wojciech ; Wielichowski, Marcin ; Ptasinski, Konrad ; Patela, Sergiusz
Author_Institution :
Fac. of Microsyst. Electron. & Photonics, Wroclaw Univ. of Technol., Wroclaw, Poland
Abstract :
The results of 3D FDTD calculations of out-of-plane radiation losses in slow light regime for a 2D Silicon-On-Insulator (SOI) Photonic Crystal (PhC) slab are presented. In a 2D PhC slab structure periodicity causes a scattering out of waveguiding modes to the radiating modes. Optical sensors based on 2D PhCs working in slow light regime call for long devices in order to make the path of light propagation longer. At the same time, slowing down the group velocity of light extends signal interaction time with the investigated surroundings. By using a 3D model of an SOI PhC slab we will present the influence of the hole depth and side walls slope of a 2D PhC on the out-of-plane scattering. The possibility of utilising an interference lithograph to fabricate the modelled structure is discussed as well.
Keywords :
finite difference time-domain analysis; lithography; optical losses; optical sensors; optical waveguides; photonic crystals; silicon-on-insulator; slow light; 2D photonic crystal waveguiding structure; 2D silicon-on-insulator; 3D FDTD calculations; Si; group velocity; interference lithograph; interference lithography; light propagation; optical sensors; out-of-plane losses; slow light; Finite difference methods; Time domain analysis;
Conference_Titel :
Students and Young Scientists Workshop, 2010 IEEE International
Conference_Location :
Szklarska Poreba
Print_ISBN :
978-1-4244-8324-2
DOI :
10.1109/STYSW.2010.5714166
