2D FDTD of photonic crystal 90 degree bent waveguide

2D FDTD of light guided through a 90 degree bend in a photonic crystal waveguide

Youtube links:
http://www.youtube.com/watch?v=dfFKwPZQ-lk
http://www.youtube.com/watch?v=Jk7wMPChW_E&feature=related

Written for Course :-
Computational Electromagnetics, Fall 2011
Department of Electrical Engineering
Indian Institute of Technology Madras (IITM)
Chennai - 600036, India

Authors :-
Sathya Swaroop Ganta, B.Tech., M.Tech. Electrical Engg.
Kayatri, M.S. Engineering Design
Pankaj, M.S. Electrical Engg.
Sumantra Chaudhuri, M.S. Electrical Engg.
Projesh Basu, M.S. Electrical Engg.
Nikhil Kumar CS, M.S. Electrical Engg.

Instructor :-
Dr. Ananth Krishnan
Assistant Professor
Department of Electrical Engineering
Indian Institute of Technology Madras
http://www.ee.iitm.ac.in/~ananthk

Description :-

A 4.65 micron x 4.65 micron structure is taken with 7x7 periodic structures of square dimensions (made of silicon i.e n=3.4) having 0.15 micron as the length of a side as a 7x7 square array at the centre of the domain with a separation of 0.45 micron between neighbouring structure both horizontally and vertically. The region in between and surrounding that of the structures are filled with air of refractive index, n=1. A central horizontal line from left of 3 periodic structures are removed followed by removal of 3 periodic structures down to form a 90 degree bent wave guide from left to center to bottom through which the light is guided. Here Mur's absorbing boundary condition is used.