2D FDTD of photonic crystal 1X4 power splitter

Youtube link:-
http://www.youtube.com/watch?v=8oGEE3R3D1s

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 7.05 micron x 10.65 micron structure is taken with 11x17 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 11x17 rectangular array at the centre of the domain with a separation of 0.45 micron between neighboring 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 in the center vertically down to form a splitter wave guide from left to center to right through two wings of removed periodic structures horizontally placed on either side of initial central waveguide and then further right to two more wings each in a similar fashion as before to form the 1X4 splitter. Light is guided through this structure to obtain splitting. Here Perfectly Matched Layer boundary condition is used.