2D FDTD for ring resonator structure

2D FDTD for observing coupling of light in ring resonator structure

Youtube link:-
http://www.youtube.com/watch?v=APmGe5RPWSc

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 :-

In this program, a 3.05 micron X 3.6 micron domain is taken with a 450 nm thick horizontal straight waveguide placed in the upper part at a distance of 300 nm from the top. A 450 nm thick ridged circular waveguide with a central radius of 1 micron is placed at a distance 100nm below the straight waveguide. Both the waveguides are made of material of relative permittivity 6. The surrounding area is free space of relative permittivity 1. A sinusoidal source of light of free space wavelength 1.753 microns is excited at the left end of the straight waveguide as a line source along the width of the waveguide. Light is guided through the straight waveguide and coupling into the circular waveguide and its accumulation in it is
observed.