Title :
Time-domain wave propagation in optical structures
Author :
Chan, R.Y. ; Liu, J.M.
Author_Institution :
Dept. of Electr. Eng., California Univ., Los Angeles, CA, USA
Abstract :
To make time-domain computation more efficient in optical structures, the wave equation is rewritten to track only the envelope of the electric field. The resultant equation is complex in nature and it is solved via a mapping concept and a Pade approximation. Compared to the finite-difference time-domain algorithm, this method takes two orders of magnitude less memory. This method is applied to the propagation of a 500 fsec pulse in a waveguide over 2 mm. Transient behavior and the effects of waveguide parameters are demonstrated.<>
Keywords :
electromagnetic wave propagation; optical waveguide theory; optical waveguides; time-domain analysis; Pade approximation; electric field; finite-difference time-domain algorithm; mapping concept; memory; optical structures; resultant equation; time-domain computation; time-domain wave propagation; transient behavior; wave equation; waveguide; waveguide parameters; Electromagnetic propagation; Electromagnetic transients; Electromagnetic waveguides; Finite difference methods; Frequency; Optical propagation; Optical waveguides; Partial differential equations; Pulse modulation; Time domain analysis;
Journal_Title :
Photonics Technology Letters, IEEE
