Title :
Novel beam propagation algorithms for tapered optical structures
Author :
Sujecki, S. ; Sewell, P. ; Benson, T.M. ; Kendall, P.C.
Author_Institution :
Dept. of Electr. & Electron. Eng., Nottingham Univ., UK
fDate :
11/1/1999 12:00:00 AM
Abstract :
Novel beam propagation algorithms for tapers have been developed that eliminate errors caused by staircase approximations. Nonorthogonal coordinate systems are introduced that model the effects of beam spreading and obliqueness while retaining the standard coordinate z to advance the solution forward uniformly. Both two- and three-dimensional (2-D) and (3-D) examples are considered to illustrate both the accuracy and utility of the scheme. The new method maintains its accuracy with fewer sample points allowing significant reduction in calculation time
Keywords :
finite difference methods; integrated optics; optical waveguide theory; accuracy; beam propagation algorithms; beam spreading; calculation time; errors; finite difference beam propagation method; nonorthogonal coordinate systems; obliqueness; staircase approximations; standard coordinate z; tapered optical structures; tapered optical waveguides; three-dimensional examples; two-dimensional examples; Algorithm design and analysis; Channel capacity; Finite difference methods; Integrated optoelectronics; Numerical analysis; Optical materials; Optical propagation; Optical waveguide components; Optical waveguides; Photonics;
Journal_Title :
Lightwave Technology, Journal of
