Fully three-dimensional accurate modeling of scattering loss in optical waveguides |
| |
Authors: | Caterina Ciminelli Francesco Dell’Olio Vittorio M N Passaro and Mario N Armenise |
| |
Institution: | (1) University of Delaware, Newark, DE, USA; |
| |
Abstract: | Scattering loss in high-index-contrast optical waveguides has been modeled by a rigorous 3D numerical algorithm based on volume
current method. The electromagnetic field generated by the wire current distribution simulating sidewalls roughness has been
calculated by 3D finite element method. The developed modeling technique does not introduce any approximation in radiated
power estimation. Numerical results obtained by our model have been compared with some experimental results reported in literature
for four typical sub-micrometer high-index-contrast waveguides realized by different technologies and a very good agreement
(relative error less than 3%) has been demonstrated. Closed-form expressions for scattering loss in low-index-contrast waveguides
have been also derived and discussed. Developed modeling technique has been compared with other three-dimensional algorithms
for scattering loss estimation and its advantages in terms of accuracy, computation time and generality have been pointed
out. Scattering loss dependence on the parameters of the roughness distribution has been finally discussed. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |