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Proceedings Paper

Single effective index method and scalar beam-propagation method analysis of bending loss for TE and TM polarized optical fields
Author(s): Won Jay Song; Byung-Ha Ahn
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Paper Abstract

We have applied the single effective index method to reduce the two-dimensional refractive index profile into the one-dimensional refractive index structure and modified the wave equations to obtain the paraxial wave equations. Then, TE and TM polarized fields in the curved single-mode planar waveguides are analyzed by using the scalar beam-propagation method employing the finite-difference method with a slab structure. The bending loss in bent waveguides is analyzed for optical fields obtained from the beam-propagation method and comparisons are made between the loss for the waveguides with various radius of curvature and the refractive index difference. The outward shift of the optical field, which is generated at the connection between a straight and a bent waveguide, is obtained from the results of calculation of location of the maximum optical intensity. The transition loss can be reduced by introducing an optimized inward offset at a straight-to-bend junction.

Paper Details

Date Published: 25 October 2002
PDF: 8 pages
Proc. SPIE 4772, Electro-Optical System Design, Simulation, Testing, and Training, (25 October 2002); doi: 10.1117/12.451840
Show Author Affiliations
Won Jay Song, Kwangju Institute of Science and Technology (South Korea)
Byung-Ha Ahn, Kwangju Institute of Science and Technology (South Korea)

Published in SPIE Proceedings Vol. 4772:
Electro-Optical System Design, Simulation, Testing, and Training
Richard M. Wasserman; Scott L. DeVore, Editor(s)

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