✦ LIBER ✦

Numerical instability of finite-difference beam-propagation method in the analysis of tapered optical waveguides

✍ Scribed by Hyangwon Seo; Sungtae Kim; Sang-Sun Lee; Hosung Chang; Myung-Ryul Choi

Publisher: John Wiley and Sons
Year: 1999
Tongue: English
Weight: 150 KB
Volume: 23
Category: Article
ISSN: 0895-2477
DOI: 10.1002/(sici)1098-2760(19991020)23:2<84::aid-mop7>3.0.co;2-k

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✦ Synopsis

We in¨estigate the numerical instability of a finitedifference beam-propagation formulation applied to tapered optical wa¨eguides, and we find that instability may occur with the use of con¨entional transparent boundary conditions. We suggest modified transparent boundary conditions to remo¨e the instability by controlling the amount of outgoing energy flux from wa¨eguide structures.

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