Abstract
Accurate rational approximations to the square root operators are crucial
for the bidirectional beam propagation method in simulation of strongly reflective
structures. An assessment and comparison of various commonly used rational
approximations is performed for both transverse electric (TE) and transverse
magnetic (TM) waves. The range of validity and level of accuracy for the different
approximations are studied by investigating the structures with varying reflection
intensities. Guidelines for accurately modeling of evanescent and propagating
modes are provided.
© 2008 IEEE
PDF Article
More Like This
Cited By
You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.
Contact your librarian or system administrator
or
Login to access Optica Member Subscription