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Modelling of photonic bandgap devices by the leaky mode propagation method
Author(s) -
Giorgio Agostino,
Gina Perri Anna
Publication year - 2003
Publication title -
international journal of numerical modelling: electronic networks, devices and fields
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.249
H-Index - 30
eISSN - 1099-1204
pISSN - 0894-3370
DOI - 10.1002/jnm.493
Subject(s) - harmonics , reflection (computer programming) , propagation constant , modal , power (physics) , photonic crystal , leaky mode , a priori and a posteriori , mode (computer interface) , transmission (telecommunications) , computer science , electronic engineering , field (mathematics) , band gap , optics , physics , acoustics , electrical engineering , telecommunications , mathematics , engineering , optoelectronics , single mode optical fiber , materials science , radiation mode , voltage , optical fiber , programming language , philosophy , operating system , epistemology , quantum mechanics , polymer chemistry , pure mathematics
Main modelling approaches used for investigating the Photonic bandgap (PBG) devices are reviewed. In particular, the model based on Leaky Mode Propagation (LMP) method is described. A complete analysis of the propagation characteristics, including the determination of modal propagation constants, electromagnetic field harmonics and total field distribution, transmission and reflection coefficients, total forward and backward power flow in the structure, guided and radiated power, and total losses, can be carried out by a computer program based on the LMP approach. The numerical results have been validated by comparisons with those obtained by using other more complex and expensive models. The new model shows some significant advantages in terms of very low computational time, absence of any a priori theoretical assumptions and approximations, capability of simulating the actual physical behaviour of the device and fast determination of the bandgap position.Copyright © 2003 John Wiley & Sons, Ltd.