https://doi.org/10.1140/epjb/e2004-00370-y
Design of omnidirectional asymmetrical high reflectors for optical telecommunication wavelengths
Laboratoire de Photovoltaïque et Matériaux Semi-conducteurs (LPMS), École Nationale d'ingénieurs de Tunis BP 37 Belvédère 1002 Tunis, Tunisia
Corresponding author: a mounir.kanzari@ipeit.rnu.tn
Received:
20
May
2004
Published online:
14
December
2004
A design for omnidirectional asymmetrical high reflectors for optical
telecommunication wavelengths is described. Asymmetry was introduced by
applying a power law, so that the coordinates y of the transformed object
were determined through the coordinates x of the quarter-wave stack
air/H(LH)15/air in accordance with the following rule 
. Here k is the
coefficient defining the asymmetry degree. It is shown that a
high-reflection band at any incident angle for both polarizations, i.e., an
omnidirectional high reflection band of 0.74 
m for optical
telecommunication wavelengths 0.85 and 1.3 m is found for the
transformed system: air/Te(SiO2/Te)15/air corresponding to the
optimized k value 0.24.
PACS: 42.70.Qs – Photonic bandgap materials / 78.20.Bh – Theory, models, and numerical simulation / 77.55.+f – Dielectric thin films
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2004
