Re: Calculating the light lines with mpb

Hi Andreas

"The light cone is NOT determined by the "average" refractive index in
a given direction, at least not for any
 simple definition of "average". Rather, it is determined by the
lowest-lying mode of the cladding as described
in the 'Physical Review B, Vol.60, p.5751 (1999)'.

For a homogeneous cladding, of course, this is just w=ck/n. But for a
periodic cladding, say oxide pierced by
a 2d array of holes, then to get the light line you must do a 2d
calculation of the band structure in the oxide pattern...
the lowest (TM *or* TE) band of this 2d pattern is then the boundary
of the light cone."--SGJ

Regards

--
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Hasan, Md. Tanbir,
Graduate Student (Final year)
Master of Photonics Science and Engineering
Ghent University and Vrije Universiteit Brussel
Belgium
Alt Email: [email protected], [email protected],
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