Exceptional points in composite structures consisting of two dielectric diffraction gratings with Lorentzian line shape
2021 ◽
Vol 2015
(1)
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pp. 012049
Keyword(s):
Abstract Using scattering matrix formalism we derive analytical expressions for the eigenmodes of a composite structure consisting of two dielectric diffraction gratings with Lorentzian profile in reflection. Analyzing these expressions we prove formation of two distinct pairs of exceptional points, provide analytical approximations for their coordinates and by rigorous simulation demonstrate eigenmodes interchange as a result of encircling said exceptional points.
2021 ◽
Keyword(s):
2014 ◽
Vol 6
(1)
◽
pp. 92-100
◽
Keyword(s):
2021 ◽
Vol 9
(12)
◽
pp. 1114-1127
Keyword(s):