Hosting exceptional points in 1D photonic bandgap waveguide for mode engineering

Published 12 Apr 2021 in physics.optics | (2104.05452v1)

Abstract: We report a planar 1D photonic bandgap waveguide exhibiting four second-order exceptional points (EP2s). The interactions between the selective pairs of supported quasi-guided TE modes are modulated by spatial distribution of transverse in-homogeneous gain-loss profile.

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