Higher order Conjugate Exceptional Points in an 1D Photonic Bandgap Waveguide
Abstract
We demonstrate third-order conjugate exceptional points (EPs) in a gain-loss assisted multi-mode 1D complementary photonic bandgap waveguide. Our study reveals the higher-order mode conversion phenomenon facilitated by parametrically encircled third-order conjugate EPs, showcasing the potential for on-chip mode conversion
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