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Guided-wave devices with fixed losses inspired by PT-symmetry and their spectrum singularity

Abstract : Guided-wave devices with plasmonic-type fixed losses can be adapted to exploit the singular point behavior well known for exact PT symmetric guides. Coupled guides having fixed losses and variable gain fail to exhibit a singular point in their eigenvalues if the guides! effective indices coincide. We show how to "heal# this situation and restore singularity by detuning among the guides. We also present a frame inspired by Kogelnik!s representations of alternate 'E couplers to usefully account for several configurations.
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https://hal-iogs.archives-ouvertes.fr/hal-00857669
Contributor : Henri Benisty Connect in order to contact the contributor
Submitted on : Wednesday, August 24, 2022 - 9:33:32 PM
Last modification on : Monday, August 29, 2022 - 2:30:30 PM

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Henri Benisty, Aloyse Degiron, Anatole Lupu. Guided-wave devices with fixed losses inspired by PT-symmetry and their spectrum singularity. 4th International Conference on Metamaterials, photonic crystals and plasmonics (META13), Mar 2013, Sharjah, United Arab Emirates. ⟨hal-00857669⟩

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