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

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Henri Benisty
Anatole Lupu

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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Dates and versions

hal-00857669 , version 1 (24-08-2022)

Licence

Attribution - CC BY 4.0

Identifiers

  • HAL Id : hal-00857669 , version 1

Cite

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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