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Optica Publishing Group
  • Journal of Lightwave Technology
  • Vol. 31,
  • Issue 21,
  • pp. 3387-3394
  • (2013)

Mode Conversion/Splitting in Multimode Waveguides Based on Invariant Engineering

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Abstract

We discuss mode conversion and splitting in multimode waveguides based on Lewis–Riesenfeld invariant theory. The design of mode converters/splitters using the dynamical invariant is discussed. Closed form expressions for the modal power at the output for converter/splitter design are derived. Various design approaches are discussed and assessed by beam propagation simulations. We show that the invariant-based engineering scheme reduces device length as compared to the common adiabatic scheme.

© 2013 IEEE

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