Detection of mode conversion in a subwavelength thin film heterostructure

J. Manzanares-Martinez*

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review


An asymmetric propagation in a photonic diode-like heterostructure is studied theoretically. The heterostructure is composed by two distinct planar waveguides with low and high refractive indices, respectively. The physical mechanism exploited to obtain an asymmetric propagation is based on the matching of eigenmodes. Considering the Transversal Magnetic (TM) polarization, it is found that at a specific frequency on the low index waveguide only the first even mode (TMe1) exists while for the high index waveguide two modes are allowed, the TMe1 and the first odd mode (TMo1). We report an asymmetric transmission through the junction of waveguides. On the one hand, it is observed that the TMe1 mode is able to propagate from the low into the high index waveguide and vice-versa. On the other hand, the TMo1 mode cannot pass from the high into the low index waveguide.

Original languageEnglish
Title of host publicationNanostructured Thin Films IX
EditorsTom G. Mackay, Akhlesh Lakhtakia, Motofumi Suzuki
ISBN (Electronic)9781510602496
StatePublished - 2016
EventNanostructured Thin Films IX - San Diego, United States
Duration: 30 Aug 20161 Sep 2016

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X


ConferenceNanostructured Thin Films IX
Country/TerritoryUnited States
CitySan Diego

Bibliographical note

Publisher Copyright:
© 2016 SPIE.


  • Diode
  • subwavelength
  • waveguide


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