---
res:
  bibo_abstract:
  - <jats:p>Several recent proposals in integrated photonics concern components that
    operate on so-called semi-guided waves. Given a dielectric multilayer slab structure,
    these are wave solutions that propagate along the slab with the functional dependence
    of ordinary harmonic plane waves, but with modal confinement in the direction
    perpendicular to the slab plane. While the in-plane unbounded waves are valid
    as a theoretical construct, practical devices will have to work with laterally
    confined optical fields. To that end we consider Gaussian superpositions of semi-guided
    waves, for a range of in-plane propagation angles, here named “semi-guided Gaussian
    beams.” This paper collects a series of relations that characterize these wave
    bundles, with emphasis on their divergence. The expressions resemble standard
    results for optical Gaussian beams, with modifications originating from the 1-D
    guiding and 1-D bundling. Examples for a high-contrast silicon-on-insulator slab
    at a typical telecom wavelength are discussed.</jats:p>@eng
  bibo_authorlist:
  - foaf_Person:
      foaf_givenName: Manfred
      foaf_name: Hammer, Manfred
      foaf_surname: Hammer
      foaf_workInfoHomepage: http://www.librecat.org/personId=48077
    orcid: 0000-0002-6331-9348
  - foaf_Person:
      foaf_givenName: Jens
      foaf_name: Förstner, Jens
      foaf_surname: Förstner
      foaf_workInfoHomepage: http://www.librecat.org/personId=158
    orcid: 0000-0001-7059-9862
  bibo_doi: 10.1364/josab.606932
  bibo_issue: '9'
  bibo_volume: 43
  dct_date: 2026^xs_gYear
  dct_isPartOf:
  - http://id.crossref.org/issn/0740-3224
  - http://id.crossref.org/issn/1520-8540
  dct_language: eng
  dct_publisher: Optica Publishing Group@
  dct_subject:
  - tet_topic_waveguide
  dct_title: Semi-guided Gaussian beams@
...