---
_id: '55751'
abstract:
- lang: eng
  text: Lateral leakage of TM modes in dielectric optical waveguides of rib/ridge
    or strip-loaded types can be fully suppressed, if the waveguide core is formed
    not through a strip that protrudes at one side (up) from the remaining lateral
    guiding slab, but through parallel strips on both sides (up and down), such that
    the resulting cross section becomes vertically symmetric. The fairly general arguments
    underlying the leakage suppression apply to TM modes of all orders simultaneously,
    and are independent of wavelength. These plus-shaped waveguides support strictly
    guided, non-leaky TM modes for, in principle, arbitrarily shallow etching.
article_type: original
author:
- first_name: Necati
  full_name: Üstün, Necati
  last_name: Üstün
- first_name: Henna
  full_name: Farheen, Henna
  id: '53444'
  last_name: Farheen
  orcid: 0000-0001-7730-3489
- first_name: Manfred
  full_name: Hammer, Manfred
  id: '48077'
  last_name: Hammer
  orcid: 0000-0002-6331-9348
- first_name: Jens
  full_name: Förstner, Jens
  id: '158'
  last_name: Förstner
  orcid: 0000-0001-7059-9862
citation:
  ama: Üstün N, Farheen H, Hammer M, Förstner J. Symmetry-protected TM modes in rib-like,
    plus-shaped optical waveguides with shallow etching. <i>Journal of the Optical
    Society of America B</i>. 2024;41(9):2077. doi:<a href="https://doi.org/10.1364/josab.528729">10.1364/josab.528729</a>
  apa: Üstün, N., Farheen, H., Hammer, M., &#38; Förstner, J. (2024). Symmetry-protected
    TM modes in rib-like, plus-shaped optical waveguides with shallow etching. <i>Journal
    of the Optical Society of America B</i>, <i>41</i>(9), 2077. <a href="https://doi.org/10.1364/josab.528729">https://doi.org/10.1364/josab.528729</a>
  bibtex: '@article{Üstün_Farheen_Hammer_Förstner_2024, title={Symmetry-protected
    TM modes in rib-like, plus-shaped optical waveguides with shallow etching}, volume={41},
    DOI={<a href="https://doi.org/10.1364/josab.528729">10.1364/josab.528729</a>},
    number={9}, journal={Journal of the Optical Society of America B}, publisher={Optica
    Publishing Group}, author={Üstün, Necati and Farheen, Henna and Hammer, Manfred
    and Förstner, Jens}, year={2024}, pages={2077} }'
  chicago: 'Üstün, Necati, Henna Farheen, Manfred Hammer, and Jens Förstner. “Symmetry-Protected
    TM Modes in Rib-like, plus-Shaped Optical Waveguides with Shallow Etching.” <i>Journal
    of the Optical Society of America B</i> 41, no. 9 (2024): 2077. <a href="https://doi.org/10.1364/josab.528729">https://doi.org/10.1364/josab.528729</a>.'
  ieee: 'N. Üstün, H. Farheen, M. Hammer, and J. Förstner, “Symmetry-protected TM
    modes in rib-like, plus-shaped optical waveguides with shallow etching,” <i>Journal
    of the Optical Society of America B</i>, vol. 41, no. 9, p. 2077, 2024, doi: <a
    href="https://doi.org/10.1364/josab.528729">10.1364/josab.528729</a>.'
  mla: Üstün, Necati, et al. “Symmetry-Protected TM Modes in Rib-like, plus-Shaped
    Optical Waveguides with Shallow Etching.” <i>Journal of the Optical Society of
    America B</i>, vol. 41, no. 9, Optica Publishing Group, 2024, p. 2077, doi:<a
    href="https://doi.org/10.1364/josab.528729">10.1364/josab.528729</a>.
  short: N. Üstün, H. Farheen, M. Hammer, J. Förstner, Journal of the Optical Society
    of America B 41 (2024) 2077.
date_created: 2024-08-25T10:24:58Z
date_updated: 2024-08-25T10:48:42Z
ddc:
- '530'
department:
- _id: '61'
- _id: '429'
doi: 10.1364/josab.528729
file:
- access_level: local
  content_type: application/pdf
  creator: fossie
  date_created: 2024-08-25T10:30:28Z
  date_updated: 2024-08-25T10:30:28Z
  file_id: '55752'
  file_name: 2024-08 Farheen - JOSA B - Symmetry-protected TM modes in rib-like, plus-shaped
    optical waveguides with shallow etching.pdf
  file_size: 920206
  relation: main_file
- access_level: open_access
  content_type: application/pdf
  creator: fossie
  date_created: 2024-08-25T10:48:05Z
  date_updated: 2024-08-25T10:48:05Z
  file_id: '55753'
  file_name: 2024-08 Farheen - JOSA B - Symmetry-protected TM modes in rib-like, plus-shaped
    optical waveguides with shallow etching (preprint).pdf
  file_size: 931810
  relation: main_file
  title: (preprint)
file_date_updated: 2024-08-25T10:48:05Z
has_accepted_license: '1'
intvolume: '        41'
issue: '9'
keyword:
- tet_topic_waveguide
language:
- iso: eng
oa: '1'
page: '2077'
project:
- _id: '266'
  grant_number: PROFILNRW-2020-067
  name: 'PhoQC: PhoQC: Photonisches Quantencomputing'
- _id: '167'
  grant_number: '231447078'
  name: 'TRR 142 - B06: TRR 142 - Ultraschnelle kohärente opto-elektronische Kontrolle
    eines photonischen Quantensystems (B06*)'
publication: Journal of the Optical Society of America B
publication_identifier:
  issn:
  - 0740-3224
  - 1520-8540
publication_status: published
publisher: Optica Publishing Group
status: public
title: Symmetry-protected TM modes in rib-like, plus-shaped optical waveguides with
  shallow etching
type: journal_article
user_id: '158'
volume: 41
year: '2024'
...