Photonic chip for visible interferometry: laboratory characterization and comparison with the theoretical model

Manon Lallement, Sylvestre Lacour, Elsa Huby, Guillermo Martin, Kevin Barjot, Guy Perrin, Daniel Rouan, Vincent Lapeyrere, Sébastien Vievard, Olivier Guyon, Julien Lozi, Vincent Deo, Takayuki Kotani, Cecil Pham, Cedric Cassagnettes, Adrien Billat, Nick Cvetojevic, Franck Marchis

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Scopus citations

Abstract

Integrated optics are used to achieve astronomical interferometry inside robust and compact materials, improving the instruments stability and sensitivity. In order to perform differential phase measurements at the Hα line (656.3nm) with the 600-800nm spectro-interferometer FIRST, a photonic integrated circuit (PIC) is being developed. This PIC performs the visible combination of the beams coming from the telescope pupil sub-apertures. In this work, TEEM Photonics waveguides fabricated by K+: Na+ ion exchange in glass are characterized in terms of single-mode range and mode field diameter. The waveguide diffused index profile is modeled on Beamprop software. FIRST beam combiner building blocks are simulated, especially achromatic directional couplers and passive 2 phase shifters for a potential ABCD interferometric combination.

Original languageEnglish (US)
Title of host publicationAdvances in Optical and Mechanical Technologies for Telescopes and Instrumentation V
EditorsRamon Navarro, Roland Geyl
PublisherSPIE
ISBN (Electronic)9781510653573
DOIs
StatePublished - 2022
EventAdvances in Optical and Mechanical Technologies for Telescopes and Instrumentation V 2022 - Montreal, Canada
Duration: Jul 17 2022Jul 22 2022

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume12188
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

ConferenceAdvances in Optical and Mechanical Technologies for Telescopes and Instrumentation V 2022
Country/TerritoryCanada
CityMontreal
Period7/17/227/22/22

Keywords

  • Interferometry
  • beam combiners
  • high angular resolution
  • high contrast
  • pupil remapping
  • spectroscopy
  • visible photonics

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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