Direct UV-Written Integrated Optical Beam Combiner for Stellar Interferometry

Massimo Olivero, Mikael Svalgaard, L. Jocou, J.P. Berger

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Abstract

In this paper, we report the fabrication of an optical-beam combiner for stellar interferometry by means of direct ultraviolet (UV) writing. The component is shown to have good performance (fringe contrast > 95%, total loss similar to 0.7, -40-dB crosstalk, broadband operation covering at least the range 1.49-1.65 mu m, and low differential chromatic dispersion). The overall performance exceeds that of similar components currently used for astronomical research. This result, combined with the fast-prototyping ability of UV writing, opens up new possibilities for the realization of highly optimized integrated -optical components for astronomical research.
Original languageEnglish
JournalJournal of Lightwave Technology
Volume25
Issue number1
Pages (from-to)367-371
ISSN0733-8724
DOIs
Publication statusPublished - 2007

Bibliographical note

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Keywords

  • optical-device fabrication
  • optical interferometry
  • direct ultraviolet (UV) writing
  • optical-planar-waveguide components
  • astronomy

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