Direct UV-Written Integrated Optical Beam Combiner for Stellar Interferometry

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

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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
Issue number1
Pages (from-to)367-371
Publication statusPublished - 2007

Bibliographical note

Copyright: 2007 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE


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


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