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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 18, Iss. 9 — Apr. 26, 2010
  • pp: 9413–9422

Performance of astronomical beam combiner prototypes fabricated by hybrid sol-gel technology

Askari Ghasempour, A.M.P. Leite, D. Alexandre, F. Reynaud, P.V.S. Marques, P.J.V. Garcia, and P.J. Moreira  »View Author Affiliations


Optics Express, Vol. 18, Issue 9, pp. 9413-9422 (2010)
http://dx.doi.org/10.1364/OE.18.009413


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Abstract

Integrated optics coaxial two, three and four telescope beam combiners have been fabricated by hybrid sol-gel technology for astronomical applications. Temporal and spectral analyses of the output interferometric signal have been performed, and their results are in mutual good agreement. The results of the characterization method employed are cross-checked using contrast measurements obtained independently, demonstrating that the chromatic differential dispersion is the main contributer to contrast reduction. The mean visibility of the fabricated devices is always higher than 95 %, obtained using a source with spectral bandwidth of 50 nm. These results show the capability of hybrid sol-gel technology for fast prototyping of complex chip designs used in astronomical applications.

© 2010 Optical Society of America

OCIS Codes
(120.3180) Instrumentation, measurement, and metrology : Interferometry
(130.3120) Integrated optics : Integrated optics devices
(160.6060) Materials : Solgel
(350.1260) Other areas of optics : Astronomical optics
(130.5460) Integrated optics : Polymer waveguides

ToC Category:
Instrumentation, Measurement, and Metrology

History
Original Manuscript: January 12, 2010
Revised Manuscript: March 28, 2010
Manuscript Accepted: March 29, 2010
Published: April 21, 2010

Citation
Askari Ghasempour, A. M. P. Leite, D. Alexandre, F. Reynaud, P. V. S. Marques, P. J. V. Garcia, and P. J. Moreira, "Performance of astronomical beam combiner prototypes fabricated by hybrid sol-gel technology," Opt. Express 18, 9413-9422 (2010)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-18-9-9413


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