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Proceedings Paper

Potential applications of ring resonators for astronomical instrumentation
Author(s): S. C. Ellis; A. Crouzier; J. Bland-Hawthorn; J. S. Lawrence; J. Kepple
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Paper Abstract

Ring resonators are a looped waveguide coupled to an input and an output waveguide. They can be used to filter, and drop, a series of wavelengths at the resonant frequencies of the ring. Both these properties are useful for astronomical applications. The dropped signal provides a frequency comb that can be used to provide accurate wavelength calibration. The free spectral range of such a device is larger than that from a laser comb, removing the requirement to perform subsequent filtering. The filtered signal could be used to suppress specific wavelengths, e.g. corresponding to atmospheric emission lines. We present the expected performance of devices designed for both applications and discuss their advantages and limitations.

Paper Details

Date Published: 13 September 2012
PDF: 8 pages
Proc. SPIE 8450, Modern Technologies in Space- and Ground-based Telescopes and Instrumentation II, 84501J (13 September 2012); doi: 10.1117/12.925804
Show Author Affiliations
S. C. Ellis, Australian Astronomical Observatory (Australia)
A. Crouzier, Institut de Planétologie et d’Astrophysique de Grenoble (France)
Australian Astronomical Observatory (Australia)
J. Bland-Hawthorn, The Univ. of Sydney (Australia)
J. S. Lawrence, Australian Astronomical Observatory (Australia)
J. Kepple, Australian Astronomical Observatory (Australia)

Published in SPIE Proceedings Vol. 8450:
Modern Technologies in Space- and Ground-based Telescopes and Instrumentation II
Ramón Navarro; Colin R. Cunningham; Eric Prieto, Editor(s)

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