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Proceedings Article

Waveguide spectrographs for astronomy?

[+] Author Affiliations
Frederick G. Watson

Anglo-Australian Observatory (Australia)

Proc. SPIE 2871, Optical Telescopes of Today and Tomorrow, 1373 (March 21, 1997); doi:10.1117/12.269030
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From Conference Volume 2871

  • Optical Telescopes of Today and Tomorrow
  • Arne L. Ardeberg
  • Landskrona/Hven, Sweden | May 29, 1996

abstract

It is suggested that multi-mode slab waveguide spectrographs, developed for wavelength division multiplexing (WDM) in optical communications, might have a role in astronomical instrumentation. A stack of such waveguide devices could form an effective instrument for multi-object spectroscopy. The performance of some existing devices is described, and their applicability to astronomy investigated. It is found to be limited. However, it is shown that only a modest improvement in resolution (by a factor of 2 - 4), together with a realization of the potentially very high optical efficiency, could yield an astronomically-useful device. The problems anticipated in developing such an instrument are outlined.

© (1997) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Citation

Frederick G. Watson
"Waveguide spectrographs for astronomy?", Proc. SPIE 2871, Optical Telescopes of Today and Tomorrow, 1373 (March 21, 1997); doi:10.1117/12.269030; http://dx.doi.org/10.1117/12.269030


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