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Applied Physics A

, Volume 33, Issue 3, pp 179–180 | Cite as

Resolving power of gratings in planar multimode waveguides

  • A. Reule
Contributed Papers

Abstract

A multimode planar grating spectrograph focuses, into the same point, all modes with equal propagation constants. Guided waves with equal propagation constants may have different free-space wavelengths within a bandwidth determined by the numerical aperture of this structure. The consequences for the spectral resolution of a multimode planar grating are quantitatively discussed.

PACS

42.80 S 42.80 F 42.30 

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Copyright information

© Springer-Verlag 1984

Authors and Affiliations

  • A. Reule
    • 1
  1. 1.Carl Zeiss, ZBFOberkochenGermany

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