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Optics Letters

Optics Letters


  • Vol. 29, Iss. 14 — Jul. 15, 2004
  • pp: 1614–1616

Tilted superstructure fiber grating used as a Fourier-transform spectrometer

S. Wielandy and S. C. Dunn  »View Author Affiliations

Optics Letters, Vol. 29, Issue 14, pp. 1614-1616 (2004)

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We propose and demonstrate a new method for fabricating a compact all-fiber spectrometer by using a tilted superstructure fiber grating to couple light out of a fiber core and produce an interference pattern in the near field. The Fourier transform of the interference pattern serves as a direct measurement of the optical input spectrum, and the superstructure grating design offers several degrees of freedom that permit control over the resolution and bandwidth of the spectrometer. For single-wavelength operation, the proposed scheme offers the possibility of making wavelength measurements with picometer-level precision over a broad 80-nm wavelength range while simultaneously providing coarser precision over a 160-nm range.

© 2004 Optical Society of America

OCIS Codes
(050.2770) Diffraction and gratings : Gratings
(060.2340) Fiber optics and optical communications : Fiber optics components
(120.6200) Instrumentation, measurement, and metrology : Spectrometers and spectroscopic instrumentation

S. Wielandy and S. C. Dunn, "Tilted superstructure fiber grating used as a Fourier-transform spectrometer," Opt. Lett. 29, 1614-1616 (2004)

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