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Applied Optics

Applied Optics


  • Vol. 39, Iss. 33 — Nov. 20, 2000
  • pp: 6128–6135

Imaging of free-space interference patterns used to manufacture fiber Bragg gratings

John D. Mills, Chris W. J. Hillman, Barry H. Blott, and William S. Brocklesby  »View Author Affiliations

Applied Optics, Vol. 39, Issue 33, pp. 6128-6135 (2000)

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A technologically important use of the free-space interference patterns formed by phase gratings is in the creation of the refractive-index variation along optical fiber Bragg gratings. The patterns can be imaged directly by use of a tapered optical fiber tip, which acts as a local probe of the optical field. We present measurements of these patterns under varying conditions and compare them with theoretical predictions. In discussing the results within the context of fiber grating manufacture, we also demonstrate the effects of incident-beam misalignment and wave-front curvature.

© 2000 Optical Society of America

OCIS Codes
(050.1950) Diffraction and gratings : Diffraction gratings
(050.1960) Diffraction and gratings : Diffraction theory
(050.5080) Diffraction and gratings : Phase shift
(060.2330) Fiber optics and optical communications : Fiber optics communications
(070.6760) Fourier optics and signal processing : Talbot and self-imaging effects
(110.0180) Imaging systems : Microscopy

Original Manuscript: November 16, 1999
Revised Manuscript: August 4, 2000
Published: November 20, 2000

John D. Mills, Chris W. J. Hillman, Barry H. Blott, and William S. Brocklesby, "Imaging of free-space interference patterns used to manufacture fiber Bragg gratings," Appl. Opt. 39, 6128-6135 (2000)

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