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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 13, Iss. 9 — May. 2, 2005
  • pp: 3277–3282

Refractive index profiling of axially symmetric optical fibers: a new technique

E. Ampem-Lassen, S. T. Huntington, N. M. Dragomir, K. A. Nugent, and A. Roberts  »View Author Affiliations

Optics Express, Vol. 13, Issue 9, pp. 3277-3282 (2005)

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We present a new technique for determining the refractive index profiles of axially symmetric optical fibers based on imaging phase gradients introduced into a transmitted optical field by a fiber sample. An image of the phase gradients within the field is obtained using a new non-interferometric technique based on bright field microscopy. This provides sufficient information to reconstruct the refractive index profile using the inverse Abel transform. The technique is robust, rapid and possesses high spatial resolution and we demonstrate its application to the reconstruction of the refractive index profiles of a single-mode and a multimode optical fiber.

© 2005 Optical Society of America

OCIS Codes
(060.2270) Fiber optics and optical communications : Fiber characterization
(060.2300) Fiber optics and optical communications : Fiber measurements
(110.0180) Imaging systems : Microscopy
(120.5050) Instrumentation, measurement, and metrology : Phase measurement

ToC Category:
Research Papers

Original Manuscript: March 15, 2005
Revised Manuscript: April 14, 2005
Published: May 2, 2005

E. Ampem-Lassen, S. T. Huntington, N. M. Dragomir, K. A. Nugent, and A. Roberts, "Refractive index profiling of axially symmetric optical fibers: a new technique," Opt. Express 13, 3277-3282 (2005)

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