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Optical Engineering

Optical fiber alignment using cleaved-edge diffracted light
Author(s): Louis Claude Brun; Patrick Bergeron; Michel A. Duguay; Francois Ouellette; Michel Tetu
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Paper Abstract

We describe a simple technique for aligning optical fibers prior to fusion splicing. The technique relies on the fact that well-cleaved fiber ends have extremely sharp edges. By making the narrow pencil of light emerging from one fiber scan laterally over the entrance face of a second fiber, and by monitoring the light diffracted past its sharp edges, we can locate precisely the geometric center of the output fiber. With this technique, we have aligned fiber cores with a mean lateral offset of 0.81 μm, the major part of this offset caused by the eccentricity of the core relative to the cladding's circular perimeter.

Paper Details

Date Published: 1 August 1993
PDF: 4 pages
Opt. Eng. 32(8) doi: 10.1117/12.145329
Published in: Optical Engineering Volume 32, Issue 8
Show Author Affiliations
Louis Claude Brun, Laval Univ. (Canada)
Patrick Bergeron, Univ. of Laval (Canada)
Michel A. Duguay, Laval Univ. (Canada)
Francois Ouellette, Univ. Laval (Canada)
Michel Tetu, Univ. Laval (Canada)


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