Analysis of changes in optical fibers during arc-fusion splicing by use of quantitative phase imaging

A non‐interferometric imaging technique in conjunction with Abel inversion is used to directly and quantitatively examine the changes in optical fibers due to the heating produced during arc‐fusion splicing as a function of fusion arc parameters. Phase images in the vicinity of a fusion splice are o...

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Bibliographic Details
Published in:Microscopy research and technique 2006-11, Vol.69 (11), p.847-851
Main Authors: Dragomir, N.M., Ampen-Lassen, E., Baxter, G.W., Pace, P., Huntington, S.T., Farrell, P.M., Stevenson, A.J., Roberts, A.
Format: Article
Language:English
Subjects:
arc-fusion spliced fibers
index modification
microscopy
optical fiber fabrication
optical fiber testing
phase measurement
refractive-index
splicing
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Summary:A non‐interferometric imaging technique in conjunction with Abel inversion is used to directly and quantitatively examine the changes in optical fibers due to the heating produced during arc‐fusion splicing as a function of fusion arc parameters. Phase images in the vicinity of a fusion splice are obtained using Quantitative Phase Microscopy, allowing the refractive‐index change to be reconstructed with high spatial resolution. This simple, nondestructive method confirms that, for a fixed arc current, while the fusion time increases, the refractive‐index of both fiber cores within the fusion region decreases in magnitude, the core region broadens, and the axial gradient decreases. Microsc. Res. Tech., 2006. © 2006 Wiley‐Liss, Inc.
ISSN:1059-910X
1097-0029
DOI:10.1002/jemt.20357