Dragomir NM, Ampen-Lassen E, Baxter GW, Pace P, Huntington ST, Farrell PM, Stevenson AJ, Roberts A. Analysis of changes in optical fibers during arc-fusion splicing by use of quantitative phase imaging.
Microsc Res Tech 2006;
69:847-51. [PMID:
17029239 DOI:
10.1002/jemt.20357]
[Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
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.
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