Refractive-index profiling of optical fibers with axial symmetry by use of quantitative phase microscopy.
The application of quantitative phase microscopy to refractive-index profiling of optical fibers is demonstrated. Phase images of axially symmetric optical fibers immersed in index-matching fluid are obtained, and the inverse Abel transform is used to obtain the radial refractive-index profile. This technique is straightforward, nondestructive, repeatable, and accurate. Excellent agreement, to within approximately 0.0005, between this method and the index profile obtained with a commercial profiler is obtained.
Roberts
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A
Ampem-Lassen
E
E
Barty
A
A
Nugent
K A
KA
Baxter
G W
GW
Dragomir
N M
NM
Huntington
S T
ST