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Proceedings Paper

Scanning confocal microscope for precise measurement of optical fiber diameter
Author(s): Steven E. Mechels; Matthew Young
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Paper Abstract

We have constructed and evaluated a scanning confocal microscope for the precise measurement of optical fiber cladding diameter. The system measures the fiber endface directly and differs from conventional microscopes in that there is no systematic error due to partial coherence. The results obtained with the scanning confocal microscope are checked by comparison with those obtained from a contact micrometer and by measuring a chrome-on- glass standard reference material provided by NIST, Gaithersburg, Maryland. Fiber diameters can be measured with a random uncertainty of 40 nm and a systematic error estimated to be 40 nm.

Paper Details

Date Published: 1 February 1992
PDF: 7 pages
Proc. SPIE 1556, Scanning Microscopy Instrumentation, (1 February 1992); doi: 10.1117/12.134899
Show Author Affiliations
Steven E. Mechels, National Institute of Standards and Technology (United States)
Matthew Young, National Institute of Standards and Technology (United States)

Published in SPIE Proceedings Vol. 1556:
Scanning Microscopy Instrumentation
Gordon S. Kino, Editor(s)

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