We have developed three instruments for accurate measurement of optieal fiber cladding diameter: a contact micrometer, a scanning confocal microscope, and a white-light interference microscope. Each instrument has an estimated uncertainty (3 standard deviations) of 50 nm or less, but the confocal microscope may display a 20 nm systematic error as well. The micrometer is used to generate Standard Reference Materials that are commercially available.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4909178 | PMC |
| http://dx.doi.org/10.6028/jres.098.015 | DOI Listing |
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