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Single-mode fiber diameter measurements using Lloyd's mirror.

K H Wanser, J A Anderson

|August 12, 2010

Summary

A new interferometric technique precisely measures fiber outside diameter to below 1 micrometer. This method uses fringe patterns from fiber-to-surface contact for accurate dimensional analysis.

Area of Science:

Optics and Photonics
Metrology
Materials Science

Background:

Accurate measurement of fiber dimensions is crucial for telecommunications and advanced material applications.
Existing methods for measuring fiber outside diameter may lack the required precision for certain high-tech industries.

Purpose of the Study:

To propose and demonstrate a novel interferometric method for highly accurate fiber outside diameter measurement.
To achieve measurement uncertainty below 1 micrometer.

Main Methods:

Utilizing an interferometric approach to analyze fringe patterns.
Placing the optical fiber in direct contact with a reflecting surface to generate interference fringes.
Developing a system capable of interpreting these fringe patterns for dimensional calculation.

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Main Results:

Experimental demonstration of the proposed interferometric method.
Achieved measurement uncertainty for fiber outside diameter of less than 1 micrometer.
Validation of the technique's precision and reliability.

Conclusions:

The developed interferometric method offers a precise and reliable way to measure fiber outside diameter.
This technique meets the stringent uncertainty requirements (<1 micrometer) for advanced applications.
The method's reliance on fringe pattern analysis from surface contact provides a robust measurement solution.