Optical fiber coating concentricity: measurement and analysis.

Area of Science:

• Optics and Photonics
• Materials Science

Background:

• Optical fiber integrity is crucial for signal transmission.
• Eccentricity in fiber optic cable jacketing can impact performance and durability.
• Precise measurement of jacket eccentricity is essential for quality control.

Purpose of the Study:

• To develop and validate a non-destructive method for assessing optical fiber jacket eccentricity.
• To utilize laser light backscattering for quantitative eccentricity measurements.
• To demonstrate the sensitivity of the technique for detecting small offsets.

Main Methods:

• Employing laser light incident perpendicular to the optical fiber axis.
• Analyzing the backscattered light pattern.
• Applying ray optics principles for analytical modeling.
• Conducting experimental validation of the analytical model.

Main Results:

• The backscattering method effectively quantifies plastic jacket eccentricity.
• Analytical predictions based on ray optics show excellent agreement with experimental data.
• The technique demonstrates a detection limit for core-to-jacket offsets on the order of 1 micrometer.

Conclusions:

• Laser backscattering provides a highly sensitive and accurate method for measuring optical fiber jacket eccentricity.
• The validated analytical model offers a reliable tool for predicting and understanding the backscattering phenomenon.
• This technique is suitable for quality control and characterizing fiber optic components.