Double eccentric connectors for optical fibers

Area of Science:

• Photonics and Optical Engineering
• Telecommunications Technology

Background:

• Optical fiber connectors are crucial for reliable data transmission.
• Minimizing connection loss is essential for high-performance fiber optic networks.
• Existing connectors face challenges with core displacement and fiber axis tilt.

Purpose of the Study:

• To develop and evaluate an optical fiber connector with a novel double eccentric adjusting mechanism.
• To quantify the impact of various impairment factors on connection loss.
• To improve the average connection loss and reduce signal reflection.

Main Methods:

• Implementation of a double eccentric tube adjusting mechanism in an optical fiber connector.
• Evaluation of tolerable impairment values for factors causing connection loss.
• Quantitative analysis of connection loss attributed to core displacement and fiber axis tilt.
• Integration of a transparent thin film to reduce reflection.

Main Results:

• Achieved an average connection loss of 0.57 dB between step index multimode fibers without matching material.
• Identified mutual core displacement and fiber axis tilt as primary contributors to connection loss.
• Reduced signal reflection to approximately -25 dB using a transparent thin film.
• Improved the average connection loss to about 0.20 dB with the thin film integration.

Conclusions:

• The double eccentric adjusting mechanism effectively minimizes optical fiber connection loss.
• Quantitative analysis provides insights into factors affecting connector performance.
• The integration of a transparent thin film further enhances connector efficiency by reducing reflection.