Splice-loss evaluation for single-mode graded-index fibers

Area of Science:

• Optics
• Fiber Optics
• Photonics

Background:

• Accurate evaluation of splice loss is crucial for optical fiber communication systems.
• Existing methods, like the Gaussian approximation, may lack sufficient precision for certain fiber types.

Purpose of the Study:

• To develop highly accurate and simple methods for evaluating splice loss in single-mode graded-index fibers.
• To provide analytical forms for splice loss calculations considering angular and transverse offsets.

Main Methods:

• Development of new, accurate approximations for the modal field of single-mode graded-index fibers.
• Derivation of analytical expressions for splice loss based on these modal field approximations.
• Comparative analysis against the Gaussian approximation method.

Main Results:

• The proposed methods provide highly accurate evaluations of splice loss.
• Analytical forms for splice loss due to angular and transverse offsets are presented and are easy to compute.
• The new methods demonstrate superior accuracy compared to the Gaussian approximation.

Conclusions:

• The developed methods offer a more precise and practical approach to assessing splice loss in optical fibers.
• These findings can contribute to improved performance and reliability in fiber optic communication systems.