# Parameter Self-Adjusting Single-Mode Fiber Nutation Coupling Algorithm Based on Fuzzy Control

## TL;DR

This paper introduces a new fiber coupling algorithm using fuzzy control to improve optical communication efficiency.

## Contribution

A novel fuzzy control-based algorithm that self-adjusts parameters for improved fiber coupling performance.

## Key findings

- The proposed algorithm has a correction range five times greater than traditional methods under static conditions.
- Dynamic disturbance suppression bandwidth reaches 8 Hz, ten times higher than traditional algorithms.
- Simulation and experiments confirm improved coupling efficiency, accuracy, and speed.

## Abstract

The free-space optical communication fiber coupling system requires improved coupling efficiency through the fiber nutation algorithm. However, traditional fiber nutation algorithms suffer from issues such as fixed parameters and limited correction range. To address these challenges, a parameter self-adjusting single-mode fiber nutation coupling algorithm based on fuzzy control is proposed. Firstly, by leveraging the principles of fuzzy control and analyzing the influence of nutation parameters, a fuzzy controller with power and power change rate as input and nutation parameter as output is designed. Subsequently, we simulate and evaluate the static and dynamic performance of the fuzzy controller. The simulation results indicate that our algorithm outperforms traditional coupling algorithms in terms of coupling efficiency, accuracy, and speed. Finally, experimental results confirm the static and dynamic performance improvements of the parameter self-adjusting single-mode fiber nutation coupling algorithm based on fuzzy control. Specifically, under static conditions, the correction range of the proposed algorithm is approximately five times greater than that of the traditional algorithm. Under dynamic conditions, the disturbance suppression bandwidth increases to 8 Hz, nearly ten times greater than that of the traditional algorithm, significantly enhancing fiber nutation performance.