In this work, we propose a polarization-maintaining, weakly coupled few-mode fiber with a uniform doping concentration, designed via a particle swarm optimization algorithm and a discrete point configuration method. The design features a circular central air hole and an irregular doped boundary. It achieves this not by eliminating birefringence, but by having a very strong, well-defined internal birefringence. Compared with other types of gyroscopes, the optical fiber gyroscope has many advantages such as short startup time, simple structure, light weight, no moving parts, and strong. Polarization maintaining fiber optic sensors have emerged as a promising technology for structural health monitoring, particularly in the context of guided wave-based integrity assessment. These sensors offer distinct advantages over conventional approaches due to their inherent immunity to. FA Intelligent Polarization Maintaining Fiber Alignment System,PMF-421P-FA16-AT Product Desperation: PMF-421P-FA16-AT Intelligent PM fiber alignment system designed by Shenzhen Neofibo, suitable for FA fiber array polarization maintaining alignment use, accurate measurement of PM fiber alignment.
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