光纤U型锥半径对光谱质量影响的理论仿真

Theoretical Simulation of the Influence of Fiber U-Shaped Taper Radius of Curvature on Spectral Quality

摘要: U型光纤锥可以探测外界目标参量，目前在国防安全、医疗健康、工农生产等领域有着重要的应用前景，其相比未拉锥的U型光纤结构而言，探测灵敏度显著提升。半径为影响U型光纤锥结构特性的一个重要参量，因此，本文利用Rsoft软件仿真U型光纤锥的半径对光谱质量的影响，光纤锥的长度为628 μm，得到U型光纤锥的结构内部光路分布规律及光谱特征。最终，得出半径在83.3 μm~1216 μm范围内时，半径是1216 μm的光谱质量最好，具有最优的探测效果。

Abstract: U-type fiber taper can detect external target parameters. At present, it has an important application prospect in the fields of national defense security, medical health, industrial and agricultural production and other fields. Compared with the U-type fiber structure without taper, its detection sensitivity is significantly improved. The radius of curvature is an important parameter affecting the structural characteristics of U-type fiber taper. Therefore, this paper uses Rsoft software to simulate the influence of the radius of curvature U-type fiber taper on the spectral quality. The length of the fiber taper is 628 μm, and the internal light path distribution law and spectral characteristics of U-shaped fiber taper are obtained. Finally, it is concluded that when the radius of curvature is within 83.3 μm~1216 μm, the curvature radius of 1216 μm has the best spectral quality and the optimal detection effect.