光纤弯曲损耗特性的理论研究

Theoretical Study on Bending Loss Characteristics of Optical Fiber

文章研究了高功率下、不同光波下弯曲损耗与弯曲半径的关系.通过数值计算得出,在平面光波和高斯光束下,随着弯曲半径的增大弯曲损耗减小,即在相同的高功率下输出功率增大;在相同弯曲半径下,高斯光束输出功率要大于平面光束的输出功率.研究结果对光纤制备时减小输出损耗具有理论指导作用.

The relationship between bending loss and bending radius under high power and different light waves is studied.Through numerical calculation we find that under the plane waves and Gaussian beam,as the bending radius increases,the bending loss decreases,that is,the output power increases at the same high power.Under the same bending radius,the output power of Gaussian beam is larger than that of plane beam.The research results have a theoretical guidance for reducing the output loss in optical fiber fabrication.