详细分析了这种传感器的特性，指出对于特定的外界折射率范围，需设计纤芯折射率、光纤半径、弯曲半径三个参量的最佳组合。

The characteristics of this sensor is analysed. It is concluded that for a certain refractive index range, the index of fibre core, the radius of core and bending radius need to be optimized.

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模具采用T形滑座与弯曲角两边的压板调节，从而达到在一定范围内调节弯曲角度的目的，弯曲半径的调节主要是通过更换弯曲半径的调节轴来实现。

In order to adjust the bending Angle, the t type slide seat and bending press plate were used. The adjusting of bending radius was implemented by replacing the adjusting axis of bending radius.

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