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实验设计了两个光纤环,减小光纤环1的半径使光纤发生宏弯损耗,获得两光斑。此时再压缩光纤环2,发现两光斑整体随光纤环2的受压位移在一定受压范围内表现出了很好的旋转性。通过两光斑旋转角度随光纤环2受压位移的一一对应关系,经实验数据处理获得了光斑角度与线圈受压位移存在一定范围的线性关系。同时实验分析了光纤环2的直径和光纤环2的紧绕圈数对压缩位移灵敏度的影响。
Experimental design of the two optical fiber ring, reducing the radius of the fiber ring 1 so that the macro-bending loss occurs optical fiber to obtain two spots. In this case, the optical fiber ring 2 is further compressed, and it is found that the two optical spots as a whole exhibit a good rotation with the pressure displacement of the optical fiber ring 2 under a certain pressure range. Through the one-to-one correspondence between the rotation angles of the two light spots and the pressure displacement of the fiber ring 2, a linear relationship exists between the spot angle and the pressure displacement of the coil. At the same time, the influence of the diameter of the fiber ring 2 and the number of turns of the fiber ring 2 on the compression displacement sensitivity was analyzed experimentally.