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为了研究真空老化处理对塑料光纤传感器性能的影响,首先将不同直径光纤部分区域保护层去除后的裸光纤加工为锲形作为传感器敏感区;其次对敏感区进行真空老化处理;然后研究不同直径锲形光纤经真空老化后光纤直径、宽度及重量的变化信息,以及老化处理对传感器光传输与灵敏度的影响。实验结果表明:在真空中105℃老化处理30 min后,当光纤直径不小于2 mm时,老化处后传感器对短波长光束传输能力增强,传感器灵敏度增加;当光纤直径小于2 mm时,老化处理后传感器光传输性能及灵敏度降低,且传感器灵敏度的衰减量随光纤直径的越小而越大。
In order to study the effect of vacuum aging on the performance of plastic optical fiber sensor, the bare optical fibers with different diameters of the optical fiber are removed and processed into wedge shape as sensor-sensitive area. Secondly, the sensitive area is vacuum-aged, and then the different-diameter wedges Shaped fiber after vacuum aging fiber diameter, width and weight changes, as well as the aging of the sensor light transmission and sensitivity. The experimental results show that when the diameter of the optical fiber is not less than 2 mm, the sensor’s ability to transmit short-wavelength light beam increases and the sensitivity of the sensor increases when the diameter of the optical fiber is not less than 2 mm after aging at 105 ℃ in vacuum for 30 min. When the optical fiber diameter is less than 2 mm, After the sensor optical transmission performance and sensitivity to reduce, and the sensitivity of the sensor attenuation with the smaller the diameter of the fiber and the greater.