半导体光电, 2020, 41 (6): 845, 网络出版: 2021-01-22
光纤研磨纸粒度对侧边研磨塑料光纤传感器灵敏度的影响
Influence of The Particle Size of Optical Fiber Grinding Paper on The Sensitivity of Edgelapping Plastic Optical Fiber Sensor
塑料光纤 倏逝波 传感器 表面粗糙度 光传输 灵敏度 plastic optical fiber evanescent wave sensor surface roughness light transmission sensitivity
摘要
为了提高侧边研磨型(D形)塑料光纤倏逝波传感器的灵敏度,采用不同粒度的光纤研磨纸对塑料裸光纤进行侧边研磨,制备了不同直径及不同表面粗糙度的D形塑料光纤倏逝波传感器。实验观测了D区表面形貌、D区直径与表面粗粗度对传感器光传输性能及灵敏度的影响。实验研究发现:D形敏感区域直径及表面粗糙度对传感器光传输及灵敏度影响显著;传感器灵敏度随着D区直径的减小先增大后减小,当D区直径为1200μm时,传感器对葡萄糖溶液的响应灵敏度达到最大值:-0.0032(mg/L)-1;当采用粒度为9μm的光纤研磨纸对光纤进行研磨时,传感器的灵敏度将进一步提升至-0.0045(mg/L)-1,是未经研磨塑料光纤传感器灵敏度的11.25倍。
Abstract
In order to improve the sensitivity of the edgelapping (Dshaped) plastic optical fiber (POF) evanescent wave sensor, the optical fiber grinding paper with different particle diameters was used to grind the uncoated POFs to prepare Dshaped POF evanescent wave sensors with different diameters and different surface roughness. The surface morphology of the Dshaped region was checked, and the effects of the diameter and surface roughness of the Dshaped region on the light transmission and sensitivity of the sensors were investigated experimentally. Experimental results indicate that the diameter and surface roughness of the Dshaped sensitive region have a significant effect on the light transmission and sensitivity of the sensor. The sensitivity increases first and then decreases as the diameter of the Dshaped region decreases, and when the diameter is 1200μm, the sensors response sensitivity to glucose solution reaches a maximum of -0.0032(mg/L)-1; when the Dshaped region is polished with the fiber optic paper with the particle size of 9μm, the sensors sensitivity will be further improved to -0.0045(mg/L)-1, which is 11.25 times of that of POF sensor without grinding.
冯利民, 巫涛江, 赵杰, 吴德操. 光纤研磨纸粒度对侧边研磨塑料光纤传感器灵敏度的影响[J]. 半导体光电, 2020, 41(6): 845. FENG Limin, WU Taojiang, ZHAO Jie, WU Dechao. Influence of The Particle Size of Optical Fiber Grinding Paper on The Sensitivity of Edgelapping Plastic Optical Fiber Sensor[J]. Semiconductor Optoelectronics, 2020, 41(6): 845.