Fiber sphere-embedded long-period fiber grating for curvature measurement with high sensitivity
作者: Dewen HouJuan KangXiaolei WangQian ZhangXiaoying ZhouChunLiu ZhaoXinyong Dong
作者单位: 1China Jiliang University
刊名: Optical Engineering, 2018, Vol.57 (4), pp.046101-046101
来源数据库: SPIE-the International Society for Optical Engineering
DOI: 10.1117/1.OE.57.4.046101
关键词: Curvature measurementEmbedded fiber sphereLong-period fiber gratingHigh sensitivity
原始语种摘要: A fiber sphere-embedded long-period fiber grating (LPFG) sensor has been proposed and fabricated for curvature measurement with high sensitivity. Compared with the normal LPFG, the embedded fiber sphere excites cladding modes and two dips of the output spectrum have been observed. The curvature measurement can be realized by monitoring the shift of the two dips. Experimental results show that the highest curvature sensitivity is up to −104.642 nm/m − 1 with the curvature ranging from 0 to 0.71 m − 1. The temperature response of the sensor has also been studied and a quadratic linear relationship between the dip shift and the temperature has been observed. The highest temperature sensitivity is 0.36 nm / ° C with the temperature range between 20°C and 90°C.
全文获取路径: SPIE  (合作)

  • curvature 曲率
  • embedded 嵌入
  • grating 筛分
  • sensitivity 灵敏度
  • sphere 
  • fiber 纤维
  • measurement 测量
  • period 
  • temperature 温度
  • highest 最高的