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长周期光纤光栅的制备与传感特性研究 被引量:1

Study on Preparation and Sensing Characteristics of Long Period Fiber Grating
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摘要 光纤传感器具有对折射率敏感、体积小、易集成等优点,因为其透射光谱的谐振峰和幅值对外界环境非常敏感,所以在传感领域备受关注。在单模光纤中制备了长周期光纤光栅,通过控制熔接机电极的放电功率、放电时间和放电次数来控制光栅深度。通过实验可知:随着溶液折射率的增加,相应的波长出现蓝移,折射率传感灵敏度为-84.4 nm/RIU;随着环境温度的升高,相应的波长出现红移,温度传感灵敏度为78.17 pm/℃;随着外加应力增加,相应的波长出现蓝移,应力传感灵敏度为-5.72 pm/με。长周期光纤光栅作为一种新型的光学器件,在结构的微型化与功能的多样性上发挥了重要的作用。 Optical fiber sensors are sensitive to refractive index,small in size and easy to be integrated.Because the resonance peak and amplitude of the transmission spectrum are very sensitive to the external environment,they have attracted much attention in the sensing field.In this experiment,a long period fiber grating(LPFG)was prepared in a single-mode fiber.According to the experiment,with the increase of the refractive index of the solution,the corresponding wavelength appears blue shift and the refractive index sensitivity is-84.4 nm/RIU.With the increase of the ambient temperature,the corresponding wavelength appears red shift and the temperature sensitivity is 78.17 pm/℃.With the increase of the applied stress,the corresponding wavelength appears blue shift and the stress sensitivity is-5.72 pm/με.As a new optical device,LPFG plays an important role in the miniaturization of structures and the diversity of functions.
作者 李厚昶 廖云程 刘娟 刘彬 谢成峰 万生鹏 吴强 LI Hou-chang;LIAO Yun-cheng;LIU Juan;LIU Bin;XIE Cheng-feng;WAN Sheng-peng;WU Qiang(Key Laboratory of Nondestructive Testing(Ministry of Education),Nanchang Hangkong University,Nanchang 330063)
出处 《南昌航空大学学报(自然科学版)》 CAS 2020年第3期88-93,99,共7页 Journal of Nanchang Hangkong University(Natural Sciences)
基金 国家自然科学基金(5186504) 江西省自然科学基金重点(20192ACBL21051) 无损检测技术教育部重点实验室开放基金(EW201908083)
关键词 长周期光纤光栅 光纤传感 long period fiber grating arc dischage optical fiber sensing
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