全光纤化CTD温盐增敏及长期稳定性研究

项目名称： 全光纤化CTD温盐增敏及长期稳定性研究

项目编号： No.41276094

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 天文学、地球科学

项目作者： 王永杰

作者单位： 中国科学院半导体研究所

项目金额： 72万元

中文摘要： 光纤传感技术在海洋监测中有本征绝缘、灵敏度高、成本低廉、组网成阵方便、原位实时测量、湿端无电无功耗等优势，国内外已开展大量研究工作。课题组在光纤光栅温盐深(CTD)研究工作取得阶段性成果，青岛外场比对实测和第三方计量测试表明温度精度为0.01℃,压力精度优于0.1%，均超GB/T23246-2009二级、接近一级标准，盐度实验室测试达708pm/1%,接近二级。 为达到国标一级要求，拟开展核心元器件长周期光纤光栅（LPG）的温度、盐度增敏及水中浸泡时的长期稳定性研究：1)基于金属屏蔽层的LPG温度传感器增敏及封装技术；2)提出并研究新型基于表面芯的LPG盐度传感器；3)首次发现并建立LPG水中"再老化"模型，推算并改进其长期稳定性。 上述工作鲜见报道，结合解调装备小型化、自容式改装，进行2次以上海上比对实测，为尽早开发出符合一级标准的低成本、实用化、多形式的全光纤CTD奠定基础。

中文关键词： 光纤光栅；温度传感器；压力传感器；盐度传感器；解调仪

英文摘要： Optic fiber sensor technique has many advantages in the ocean monitoring, including intrinsic insulation, high sensitivity, low-cost, easily assembled array and net, in situ real-time measurement and none power dissipation at wet-end. Researchers have performed a large number of researches and studies at home and abroad. Our group focusing on the measurement of conductivity, temperature and depth (CTD) based on optic fiber grating had got the stage achievement. The out-side comparative real-time experiment in Qingdao and the third-party participated metering test reveal that the precision of temperature is 0.01℃ and the pressure accuracy is better than 0.1%, both of them overtake the secondary standard of GB/T23246-2009, moreover, close to the primary standard, and the precision of salinity in laboratory has reached 708 pm/1% closely to the secondary standard. In order to satisfy the requirement of the primary national standard, our group will conduct the research and the study of enhancement of sensitivity of temperature and salinity of the core component, the long period grating (LPG), and the long term stability of the LPG sensor immersed in water:1) based on the metal shielded layer the technique of package and sensitivity enhancement of the LPG temperature sensor; 2) to study and come up with a new surface

英文关键词： fiber grating；temperature sensor；pressure sensor；salinity sensor；demodulation instrument