碲酸盐玻璃及光纤的传感应用研究进展

Progress on Tellurite Glass and Its Optical Fiber in Sensing Application

碲酸盐玻璃具有较宽传输窗口、低转变温度、高非线性折射率及良好的稀土溶解能力,与其他玻璃体系相比在光纤激光器、放大器、非线性效应以及生化传感等领域表现出明显的优势。首先介绍了碲酸盐玻璃组分和制造工艺;其次分析了玻璃的热稳定性、传输限制、温黏特性及机械性能;然后总结了阶跃型和微结构型光纤预制棒的制备方法,以及碲酸盐光纤的拉制工艺;最后按照温度、磁场、应变、溶液折射率以及气体浓度等待测量分类,综述了碲酸盐玻璃及光纤在生物化学、医疗设备和电力系统等领域的传感应用,并对其应用前景进行了展望。

Tellurite glass can be used in fiber lasers,amplifiers,nonlinear effects and biochemical sensors due to its excellent features of wide transmission window,low transition temperature,high nonlinear refractive index and good rare-earth solubility.In this review,the composition and manufacturing process of tellurite glass were introduced.The thermal stability,optical transmission limit,temperature-viscosity characteristics and mechanical properties were analyzed.The preparation methods of step-index and microstructure optical fiber preforms and the drawing process of tellurite optical fibers were summarized.According to the measurement classification of temperature,magnetic field,strain,solution refractive index and gas concentration,the sensing applications of tellurite glass and its optical fibers in biochemistry,medical equipment and power system were represented,and their application prospects were also given.