提出了一种基于光纤超声传感技术的岩石含水率检测新方法。在实验中，以压电换能器（PZT）发出的1 MHz超声波作为声源，采用超声波透射法，通过刻写在细芯光纤中的一对光纤光栅检测岩石的超声波信息（包括时域以及频域的结果），并与相同条件下的PZT接收结果进行比较。随着岩石含水率的增加，光纤传感器表现出与PZT相似的响应趋势，且测得的含水率绝对偏差较小，充分证明了光纤探测岩石含水信息的可行性和优越性。

Singlet oxygen (¹O₂) is the main cytotoxic substance in Type II photodynamic therapy (PDT). The luminescence of ¹O₂ at 1270nm is extremely weak with a low quantum yield, making the direct detection of ¹O₂ at 1270nm very challenging. In this study, a set of highly sensitive optical fiber detection system is built up to detect the luminescence of photosensitized ¹O₂. We use this system to test the luminescence characteristics of ¹O₂ in pig skin tissue ex vivo and mouse auricle skin in vivo. The experimental results show that the designed system can quantitatively detect photosensitized ¹O₂ luminescence. The ¹O₂ luminescence signal at 1270nm is successfully detected in pig skin ex vivo. Compared with RB in an aqueous solution, the lifetime of ¹O₂ increases to 17.4±1.2μs in pig skin tissue ex vivo. Experiments on living mice suggest that an enhancement of ¹O₂ intensity with the increase of the TMPyP concentration. When the dose is 25mg/kg, the vasoconstriction can reach more than 80%. The results of this study hold the potential application for clinical PDT dose monitoring using an optical fiber detection system.Singlet oxygen (¹O₂) is the main cytotoxic substance in Type II photodynamic therapy (PDT). The luminescence of ¹O₂ at 1270nm is extremely weak with a low quantum yield, making the direct detection of ¹O₂ at 1270nm very challenging. In this study, a set of highly sensitive optical fiber detection system is built up to detect the luminescence of photosensitized ¹O₂. We use this system to test the luminescence characteristics of ¹O₂ in pig skin tissue ex vivo and mouse auricle skin in vivo. The experimental results show that the designed system can quantitatively detect photosensitized ¹O₂ luminescence. The ¹O₂ luminescence signal at 1270nm is successfully detected in pig skin ex vivo. Compared with RB in an aqueous solution, the lifetime of ¹O₂ increases to 17.4±1.2μs in pig skin tissue ex vivo. Experiments on living mice suggest that an enhancement of ¹O₂ intensity with the increase of the TMPyP concentration. When the dose is 25mg/kg, the vasoconstriction can reach more than 80%. The results of this study hold the potential application for clinical PDT dose monitoring using an optical fiber detection system.

为了研究近红外光在皮肤组织中的传播, 建立了人体皮肤组织模型, 包括不同入射波长下表皮、真皮、皮下组织的吸收系数、散射系数、折射率和各向异性因子.结合皮肤组织的光学性质, 采用蒙特卡罗方法分析了1 000~1 900 nm范围内, 光源-探测距离不同时近红外光在皮肤组织中的传播过程和分布特点.结果表明：光子运动路径长度和穿透深度均随光源-探测距离的增加而变大, 而漫反射归一化能量随光源-探测距离的增加而变小.选取光源-探测距离为0.45 mm, 当入射波长为1 550 nm时, 光子运动路径长度为1.806 mm, 穿透深度为0.467 mm, 漫反射光归一化能量为0.001 85.根据蒙特卡罗模拟结果, 分析和设计了一种光纤探测结构, 这种分叉光纤束由18根光源光纤和4根探测光纤构成, 每根光纤间距均为0.45 mm并且刚好紧凑相邻.最后, 仿真计算了光纤收集到的漫反射光能量及照度分布.假设入射光功率为1 W, 则探测器接收的漫反射光功率为0.598 mW, 这为便携式检测光谱仪器的设计提供了参考.

为实现微型化、抗电磁干扰、可长时间工作和可远距离传输的加速度传感器，提出了一种基于微机电系统(MEMS)非对称扭镜结构的光纤加速度计设计方案，并利用对角度变化非常敏感的双光纤准直器对扭镜的扭转角度变化进行检测。MEMS光纤加速度计由MEMS非对称扭镜结构、驱动电极和双光纤准直器等组成。分析了器件的加速度敏感原理和光纤检测原理，介绍了器件综合设计考虑，并给出了器件的结构参数。利用MEMS加工技术成功制作了MEMS光纤加速度计样品。对加速度计进行了实验测试，加速度计的输出实验值与理论值吻合。测试结果表明，该加速度计量程为±2g，带宽为600 Hz，分辨率优于10-4g,且具有良好的线性度和重复性。该 MEMS光纤加速度计将MEMS敏感结构与光纤检测相结合，兼备了两者的优点，结构紧凑、制作工艺简单。

提出了一种基于微机电系统(MEMS)扭镜结构的光纤磁场传感器, 并利用对角度变化非常敏感的双光纤准直器对扭镜的扭转角度进行了检测。该MEMS光纤磁传感器由MEMS扭镜结构、磁性敏感薄膜和双光纤准直器组成。文中分析了器件的磁敏感原理和光纤检测原理, 介绍了器件综合设计方法, 并给出了器件的结构参数。利用MEMS加工技术成功制作出了MEMS光纤磁传感器样品, 最终得到的磁传感器的尺寸为3.7 mm×2.7 mm×0.5 mm。对磁传感器进行了实验测试, 得到的输出实验值与理论值吻合。测试结果表明, 该磁传感器的光纤检测灵敏度可达到0.65 dB/mT, 最小可分辨磁场可达167 nT。将MEMS敏感结构与光纤检测相结合, 该传感器兼备了两者的优点, 结构紧凑、制作工艺简单、工作时无需电流激励。