电池状态监测对于电池健康运行至关重要。随着电池性能不断提升，应用日益广泛，开发一种经济有效的电池传感系统迫在眉睫。与传统的电池传感技术相比，光纤传感器具有独特的优势，包括灵敏度高、体积小、容易集成、成本低等。本文全面概述了可用于电池状态监测的各种光纤传感器，包括光纤光栅传感器、光纤干涉仪传感器、光纤倏逝波传感器、光纤光致发光传感器和光纤散射传感器等，探讨了其工作原理，介绍了不同传感参数对应的传感方法及其性能。最后，提出了未来电池传感研究的挑战并进行了展望。

提出了一种耐高温光纤布拉格光栅阵列（FBGA）的制备方法。通过在拉丝塔上以聚酰亚胺作为涂层材料，利用相位掩模版技术和单脉冲在线刻写光栅，经过多次涂敷、烘干以及最后酰亚胺化，成功得到涂层直径为145~150 μm，中心波长范围为（1551.35±0.1）nm，反射率为0.06%，传输损耗为1.601 dB/km@1550 nm的聚酰亚胺涂层光纤布拉格光栅阵列（PI-FBGA）。然后对PI-FBGA的热稳定性和可靠性进行研究，结果表明，在线制备的PI-FBGA具有良好的热稳定性及可靠性，能够在300 ℃以下长期使用，300~400 ℃可短期使用。该传感光纤的成功制备扩大了常规在线弱光栅阵列的应用范围，在石油化工、环境监测、航空航天等领域具有广阔的应用前景。

Fiber Bragg grating (FBG) array is a powerful technique for quasi-distributed sensing along the entire length of sensing fiber with fast response and high precision. It has been widely used for temperature, strain, and vibration monitoring. In this review work, an overview on the recent advances of FBG arrays is conducted. Firstly, the fabrication methods of FBG array are reviewed, which include femtosecond laser system and online writing technique. Then, the demodulation techniques for FBG arrays are presented and discussed. Distributed static sensing can be performed by demodulating wavelength shift of each FBG, while phase demodulation techniques with low noise are employed for dynamic vibration sensing. Simultaneous distributed dynamic and static sensing system based on FBG array is also outlined. Finally, possible future directions are discussed and concluded. It is believed that the FBG array has great development potential and application prospect.

A fiber-optic shape sensing based on 7-core fiber Bragg gratings (FBGs) is proposed and experimentally demonstrated. The investigations are presented for two-dimensional (2D) and three-dimensional (3D) shape reconstruction by distinguishing bending and twisting of 7-core optical fiber with FBGs. The curvature and bending orientation can be calculated by acquiring FBG wavelengths from any two side cores among the six outer cores. And the shape sensing in 3D space is computed by analytic geometry theory. The experiments corresponding of 2D and 3D shape sensing are demonstrated and conducted to verify the theoretical principles. The resolution of curvature is about 0.1 m^–1 for 2D measuring. The error of angle in shape reconstruction is about 1.89° for 3D measuring. The proposed sensing technique based on 7-core FBGs is promising of high feasibility, stability, and repeatability, especially for the distinguishing ability on the bending orientation due to the six symmetrical cores on the cross-section.

An improved glucose sensitive membrane (GSM) is prepared by immobilizing glucose oxidase (GOD) onto a mixture of silica mesocellular foams (SiMCFs) and SiO2 nanoparticles (SiNPs) and then trapping it in a polyvinyl alcohol (PVA) gel. The membrane is coated onto a gold-glass sheet to create a surface plasmon resonance (SPR) sensor. A series of experiments are conducted to determine the optimized parameters of the proposed GSM. For a GSM with a component ratio of SiMCFs : SiNPs = 7 : 3 (mass rate), the resonance angle of the sensor decreases from 68.57° to 63.36°, and the average sensitivity is 0.026°/(mg/dL) in a glucose concentration range of 0 mg/dL-200 mg/dL. For a GSM with a component ratio of SiMCFs : SiNPs = 5 : 5 (mass rate), the resonance angle of the sensor decreases from 67.93° to 63.50°, and the sensitivity is 0.028°/(mg/dL) in a glucose concentration range of 0 mg/dL - 160 mg/dL. These data suggest that the sensor proposed in this study is more sensitive and has a broader measurement range compared with those reported in the literature to date.

介绍了一种制作在光纤端头的超微型Fizeau腔水下激波压力传感器,给出了传感器的基本理论和制作工艺;采用被动零差解调技术对该光纤Fizeau腔在冲击压力波作用下的瞬态速变干涉相位进行解调;采用活塞式压力计和聚焦式电磁冲击波源进行静态和动态定标实验。在0~60 MPa压力量程范围内,系统的定标结果如下:满量程时的线性度、重复性、回程误差和基本误差分别为3.26%、0.01153%、0.07%和3.407%,动态响应时间小于0.75 μs。