针对复杂环境下的弱光信号检测和温度影口的问题，提出一种以 MSP430为核心控制器、雪崩二极管（ APD）为传感器、远距离无线也（LoRa）技术为数据传输的设计方案。该方案采用偏压自适应温度补偿也珞 ，使偏置也压随温度而变化，从而使 APD增益达到稳定。实验表明．通过温度补偿也珞， APD增压受温度影口较小，且增益稳定在100土5 dB，同时该方案对弱光信号检测误差小于 3.92%，且能够在某厂区 10 km以内 实时远程无线监测弱光强度变化。

为了将拉锥光纤的光学特性和光纤环镜的滤波特性相结合, 提出了一种用拉锥光纤优化的光纤环镜滤波器结构。实验研究发现, 在级联的2阶高双折射光纤环镜滤波器中接入拉锥光纤, 滤波器输出谱的主峰3dB带宽得到显著压缩, 品质因数进一步提高, 其Q值很容易达到5.2, 滤波器在10dB~35dB调制深度范围内调谐更灵活, 输出波形更加稳定。结果表明, 该结构改善了高双折射光纤环镜滤波器特性, 使调谐更为灵活。

基于啁啾光纤光栅和长周期光栅，文章提出一种应用于聚合物微环传感器和微环传感器阵列的信号解调方法。通过调整长周期光栅的峰值波长来匹配感测范围，从而实现线性边沿滤波。该系统由全光纤器件组成，这种解调可以达到31 pm的高分辨率。双通道系统中，每个通道的波长带宽为2.4 nm。

为了提高双包层光纤结构中泵浦光耦合进纤芯的效率，文章首先探索了常折射率内包层光纤中芯径与内包层尺寸比对吸收效率的影响。然后对端泵入射光进行建模，研究了纤芯偏心距的优化。数值模拟结果表明，当偏心距为R-r时，即纤芯位于内包层边缘时，吸收效率最高。文章还阐述了渐变折射率内包层对耦合效率的影响。

A technique for compensation of temperature effects in fiber grating sensors is reported. For strain sensors and other sensors related to strain such as electromagnetic sensors, a novel structure is designed, which uses two fiber Bragg gratings (FBGs) as strain differential sensor and has temperature effects cancelled. Using this technique, the stress sensitivity has been amplified and gets up to 0.226 nm/N, the total variation in wavelength difference within the range of 3-45 oC is 0.03 nm, 1/14 of the uncompensated FBG. The structure can be used in the temperature-insensitive static strain measurement and minor-vibration measurement.

A novel method for fabricating dual-wavelength fiber Bragg gratings (FBGs) by using one phase mask is developed. The method is based on a double-exposure technique. Our technique lends itself to writing gratings with controllable reflectivity and separation of two Bragg wavelengths. A grating with two equal transmission peaks of 20.25 dB is obtained by this method and the separation of the two Bragg wavelengths is about 0.8 nm. With the grating, we demonstrate a dual-wavelength erbium-doped fiber ring laser whose interval of the two peaks is 0.8 nm. The laser's peak powers can get 3.1 mW above and have a good stability.