中文摘要：

由多模式纤维和起来逐渐变细的一个树桩组成的一个新同轴的 Mach-Zehnder 干涉仪(MZI ) 传感器被建议并且示威。温度测量能被检测波长移动执行。干涉仪长度和剧降波长上的敏感的相关性被讨论。试验性的结果显示出 113.6 pm/ 牥瀠敲敳瑮 ? 桴 ? 敤楳湧愠摮愠慮祬楳? 景漠瑰捩污映汩整獲琠慨 ? 牡 ? 汰捡摥愠 ? 桴 ? 畯灴瑵漠 ? 的最大的温度敏感楤敲瑣祬洠摯汵瑡摥瘠牥楴慣? 慣楶祴猠牵慦散攠業瑴湩 ? 慬敳 ? 嘨千 ?? 湩琠敨瀠潲散獳漠 ? 湩硥数獮癩? 牴湡浳瑩整獲椠灭敬敭瑮瑡潩 ? 潦 ? 灵潣業杮朠湥牥瑡潩 ? 灯楴慣?捡散獳渠瑥潷歲

英文摘要：

A new in-line Mach-Zehnder interferometer （MZI） sensor consisting of a stub of multi-mode fiber and an up-taper was proposed and demonstrated. Temperature measurement can be carried out by detecting wavelength shift. Dependency of sensitivity on interferometer length and dip wavelength was discussed. Experimental results showed a maximum temperature sensitivity of 113.6pm/℃ can be achieved, which is superior to most fiber temperature sensors based on in-line MZIs within the range from 20℃ to 80℃, also a good mechanical strength can be obtained. The proposed sensor is a good candidate for temperature measurement, due to the advantages of simple structure, easy fabrication, cost- effective and high sensitivity.