【摘要】 对基于模间Mach-Zehnder干涉式、Michelson干涉、F-P干涉和荧光等原理的微结构光纤温度传感器开展了较为系统和深入的研究,建立了相关理论,研制出了一系列新型光纤温度传感器及其功能器件.展示了一种新型的多参量荧光光纤有源温度传感器,并建立一种新的信号处理方法;利用液体填充微结构光纤制作出的在线式、全光纤Mach-Zehnder干涉式温度传感器,敏感度达–1.83 nm/℃;利用全固态光子带隙光纤内的高阶导模来制作结构紧凑的Michelson高温传感器,传感头尺寸仅为1.03 mm;基于柚子型小纤芯微结构光纤制作了微腔F-P高温传感器,温度的灵敏度为17.7 pm/℃,测量温度达1 000℃.更多还原

【Abstract】 A variety of microstructured fiber temperature sensors, including intermodalinterference types of Mach-Zehnder, Michelson and F-P interferometers and fluorescence type based on demodulation method, have been studied comprehensively and profoundly.The corresponding theories, sensor systems and functional devices are constructed. Among these works, a novel multi-parameter fluorescence fiber temperature sensor with a new signal processing method based on the strong correlation between excitation light and fluorescence was proposed. And based on a small segment of liquid-filled microstructured fiber, an all-fiber Mach-Zehnder temperature fiber sensor with ultrahigh sensitivity of –1.83 nm/℃ was developed. In addition, a Michelson-type high temperature fiber sensor with a tiny probe size of only 1.03 mm was achieved by utilizing a high-order mode in all-solid photonic bandgap fiber. Moreover, a grape-type microstructured fiber F-P interferometer sensor for high temperature measurement was proposed and demonstrated. The high temperature sensor performs a sensitivity of 17.7 pm/℃ at 1 570 nm and a high measurable temperature of up to 1 000℃.更多还原