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中文摘要：
系统采用激光加热小基座（LHPG）法生长出掺Cr^3＋的蓝宝石光纤荧光温度传感头，它具有结构紧凑与耐高温等特点，测温范围从室温到450℃。利用锁相放大器有效去除信号中的噪声，提高系统的信噪比。在对荧光测温机理和有关光纤技术进行分析的基础上，采用带激励光泄露噪声的希尔伯特变换相敏检测，可对荧光寿命进行实时测量。
英文摘要：
A sapphire fiber fluorescence thermal probe with Cr^3＋ ion-doped end is grown from the laser heated pedestal growth（LHPG） method. The fluorescence thermal probe has the advantages of compact in structure, high performance and ability to detect temperature ranging from the room temperature to 450℃. Through lock-in amplifier,the noise out of the signal can be effectively decreased, so that the signal-to-noide ratio can be improved. Based on the theoretical analysis of the fluorescence temperature measurement methodology and fiber technology, a phase-sensitivity measurement based on Hillbert transformation is adopted to make the real-time measurement.
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