論述了喇曼散射與布里淵散射光纖溫度傳感器的頻域分析方法，該方法克服了傳統(tǒng)時(shí)域法在信號(hào)檢測(cè)中需要高速采樣電路的缺點(diǎn)，為提高傳感器空間分辨率開辟了新的途徑，討論了一種基于模耦合原理的高空間分辨率分布式溫度傳感器，并對(duì)喇曼散射、布里淵散射和模耦合效應(yīng)三種傳感器的特點(diǎn)進(jìn)行了比較。
關(guān) 鍵 詞 分布式溫度傳感; 喇曼散射; 布里淵散射; 模耦合

Abstract The principle of distributed optical-fiber temperature sensor, based on Raman scatter and Brillouin scatter , is discussed by this paper , which adopts the frequency analytical method. The analytical method can overcome the shortcoming of the traditional temporal analytical method, which needs high-speed sample circuit. Furthermore the analytical method has broke a new path to enhance the spatial resolution of sensors. At the same time , a high spatial resolution optical-fiber sensor based on model coupling is discussed by this paper. Finally the comparison of several optical-fiber sensors are presented.
Key words distributed temperature sensor; Raman scatter; Brillouin scatter; mode couping