發(fā)布時間：2018-01-16 15:15

  本文關鍵詞：保偏光纖轉軸熔接Sagnac干涉環(huán)的光學游標效應及溫度傳感器　出處：《光學精密工程》2017年09期 　論文類型：期刊論文

  更多相關文章： 光纖傳感 溫度傳感器 Sagnac干涉儀 光學游標效應 保偏光纖

【摘要】：為了實現(xiàn)高靈敏度的溫度傳感,通過在基于保偏光纖Sagnac干涉儀的Sagnac環(huán)內(nèi)增加一段保偏光纖,控制兩段保偏光纖快軸熔接角度接近45°,設計并制造了保偏光纖轉軸熔接Sagnac干涉環(huán)結構。在理論上通過Jones矩陣推導了保偏光纖轉軸熔接Sagnac干涉環(huán)的干涉譜公式,基于仿真分析研究了主要參數(shù)對保偏光纖轉軸熔接Sagnac干涉環(huán)輸出特性的影響。仿真結果表明,保偏光纖轉軸熔接Sagnac干涉環(huán)實現(xiàn)了光學游標效應,兩段保偏光纖的平均長度、兩段保偏光纖的長度差分別影響保偏光纖轉軸熔接Sagnac干涉環(huán)輸出干涉譜的波長間隔和包絡周期;在實驗中,將保偏光纖轉軸熔接Sagnac干涉環(huán)應用在光纖溫度傳感器中。實驗結果表明,在2cm的感溫區(qū)域,保偏光纖轉軸熔接Sagnac干涉環(huán)溫度傳感器的靈敏度就達到了-2.44nm/℃,是普通Sagnac干涉環(huán)溫度傳感器(-0.163nm/℃)的14.97倍。
[Abstract]:In order to realize high sensitivity temperature sensing, by adding a segment of polarization maintaining fiber in the Sagnac loop based on the polarization-maintaining fiber Sagnac interferometer, the fast axis welding angle of the two segment polarization maintaining fiber is close to 45 擄. The structure of the Sagnac interference ring is designed and manufactured, and the interference spectrum formula of the Sagnac interference ring is derived by using the Jones matrix. Based on the simulation analysis, the influence of main parameters on the output characteristics of the fused Sagnac interference ring of polarization maintaining fiber shaft is studied. The optical Vernier effect and the average length of two-segment polarization-maintaining fiber are realized by welding the Sagnac interference ring of the polarization-maintaining fiber. The length difference of the two polarization-maintaining fibers affects the wavelength interval and the envelope period of the output interference spectrum of the fused Sagnac interference ring of the polarization-maintaining fiber. In the experiment, the polarization-maintaining fiber axis welding Sagnac interference ring is applied to the optical fiber temperature sensor. The experimental results show that the sensor is in the temperature range of 2 cm. The sensitivity of the Sagnac interference ring temperature sensor is -2.44 nm / 鈩，

本文編號：1433659