【摘要】：在正六邊形包層空氣孔中填充特定負折射率溫度系數(shù)材料,通過溫度自補償實現(xiàn)非溫度依賴的應變傳感檢測�；隈詈夏＠碚�,建立傳感分析模型,結(jié)合控制變量法對不同溫度和波長下的模式有效折射率進行數(shù)值分析。在包層空氣孔填充不同液體材料,探究基模以及一階光波模式的諧振波長對溫度的不敏感特性,并對PCFBG中不同光波模式的溫度/應變傳感特性進行對比研究。計算結(jié)果表明,在包層空氣孔填充材料I,環(huán)境溫度由-20℃升至100℃,基模光場的反射峰中心波長僅漂移2.3pm,應變靈敏度達到1.234 8pm/με;在包層空氣孔填充材料II,一階光波模式僅漂移4.6pm,應變靈敏度為1.311 8pm/με。表明在光子晶體光纖包層空氣孔中填充對應的溫度補償材料能有效實現(xiàn)具備溫度穩(wěn)定性的高靈敏度應變傳感監(jiān)測。
[Abstract]:By filling the positive hexagonal cladding air hole with a specific negative refractive index temperature coefficient material, the non-temperature-dependent strain sensing detection is realized by temperature self-compensation. Based on the coupled mode theory, the sensing analysis model is established, and the effective refractive index of the mode at different temperatures and wavelengths is numerically analyzed with the control variable method. The temperature insensitive characteristics of the resonant wavelength of the fundamental mode and the first order light wave mode are investigated by filling the cladding air hole with different liquid materials, and the temperature / strain sensing characteristics of the different light wave modes in PCFBG are compared. The calculated results show that when the ambient temperature increases from -20 鈩，

本文編號：2338972