【摘要】：光子晶體光纖(Photonic Crystal Fiber,PCF)因獨(dú)特的結(jié)構(gòu)設(shè)計(jì)和新穎的導(dǎo)光特性,被廣泛應(yīng)用于各種領(lǐng)域。尤其在傳感領(lǐng)域中的優(yōu)良特性,使PCF成為現(xiàn)階段光纖傳感領(lǐng)域的研究熱點(diǎn)之一。本文主要針對(duì)光子晶體光纖傳感特性進(jìn)行研究:(1)基于光波導(dǎo)橫向模耦合理論,設(shè)計(jì)了一種磁流體填充光子晶體光纖結(jié)構(gòu),通過(guò)優(yōu)化結(jié)構(gòu)實(shí)現(xiàn)了溫度/磁場(chǎng)的傳感,其中溫度敏感系數(shù)分別達(dá)到0.512nm/℃和0.449nm/℃,磁場(chǎng)敏感系數(shù)分別到達(dá)-1.927nm/mT與-1.681nm/mT。此研究成果有助于解決復(fù)雜環(huán)境下溫度/磁場(chǎng)的交叉敏感問(wèn)題。(2)基于光子晶體光纖光柵(Photonic Crystal Fiber Bragg Gate,PCFBG)溫度傳感特性,通過(guò)向PCFBG包層空氣孔中選擇性填充丙二醇實(shí)現(xiàn)溫度不敏感傳感特性,此溫度不敏感PCFBG具有優(yōu)良應(yīng)變傳感特性。因此,通過(guò)級(jí)聯(lián)結(jié)構(gòu)與參數(shù)優(yōu)化可實(shí)現(xiàn)溫度/應(yīng)變雙參量傳感,其中溫度補(bǔ)償?shù)膫鞲型ǖ缿?yīng)變敏感系數(shù)達(dá)到1.226pm/με。另一常規(guī)傳感通道溫度敏感系數(shù)達(dá)到13.27pm/℃,應(yīng)變敏感系數(shù)達(dá)到1.203pm/με。(3)基于理論研究成果設(shè)計(jì)了一種光子晶體光纖光柵傳感解調(diào)方案,該方案主要包括光路單元、信號(hào)處理單元和顯示單元,通過(guò)軟件設(shè)計(jì)實(shí)現(xiàn)溫度/應(yīng)變雙參量傳感解調(diào)。
[Abstract]:Photonic crystal fiber (Photonic Crystal) has been widely used in various fields due to its unique structure design and novel light conduction characteristics. Especially in the field of sensing, PCF has become one of the research hotspots in the field of optical fiber sensing. In this paper, the sensing characteristics of photonic crystal fiber are studied: (1) based on the optical waveguide transverse mode coupling theory, a magnetofluid filled photonic crystal fiber structure is designed, and the temperature / magnetic field sensing is realized by optimizing the structure. The temperature sensitivity coefficient reaches 0.512nm/ 鈩，

本文編號(hào)：2188909