【摘要】：近年來(lái),由于光纖磁場(chǎng)傳感器的諸多性能優(yōu)勢(shì),如抗電磁干擾能力強(qiáng),重量輕,體積小以及帶寬大等等,在研究中受到了越來(lái)越多的關(guān)注。一些物理現(xiàn)象,如法拉第效應(yīng)、磁力等等,都可以用于制作光纖磁場(chǎng)傳感器,這其中,最流行的莫過(guò)于基于磁致伸縮材料的光纖磁場(chǎng)傳感器的研究。然而,磁致伸縮材料非常脆弱,在高頻工作狀態(tài)下會(huì)因低電阻率而產(chǎn)生較強(qiáng)的渦流效應(yīng)。因此,本課題提出了一種磁致伸縮復(fù)合材料,以求性能上的提高。在本文中,我們?cè)O(shè)計(jì)了一種新型的微型光纖磁場(chǎng)傳感器,通過(guò)將DBR光纖激光器嵌入環(huán)氧樹(shù)脂與Terfenol-D粉末混合的磁致伸縮復(fù)合材料中而制得。DBR光纖光柵激光器是利用一個(gè)193nm準(zhǔn)分子激光器,在摻鉺光纖上分別刻寫(xiě)長(zhǎng)度為6.5mm和5.5mm的光柵,光柵間距為5mm而制得。磁致伸縮復(fù)合材料是按照Terfenol-D粒子、E44環(huán)氧樹(shù)脂和650聚酰胺固化劑體積比為1:10:10混合制備而成。當(dāng)施加橫向磁場(chǎng)時(shí),磁場(chǎng)誘導(dǎo)磁致伸縮復(fù)合材料發(fā)生形變。磁場(chǎng)傳感器的機(jī)械結(jié)構(gòu)將形變轉(zhuǎn)換成橫向應(yīng)力施加于嵌入的DBR光纖激光器上。然后,激光的雙折射發(fā)生改變,最終表現(xiàn)為拍頻信號(hào)的變化。通過(guò)鑒別拍頻信號(hào)頻率的變化,來(lái)測(cè)量施加的磁場(chǎng)強(qiáng)度。經(jīng)測(cè)量,本文提出的磁場(chǎng)傳感器的靈敏度可達(dá)10.5Hz/μT,磁場(chǎng)測(cè)量范圍高達(dá)約0.3T。本論文的主要內(nèi)容如下:首先,我們研究雙偏振光纖激光器的制備。利用相位掩膜法及193nm準(zhǔn)分子激光器,在摻餌光纖上直接刻寫(xiě)與模板波長(zhǎng)相匹配的光纖光柵對(duì),進(jìn)而研制出了具有兩個(gè)正交偏振態(tài)的單縱模DBR光纖光柵激光器,并通過(guò)退火處理提升了DBR光纖激光器的性能。其次,利用Terfenol-D粉末,環(huán)氧樹(shù)脂E44及其固化劑,對(duì)磁致伸縮復(fù)合材料進(jìn)行了制備,建立了樹(shù)脂基磁致伸縮復(fù)合材料的受力模型,并進(jìn)行了公式推導(dǎo)。對(duì)制備過(guò)程中的工藝與注意事項(xiàng)進(jìn)行了簡(jiǎn)短的討論。再次,實(shí)現(xiàn)了基于磁致伸縮復(fù)合材料的DBR光纖磁場(chǎng)傳感器,根據(jù)光纖中的雙折射效應(yīng),推導(dǎo)了光纖激光器的拍頻漂移與待測(cè)磁場(chǎng)之間的關(guān)系,實(shí)驗(yàn)上實(shí)現(xiàn)了對(duì)磁場(chǎng)的測(cè)量,驗(yàn)證了相關(guān)的理論的準(zhǔn)確性及實(shí)驗(yàn)?zāi)Ｐ偷挠行浴Ｗ詈?對(duì)整篇論文進(jìn)行了簡(jiǎn)要的總結(jié)與回顧,對(duì)基于磁致伸縮復(fù)合材料的光纖磁場(chǎng)傳感器的應(yīng)用領(lǐng)域與前景進(jìn)行了展望。
[Abstract]:In recent years, more and more attention has been paid to the optical fiber magnetic field sensor due to its many performance advantages, such as strong anti-electromagnetic interference ability, light weight, small volume and large bandwidth. Some physical phenomena, such as Faraday effect, magnetic force and so on, can be used to fabricate optical fiber magnetic field sensors, among which, the most popular one is the study of optical fiber magnetic field sensors based on magnetostrictive materials. However, the magnetostrictive materials are very fragile and have strong eddy current effects due to low resistivity in high frequency working conditions. Therefore, a magnetostrictive composite is proposed to improve its properties. In this paper, we design a new kind of micro optical fiber magnetic field sensor. The DBR fiber laser is fabricated by embedding the DBR fiber laser into a magnetostrictive composite material mixed with epoxy resin and Terfenol-D powder. The DBR fiber grating laser is a 193nm excimer laser. The grating with length of 6.5mm and 5.5mm is written on erbium-doped fiber, and the grating spacing is 5mm. The magnetostrictive composites were prepared according to 1:10:10 volume ratio of Terfenol-D particles, E44 epoxy resin and 650 polyamide curing agent. When the transverse magnetic field is applied, the magnetic field induces the deformation of magnetostrictive composites. The mechanical structure of the magnetic field sensor converts the deformation to transverse stress applied to the embedded DBR fiber laser. Then, the birefringence of the laser changes, and finally the beat signal changes. The applied magnetic field intensity is measured by discriminating the frequency variation of the beat signal. The sensitivity of the proposed magnetic field sensor is as high as 10.5Hz/ 渭 T, and the magnetic field measurement range is about 0.3 T. The main contents of this thesis are as follows: firstly, we study the fabrication of dual polarization fiber laser. Using phase mask method and 193nm excimer laser, a pair of fiber Bragg gratings matching the template wavelength is written directly on the decoy fiber, and a single longitudinal mode DBR fiber grating laser with two orthogonal polarization states is developed. The performance of DBR fiber laser is improved by annealing. Secondly, using Terfenol-D powder, epoxy resin E44 and its curing agent, the magnetostrictive composite was prepared, the mechanical model of the resin matrix magnetostrictive composite was established, and the formula was deduced. The preparation process and points for attention were briefly discussed. Thirdly, the DBR fiber magnetic field sensor based on magnetostrictive composite material is realized. According to the birefringence effect in the fiber, the relationship between the beat frequency drift of fiber laser and the magnetic field to be measured is deduced, and the magnetic field is measured experimentally. The accuracy of the related theory and the validity of the experimental model are verified. Finally, the whole paper is briefly summarized and reviewed, and the application field and prospect of optical fiber magnetic field sensor based on magnetostrictive composite materials are prospected.
【學(xué)位授予單位】：暨南大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類(lèi)號(hào)】：TB33;TP212

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 宋章啟;張學(xué)亮;陽(yáng)明曄;胡永明;;基于Sagnac干涉儀的光纖直流磁場(chǎng)傳感研究[J];半導(dǎo)體光電;2007年06期

2 申人升;張玉書(shū);杜國(guó)同;;光纖激光器研究進(jìn)展[J];半導(dǎo)體光電;2009年01期

3 涂有瑞;飛速發(fā)展的磁傳感器[J];傳感器技術(shù);1999年04期

4 張文毓;;磁致伸縮智能材料研究進(jìn)展[J];傳感器世界;2009年02期

5 江民紅,徐鵬,顧正飛,成鋼;超磁致伸縮復(fù)合材料的靜態(tài)彈性模量及抗壓強(qiáng)度[J];稀有金屬材料與工程;2005年06期

6 楊興;胡建明;戴特力;;光纖光柵傳感器的原理及應(yīng)用研究[J];重慶師范大學(xué)學(xué)報(bào)(自然科學(xué)版);2009年04期

7 黃耀清,郝成宏;以磁致伸縮原理為基礎(chǔ)的光纖磁場(chǎng)傳感器的最新進(jìn)展[J];大慶高等專(zhuān)科學(xué)校學(xué)報(bào);1997年04期

8 胡姝玲,呂福云,謝春霞,董法杰,王文倩,董孝義;基于光纖干涉環(huán)的摻Y(jié)b~(3+)全光纖自調(diào)Q激光器[J];光電子·激光;2004年06期

9 關(guān)新春;董旭峰;歐進(jìn)萍;;超聲作用下樹(shù)脂基磁致伸縮復(fù)合材料的制備及其性能[J];功能材料;2008年08期

10 蘇紅新,呂可誠(chéng),閆培光,李乙鋼,呂福云,董孝義;內(nèi)腔級(jí)聯(lián)拉曼光纖激光器輸出特性的實(shí)驗(yàn)研究[J];光學(xué)學(xué)報(bào);2003年01期

相關(guān)會(huì)議論文 前1條

1 董旭峰;關(guān)新春;歐進(jìn)萍;;樹(shù)脂基磁致伸縮復(fù)合材料性能及應(yīng)用研究進(jìn)展[A];第六屆中國(guó)功能材料及其應(yīng)用學(xué)術(shù)會(huì)議論文集（3）[C];2007年

相關(guān)博士學(xué)位論文 前2條

1 劉偉升;光纖光柵傳感與光纖光柵激光器的應(yīng)用研究[D];浙江大學(xué);2011年

2 王莉;基于超磁致伸縮材料與光纖光柵的電流傳感理論及實(shí)驗(yàn)研究[D];河北工業(yè)大學(xué);2012年

相關(guān)碩士學(xué)位論文 前3條

1 沈震強(qiáng);用于弱磁場(chǎng)測(cè)量的光纖光柵法布里—珀羅干涉儀研究[D];西北工業(yè)大學(xué);2007年

2 都智剛;干涉型光纖弱磁傳感器解調(diào)系統(tǒng)穩(wěn)定性研究[D];上海交通大學(xué);2008年

3 丁立;基于磁流體和FBG的光纖磁場(chǎng)傳感研究[D];武漢理工大學(xué);2012年

，

本文編號(hào)：2320438