本文關(guān)鍵詞：保偏光子晶體光纖模間干涉彎曲傳感特性研究　出處：《燕山大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： 光纖彎曲傳感器 保偏光纖 模間干涉 光子晶體光纖

【摘要】：隨著科學(xué)技術(shù)的發(fā)展,光纖彎曲傳感器基于光纖的電絕緣、質(zhì)量輕、柔韌性好、體積小、抗電磁干擾等特點(diǎn)應(yīng)用于航天航空、地球物理、建筑物健康監(jiān)測(cè)等領(lǐng)域中。光纖彎曲傳感器是強(qiáng)度調(diào)制型光纖傳感器,傳統(tǒng)的光纖彎曲傳感器是通過(guò)彎曲光纖導(dǎo)致光纖傳輸光強(qiáng)的損耗變化間接測(cè)量溫度、壓力、流量、速度、應(yīng)變等環(huán)境參量。然而,由于傳統(tǒng)的光纖彎曲傳感器損耗因素多難以精確計(jì)算環(huán)境參量的變化,而且大多使用光譜儀探測(cè)價(jià)格昂貴。因此,研究一種原理較成熟、誤差因素少以及方便測(cè)試的新型光纖彎曲傳感器具有重要意義。在現(xiàn)有的保偏光子晶體光纖模間干涉?zhèn)鬏斕匦匝芯康幕A(chǔ)上,本課題利用保偏光子晶體光纖模間干涉原理設(shè)計(jì)了一種新型的光纖彎曲傳感器,在理論分析和仿真的基礎(chǔ)上,對(duì)所設(shè)計(jì)的光纖彎曲傳感器進(jìn)行了實(shí)驗(yàn)研究。論文的主要內(nèi)容有:首先,利用電磁場(chǎng)理論分析保偏光纖模式特性,并由此引出保偏光子晶體光纖模間干涉理論,研究了低階模LP01模和LP11模之間的干涉特性。其次,采用有限元分析法,對(duì)保偏光子晶體光纖雙模工作波長(zhǎng)范圍、模場(chǎng)面積以及模間干涉靈敏度等進(jìn)行分析研究,并對(duì)類矩形光子晶體光纖、橢圓芯保偏光纖以及雙空氣孔光子晶體光纖的模間干涉特性進(jìn)行比較分析,最終確定了雙空氣孔光子晶體光纖作為光纖彎曲傳感器的傳感光纖。然后,利用有限差分光束傳輸法,模擬計(jì)算雙空氣孔光子晶體光纖模場(chǎng)分布,即LP01模和LP11模的有效折射率和電場(chǎng)分布的變化。進(jìn)而研究了在不同彎曲方向以及不同彎曲半徑下的模場(chǎng)分布的變化。并仿真計(jì)算模間干涉結(jié)果,給出了干涉光強(qiáng)分布與彎曲半徑之間的關(guān)系,討論了波長(zhǎng)對(duì)彎曲傳感靈敏度的影響。最后,通過(guò)設(shè)計(jì)搭建實(shí)驗(yàn)平臺(tái),對(duì)雙空氣孔光子晶體光纖模間干涉特性進(jìn)行了實(shí)驗(yàn)驗(yàn)證。設(shè)計(jì)并實(shí)現(xiàn)了彎曲測(cè)試系統(tǒng),進(jìn)行了彎曲傳感器特性的實(shí)驗(yàn)研究,并對(duì)實(shí)驗(yàn)誤差進(jìn)行了分析,為將來(lái)進(jìn)一步研究提供優(yōu)化方向。
[Abstract]:With the development of science and technology, optical fiber bending sensor based on electrical insulation, light weight, good flexibility, small volume, anti electromagnetic interference and other characteristics used in aerospace, geophysical field, the structural health monitoring. Optical fiber bending sensor is intensity modulated optical fiber sensor, the traditional optical fiber bending sensor is caused by bending fiber temperature measurement, indirect loss changes in optical fiber transmission intensity of pressure, flow, velocity, strain and other environmental parameters. However, due to changes in optical fiber bending sensor loss factor of traditional and more difficult to accurately calculate the environmental parameters, and most of the use of spectrometer is expensive. Therefore, study on the principle of a mature, less error factors is of great significance and convenient test model optical fiber bending sensor. Based on the transmission characteristics of interference in the existing polarization maintaining photonic crystal fiber mode on, The subject of the use of polarization maintaining photonic crystal fiber intermodeinterference principle to design a new type of optical fiber bending sensor, on the basis of theory analysis and simulation, the design of optical fiber bending sensor was studied. The main contents of this paper are: firstly, analysis thepmf mode based on the characteristics of the theory of electromagnetic field, and thus leads to polarization maintaining photonic crystal fiber mode interference theory, studied the interference characteristics between the low order mode LP01 mode and LP11 mode. Secondly, using the method of finite element analysis of polarization maintaining photonic crystal fiber dual wavelength range, analyze the scene and intermodeinterference die product sensitivity, and the class of rectangular photonic crystal fiber partial, optical fiber and die hole photonic crystal fiber with dual air interference characteristics were compared and ultimately determine the elliptical core, two hole photonic crystal fiber as the optical fiber bending sensor The sensing optical fiber. Then, by using the finite difference beam propagation method, the simulation calculation of double hole photonic crystal fiber mode field distribution of LP01 mode and LP11 mode effective refractive index and the changes of the electric field distribution. And then studied in different bending direction and bending radius under the different distribution of the modes and simulation changes. Modular interference results, the relationship between the distribution of interference intensity and the bending radius is given, the effect of wavelength on the bending sensitivity is discussed. Finally, through the design of the experimental platform is built, on photonic crystal fiber mode dual air hole interference characteristics in the experiment. The design and implementation of bending test system, experimental study on bending sensor performance has been carried out, and the experimental error was analyzed for further study in the future to provide the optimization direction.

【學(xué)位授予單位】：燕山大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TN253

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 李亦軍;微彎光纖力傳感器實(shí)驗(yàn)研究[J];傳感器技術(shù);2002年11期

2 劉豐;曹德蘭;郭璇;;熊貓型保偏光纖模間干涉的傳感特性研究[J];光電子.激光;2012年03期

3 胡佳成;陳福昌;林尊琪;;基于布里淵光時(shí)域反射的分布式光纖傳感入侵定位檢測(cè)系統(tǒng)[J];光電子.激光;2012年05期

4 王子華,吳智勇;用耦合波理論求解漸變折射率光纖的傳播常數(shù)和模式場(chǎng)[J];光子學(xué)報(bào);1997年02期

5 吳長(zhǎng)莘;楊明偉;楊遠(yuǎn)洪;索鑫鑫;王婷;;光纖彎曲對(duì)干涉式光纖陀螺性能的影響[J];光學(xué)學(xué)報(bào);2014年03期

6 楊遠(yuǎn)洪;段瑋倩;葉淼;楊明偉;;光子晶體光纖陀螺技術(shù)[J];紅外與激光工程;2011年06期

7 孟洲,胡永明,熊水東,劉陽(yáng),倪明,張學(xué)亮;全保偏光纖水聽(tīng)器陣列[J];中國(guó)激光;2002年05期

8 馮素春;許鷗;魯韶華;寧提綱;簡(jiǎn)水生;;基于保偏光纖光柵的對(duì)稱腔多波長(zhǎng)摻鉺光纖激光器[J];中國(guó)激光;2009年07期

9 盧一鑫;楊璐娜;;光纖傳感器的應(yīng)用現(xiàn)狀及未來(lái)發(fā)展趨勢(shì)[J];科技信息;2011年03期

10 侯建平;寧韜;蓋雙龍;李鵬;郝建蘋;趙建林;;基于光子晶體光纖模間干涉的折射率測(cè)量靈敏度分析[J];物理學(xué)報(bào);2010年07期

相關(guān)博士學(xué)位論文 前2條

1 麻碩;基于高雙折射光子晶體光纖模間干涉的光學(xué)電壓互感器研究[D];燕山大學(xué);2011年

2 蘆鑫;基于模間干涉原理的空氣絕緣全光纖電壓互感器的研究[D];燕山大學(xué);2012年

相關(guān)碩士學(xué)位論文 前2條

1 曹德蘭;熊貓光纖和領(lǐng)結(jié)光纖模間干涉特性研究[D];燕山大學(xué);2012年

2 任萬(wàn)玲;模間干涉光纖電壓互感器模式傳輸理論的研究[D];燕山大學(xué);2010年

，

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