本文選題：表面等離子共振 + D型光纖傳感器��； 參考：《深圳大學(xué)》2017年碩士論文

【摘要】：光纖表面等離子體共振傳感技術(shù)是一種以光纖傳感和等離子體共振為基礎(chǔ)的傳感技術(shù),具有靈敏度高、體積小、便于組網(wǎng)安裝、可遠(yuǎn)程在線監(jiān)測及操作靈活等優(yōu)點(diǎn)。光子晶體光纖(Photonic Crystal Fiber,PCF)具有獨(dú)特的光學(xué)性質(zhì)和結(jié)構(gòu)的可設(shè)計(jì)性,從而可有效的控制光場激發(fā)表面等離子共振,為實(shí)現(xiàn)和研制高性能的光纖SPR傳感器提供了可能。將光子晶體光纖引入到SPR傳感器中,傳感器能夠?yàn)閭鬏敼夂蚐PR提供理想的相位匹配條件。本文中采用ESM-12光子晶體光纖作為傳感光纖,通過側(cè)拋制備D型光子晶體光纖,并在側(cè)拋區(qū)域沉積金膜制成D型光子晶體光纖SPR傳感器。利用在線檢測系統(tǒng)對(duì)傳感器的性能進(jìn)行了深入的研究。本論文主要研究工作如下:1、利用COMSOL Mutiphysics有限元分析軟件建立D型ESM-12光子晶體光纖SPR傳感器模型,對(duì)傳感器的傳輸特性進(jìn)行仿真計(jì)算。深入研究了不同拋磨深度、金屬膜厚度對(duì)該傳感器的折射率靈敏度及傳輸損耗特性的影響,計(jì)算結(jié)果表明傳感器的折射率靈敏度隨著拋磨深度增大而增大,但變化微小。在金屬膜厚度為30nm~60nm的范圍內(nèi),傳感器的損耗隨著膜厚增大而減小,而折射率靈敏度隨著膜厚增大而逐漸變大。通過對(duì)鍍金膜和銀膜的D型光子晶體光纖SPR傳感器性能研究,發(fā)現(xiàn)鍍銀膜的傳感器靈敏度更高。2、基于理論模擬,研制了D型ESM-12光子晶體光纖SPR傳感器,并搭建在線傳輸式檢測系統(tǒng)。利用光纖側(cè)拋系統(tǒng)成功的拋磨出D型光子晶體光纖,并在拋磨區(qū)沉積上金屬傳感膜完成制備D型光子晶體光纖SPR傳感器。利用搭建的在線傳輸式檢測系統(tǒng)對(duì)傳感器的傳感特性進(jìn)行了測試。3、研究了側(cè)拋長度L為15mm,側(cè)拋深度h為60μm,金膜厚度t為45nm的D型光子晶體光纖SPR傳感器的傳感特性。實(shí)驗(yàn)結(jié)果顯示,在折射率為1.3388~1.3638范圍內(nèi),傳感系統(tǒng)靈敏度隨著折射率增大,逐漸升高,最高靈敏度可達(dá)2336.2nm/RIU,仿真計(jì)算結(jié)果和實(shí)驗(yàn)測量值基本吻合。同時(shí)提出了一種結(jié)合共振峰波長和光強(qiáng)度的二維調(diào)制方法,提高了傳感器的分辨率,達(dá)到6.53×10-5RIU。4、研究了不同光纖側(cè)拋長度L對(duì)傳感器性能的影響,實(shí)驗(yàn)分別制備了拋磨長度為10mm、15mm、20mm和25mm四個(gè)不同長度的傳感器。研究發(fā)現(xiàn),隨著拋磨長度L增大,側(cè)拋區(qū)表面的非均勻性逐漸變大,導(dǎo)致共振峰半高寬變寬,傳感器的靈敏度逐漸降低。實(shí)驗(yàn)結(jié)果顯示,當(dāng)拋磨長度L控制在10mm,折射率測量范圍為1.40~1.42時(shí),傳感器的平均靈敏度為7381nm/RIU。5、探究了D型ESM-12光子晶體光纖SPR傳感器溫度敏感特性。研究表明,在30℃~90℃溫度范圍內(nèi),隨著溫度的升高,SPR光譜共振峰向短波長方向漂移,且呈線性關(guān)系,傳感器平均溫度靈敏度為0.23416nm/℃。6、對(duì)D型ESM-12光子晶體光纖SPR傳感器的重復(fù)性和穩(wěn)定性進(jìn)行了檢測。實(shí)驗(yàn)選擇了傳感長度L為20mm的D型光子晶體光纖SPR傳感器在室溫(24℃)條件下做重復(fù)性試驗(yàn),分別對(duì)每一折射率溶液及每一組折射率溶液的共振波長漂移量進(jìn)行計(jì)算,其最小標(biāo)準(zhǔn)方差(λ_(SD))分別為1.15nm和2.58nm,說明傳感器對(duì)同一樣品表現(xiàn)出較好的重復(fù)性,對(duì)更換不同樣品表現(xiàn)出較好的穩(wěn)定性。7、提出了一種D型全固態(tài)光子晶體光纖SPR傳感器,對(duì)D型全固態(tài)光子晶體光纖SPR傳感器的拋磨深度、折射率靈敏度進(jìn)行理論仿真和分析,發(fā)現(xiàn)拋磨深度對(duì)傳感器的靈敏度影響較小,實(shí)驗(yàn)上也進(jìn)行了相應(yīng)的探索。
[Abstract]:Optical fiber surface plasmon resonance sensing technology is a sensing technology based on optical fiber sensing and plasma resonance. It has the advantages of high sensitivity, small volume, easy to set up network, remote on-line monitoring and flexible operation. Photonic Crystal Fiber (PCF) has unique optical properties and structure. In order to effectively control the surface plasmon resonance in the light field, it is possible to realize and develop the high-performance optical fiber SPR sensor. The photonic crystal fiber is introduced into the SPR sensor, and the sensor can provide ideal phase matching conditions for the transmission light and the SPR. In this paper, the ESM-12 photonic crystal fiber is used as the sensing fiber. The D photonic crystal fiber is prepared by side throwing, and the D photonic crystal fiber SPR sensor is made by depositing gold film in the side throwing region. The performance of the sensor is studied by on-line detection system. The main research work of this paper is as follows: 1, D type ESM-12 photonic crystal fiber S is established by using COMSOL Mutiphysics finite element analysis software. The PR sensor model is used to simulate the transmission characteristics of the sensor. The influence of the thickness of the metal film on the refractive index sensitivity and transmission loss characteristics of the sensor is studied. The results show that the sensitivity of the sensor increases with the increase of the polishing depth, but the thickness of the metal film is small. In the range of 30nm~60nm, the loss of the sensor decreases with the increase of the thickness of the film, and the sensitivity of the refractive index becomes larger with the increase of the thickness of the film. Through the study of the D type photonic crystal fiber SPR sensor of the gold plating and silver films, it is found that the sensitivity of the silver plated film sensor is higher.2. Based on the theoretical simulation, the D type ESM-12 photonic crystal light is developed. The fiber SPR sensor and the on-line transmission detection system are built. Using the optical fiber side throwing system, the D photonic crystal fiber is polished successfully, and the D photonic crystal fiber SPR sensor is prepared by the metal sensing film deposited on the polishing area. The sensor characteristics of the sensor are tested by the built on-line transmission detection system, and the research of the sensor is studied. The sensing characteristics of the D type photonic crystal fiber SPR sensor with the side throwing length of L 15mm, the side throwing depth of H 60 m and the gold film thickness t of 45nm are D type photonic crystal fiber SPR sensors. The experimental results show that the sensitivity of the sensing system increases with the refractive index, and the highest sensitivity can reach 2336.2nm/RIU. The simulation results and the experimental measurements are measured. At the same time, a two-dimensional modulation method combining the resonant peak wavelength and light intensity is proposed, which improves the resolution of the sensor and reaches 6.53 x 10-5RIU.4. The influence of different fiber side length L on the performance of the sensor is studied. The experiments are made to prepare four sensors with different lengths of 10mm, 15mm, 20mm and 25mm respectively. It is found that the non uniformity of the surface of the side throwing area becomes larger with the increase of the grinding length L, which leads to the half width and width of the resonant peak, and the sensitivity of the sensor gradually decreases. The experimental results show that the average sensitivity of the sensor is 7381nm/RIU.5 when the length of the polishing length is L controlled in 10mm and the measurement range of the refractive index is 1.40~1.42, and the D type ESM-12 photon is explored. The temperature sensitivity of the crystal fiber SPR sensor shows that, with the temperature rising at 30 C ~90, the SPR spectral resonance peak is drifting to the short wavelength direction and has a linear relationship. The average temperature sensitivity of the sensor is 0.23416nm/ C.6, and the repeatability and stability of the D type ESM-12 photonic crystal fiber SPR sensor are examined. The experiment selected the D type D photonic crystal fiber SPR sensor with a sensing length of 20mm at room temperature (24 degrees C) to make a repeatability test. The resonance wavelength drift of each refractive index solution and each group of refractive index solutions was calculated respectively. The minimum standard variance (SD) was 1.15nm and 2.58nm respectively, indicating the sensor to the same sample. It shows good repeatability and shows good stability.7 for the replacement of different samples. A D type all solid-state photonic crystal fiber SPR sensor is proposed. The polishing depth of D type all solid-state photonic crystal fiber SPR sensor and the sensitivity of refractive index are theoretically simulated and analyzed. It is found that the influence of the polishing depth on the sensitivity of the sensor is more than that of the SPR sensor. Small, the experiment has also carried out the corresponding exploration.

【學(xué)位授予單位】：深圳大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TN253;TP212

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