本文選題：表面等離子體 + 光子晶體光纖�。� 參考：《南京郵電大學(xué)》2017年碩士論文

【摘要】：傳感器是物聯(lián)網(wǎng)發(fā)展不可缺少的核心技術(shù),起著信息感知的重要作用。隨著光纖技術(shù)的發(fā)展,以光纖為載體的光纖傳感器也隨之產(chǎn)生。伴隨著光子晶體光纖的出現(xiàn),因其結(jié)構(gòu)的靈活性和奇特的性質(zhì)在傳感器研究領(lǐng)域中而備受關(guān)注。很多的研究人員用它來代替?zhèn)鹘y(tǒng)光纖來進(jìn)行傳感器的研究工作。表面等離子體共振原理因其對環(huán)境折射率的異常敏感在折射率傳感器研究領(lǐng)域中而備受關(guān)注。將光子晶體光纖和表面等離子體共振結(jié)合起來所產(chǎn)生的基于表面等離子體光子晶體光纖傳感器在傳感器領(lǐng)域備受人們的關(guān)注。深入開展該類傳感器的研究,對于物聯(lián)網(wǎng)的應(yīng)用具有重要意義。本文提出了一種三角晶格的六邊形結(jié)構(gòu)鉑薄膜等離子體光子晶體光纖折射率傳感器。該傳感器的金屬鉑薄膜在光子晶體光纖外表面,并且可以直接放在待測液體中進(jìn)行測量,可以簡化制作過程和測量過程。采用有限元仿真軟件COMSOL Multiphysics對其進(jìn)行數(shù)值仿真。通過仿真結(jié)果可以得出測量液體的折射率范圍為1.31-1.38,最大靈敏度6000nm/RIU。另外,由于鉑薄膜等離子體光子晶體光纖傳感器的測量范圍有限。本文提出了銀薄膜等離子體光子晶體光纖傳感器。該傳感器在鉑薄膜等離子體光子晶體光纖折射率傳感器結(jié)構(gòu)的基礎(chǔ)上,將金屬鉑換成金屬銀,測量液體折射率范圍是1.39-1.42,最大靈敏度為14000nm/RIU。本文提出的傳感器結(jié)構(gòu)簡單,靈敏度較高,組合以后可以擴(kuò)大傳感器的測量范圍,在濃度測量、生化檢測、環(huán)境檢測等方面具有潛在的應(yīng)用價值。
[Abstract]:Sensor is an indispensable core technology in the development of the Internet of things, and plays an important role in information perception. With the development of optical fiber technology, optical fiber sensor with optical fiber as carrier is also produced. With the appearance of photonic crystal fiber (PCF), it has attracted much attention because of its flexibility and peculiar properties. Many researchers use it to replace conventional optical fibers for sensor research. The principle of surface plasmon resonance (SPR) has attracted much attention because of its unusual sensitivity to environmental refractive index in the field of refractive index sensors. The surface plasma-based photonic crystal fiber sensor, which combines photonic crystal fiber and surface plasmon resonance, has attracted much attention in the sensor field. The research of this kind of sensors is of great significance for the application of the Internet of things. In this paper, a hexagonal planar plasma photonic crystal fiber refractive index sensor with triangular lattice is proposed. The platinum film of the sensor is located on the outer surface of the photonic crystal fiber and can be directly measured in the liquid to be measured. The fabrication and measurement process can be simplified. Finite element simulation software COMSOL Multiphysics is used to simulate it. The results of simulation show that the refractive index range of liquid is 1.31-1.38, and the maximum sensitivity is 6000nm / r RIU. In addition, due to the limited measurement range of platinum thin film plasma photonic crystal fiber sensor. A silver thin film plasma photonic crystal fiber sensor is presented in this paper. Based on the structure of platinum thin film plasma photonic crystal fiber refractive index sensor, the metal platinum is replaced by silver. The refractive index of liquid is measured in the range of 1.39-1.42, and the maximum sensitivity is 14000nm / r RIU. The sensor proposed in this paper is simple in structure and high in sensitivity. It can expand the range of sensor measurement after the combination. It has potential application value in concentration measurement, biochemical detection, environmental detection and so on.
【學(xué)位授予單位】：南京郵電大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TP212

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