Design and numerical analysis of a gold-coated photonic crystal fiber based refractive index sensor

Mohammad Rakibul Islam; A. N. M. Iftekher; Kazi Rakibul Hasan; Julkar Nayen; Saimon Bin Islam; Aadreeta Hossain; Zareen Mustafa; Tahia Tahsin

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Design and numerical analysis of a gold-coated photonic crystal fiber based refractive index sensor

机译：金涂层光子晶体纤维折射率传感器的设计与数值分析

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In the course of past decade, surface plasmon resonance (SPR) based photonic crystal fiber (PCF) sensors have shown phenomenal advancement. Many researchers have proposed a wider range of SPR-based sensors by this time. But many of these proposed sensors either show low sensitivity or it is very difficult to fabricate the sensors for real time applications. We present a simple circular shaped PCF SPR sensor which is easy to fabricate as well as shows high sensitivity in the visible and near-infrared spectroscopy. A chemically stable and inactive plasmonic material, gold is applied to the outer layer of the PCF structure to generate surface plasmon excitation. A perfectly matched layer is used to minimize radiation absorption towards the surface. The guiding properties and analytical evaluation are carried out using commercially available COMSOL Multiphysics version 5.4 on the basis of finite element method. In x-polarization mode, the maximal value of amplitude sensitivity and wavelength sensitivity (WS) of the proposed sensor is 1757.3RIU~(-1) (Refractive Index Unit) and 32,000 nm/RIU respectively. In addition to that, the proposed design exhibits high sensor resolution of 1.428 × 10~(-6) and figure of merit of 587.2 indicating a high-performance sensor and demonstrates birefringence of 0.004 RIU. Moreover, the proposed PCF-SPR sensor is composed of only six symmetrical circular air holes, which makes it fabrication friendly. Owing to the high performance of the proposed sensor and high fabrication probability makes the sensor a strong contender to be used in biomedical and biochemical applications.

机译：在过去十年的过程中，表面等离子体谐振（SPR）的光子晶体纤维（PCF）传感器显示出现象的进步。此时，许多研究人员提出了更广泛的SPR基传感器。但是这些所提出的传感器中的许多都显示出低灵敏度，或者很难制造用于实时应用的传感器。我们介绍了一个简单的圆形PCF SPR传感器，易于制造，并且在可见和近红外光谱中显示出高灵敏度。化学稳定和非活动的等离子体材料，金被施加到PCF结构的外层以产生表面等离子体激发。完美匹配的层用于最小化朝向表面的辐射吸收。基于有限元方法，使用市售的COMSOL MultiphySics 5.4进行引导性能和分析评估。在X偏振模式中，所提出的传感器的幅度灵敏度和波长灵敏度（WS）的最大值分别为1757.3RIU〜（-1）（折射率单元）和32,000nm / RiU。除此之外，所提出的设计还具有1.428×10〜（-6）的高传感器分辨率，以及587.2的优点，表明高性能传感器，并证明了0.004 Riu的双折射。此外，所提出的PCF-SPR传感器仅由六个对称的圆形空气孔组成，这使其制造友好。由于所提出的传感器的高性能和高制造概率，使传感器成为生物医学和生物化学应用中的强抗伴侣。

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来源
《Optical and quantum electronics》 |2021年第2期|112.1-112.18|共18页
作者
Mohammad Rakibul Islam; A. N. M. Iftekher; Kazi Rakibul Hasan; Julkar Nayen; Saimon Bin Islam; Aadreeta Hossain; Zareen Mustafa; Tahia Tahsin;
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作者单位

Electrical and Electronic Engineering Islamic University of Technology Board Bazar Gazipur 1704 Bangladesh;

Electrical and Electronic Engineering Islamic University of Technology Board Bazar Gazipur 1704 Bangladesh;

Electrical and Electronic Engineering Islamic University of Technology Board Bazar Gazipur 1704 Bangladesh;

Electrical and Electronic Engineering Islamic University of Technology Board Bazar Gazipur 1704 Bangladesh;

Electrical and Electronic Engineering Islamic University of Technology Board Bazar Gazipur 1704 Bangladesh;

Electrical and Electronic Engineering Islamic University of Technology Board Bazar Gazipur 1704 Bangladesh;

Electrical and Electronic Engineering Islamic University of Technology Board Bazar Gazipur 1704 Bangladesh;

Electrical and Electronic Engineering Islamic University of Technology Board Bazar Gazipur 1704 Bangladesh;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种 eng
中图分类
关键词
Photonic crystal fiber (PCF); Biosensor; Wavelength sensitivity (WS); Amplitude sensitivity (AS); Figure of merits (FOM);

机译：光子晶体纤维（PCF）;生物传感器;波长灵敏度（WS）;振幅灵敏度（AS）;优点（FOM）;

Design and numerical analysis of a gold-coated photonic crystal fiber based refractive index sensor

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