Dual-band D-shaped SPR fiber sensor based on birefringence analysis

Ren, Qiming; Liu, Fei; Miao, Yinping; Zhang, Kailiang

doi:10.1016/j.optcom.2021.127545

Cited by 13 publications

(2 citation statements)

References 33 publications

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“…The step-like variation in the red and black curves of the RI (unlike the CL of the smooth blue curve of the core-guided mode) is due to the RI change when the energy of the core-guided mode rapidly transforms to the SPP mode from the fiber core region to the metal surface. This result is similar to other research studies (see, e.g., [41,54,[62][63][64]). This phenomenon can be explained by the fact that CL is proportional to Im(n eff ) [65].…”

Section: Resultssupporting

confidence: 93%

Improving Temperature-Sensing Performance of Photonic Crystal Fiber via External Metal-Coated Trapezoidal-Shaped Surface

et al. 2023

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This article describes a photonic crystal fiber (PCF) temperature sensor that utilizes a flat, metal-coated trapezoidal surface. The PCF is made up of two layers of elliptical air holes and a polished trapezoidal surface that allows temperature sensing. An external sensing approach is used to deposit a thin silver layer on the reflective surface, while a thin SiO2 film acts as an oxidation-resistant coating. The top elliptical air hole serves as the interface for energy transformation from the core-guided mode to the surface plasmon-polariton (SPP) mode. Simulations carried out using the finite element method indicate that the proposed SPR-PCF temperature sensor can achieve a maximum temperature sensitivity and resolution of up to 5200 pm/°C and 0.01923 °C, respectively, across a temperature range of 10 to 60 °C. This research has significant potential for sensor design and real-time temperature remote sensing applications.

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Section: Resultssupporting

confidence: 93%

Improving Temperature-Sensing Performance of Photonic Crystal Fiber via External Metal-Coated Trapezoidal-Shaped Surface

et al. 2023

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“…D-shaped fibres are usually employed for sensing purposes [ 108 ]. The flat side can be coated with sensing materials or placed close to the sensing element, enhancing the interaction between the guided light and the external environment [ 109 ]. This configuration enables applications such as evanescent wave sensing, refractive index sensing, and SPR sensing [ 110 , 111 , 112 ].…”

Section: Most Widely Employed Optical Fibre Configurations In Sensing...mentioning

confidence: 99%

Optical Fibre-Based Sensors—An Assessment of Current Innovations

Khonina,

Kazanskiy,

Butt

2023

Biosensors

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Optical fibre sensors are an essential subset of optical fibre technology, designed specifically for sensing and measuring several physical parameters. These sensors offer unique advantages over traditional sensors, making them gradually more valuable in a wide range of applications. They can detect extremely small variations in the physical parameters they are designed to measure, such as analytes in the case of biosensing. This high sensitivity allows them to detect subtle variations in temperature, pressure, strain, the refractive index of analytes, vibration, and other environmental factors with exceptional accuracy. Moreover, these sensors enable remote sensing capabilities. Since light signals are used to carry information, the sensing elements can be placed at distant or inaccessible sites and still communicate the data back to the central monitoring system without signal degradation. In recent times, different attractive configurations and approaches have been proposed to enhance the sensitivity of the optical fibre-based sensor and are briefly explained in this review. However, we believe that the choice of optical fibre sensor configuration should be designated based on the specific application. As these sensors continue to evolve and improve, they will play an increasingly vital role in critical monitoring and control applications across various industries.

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