An auxiliary liquid modulated PCF-LSPR sensor with an adjustable wide detection range and high Ri sensitivity

IF 0.7 4区物理与天体物理 Q4 OPTICS

Journal of Russian Laser Research Pub Date : 2025-02-13 DOI:10.1007/s10946-024-10232-3

Sihang Lin, Pengxiang Chang, Ailing Zhang, Yanmei Shi, Honggang Pan, Fei Liu, Junfeng Wang, Pengxia Sui, Guangxiao Cao, Nan Cui, Yongning Zhang

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Abstract

In this paper, an auxiliary liquid modulated photonic crystal fiber (PCF) refractive index (RI) sensor based on local surface plasmon resonance (LSPR) is proposed, featuring an adjustable wide detection range and high RI sensitivity. The modulation of the electric field intensity distribution within the PCF is achieved by filling specific air holes with auxiliary liquid, leading to improved properties of the PCF-LSPR sensor. Moreover, the detection range of the sensor can be tailored by adjusting the RI of the auxiliary liquid. Using the full-vector finite element method (FEM), simulations of sensor performance are conducted. Results demonstrate that with an auxiliary liquid RI of 1.41, the sensor achieves a maximum RI sensitivity of 52438.02 nm/RIU and a detection range of 1.27–1.41. Similarly, with an auxiliary liquid RI of 1.43, the sensor achieves a maximum RI sensitivity of 46611.18 nm/RIU and maintains a detection range of 1.23–1.41. This approach allows for customization without altering the sensor geometry, facilitating the adjustment of the auxiliary liquid RI based on specific sensing requirements. Consequently, it offers tailored solutions for various sensing needs, thereby expanding the potential applications of PCF-LSPR sensors.

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来源期刊

Journal of Russian Laser Research 物理-光学

CiteScore

1.50

自引率

22.20%

发文量

审稿时长

2 months

期刊介绍： The journal publishes original, high-quality articles that follow new developments in all areas of laser research, including: laser physics; laser interaction with matter; properties of laser beams; laser thermonuclear fusion; laser chemistry; quantum and nonlinear optics; optoelectronics; solid state, gas, liquid, chemical, and semiconductor lasers.