Highly Sensitive Dual-Core PCF Based Plasmonic Refractive Index Sensor for Low Refractive Index Detection

被引：63

作者：

Haque, Emranul ^{[1
]}

Mahmuda, Subaha ^{[2
]}

Hossein, Md Anwar ^{[3
]}

Nguyen Hoang Hai ^{[4
]}

Namihira, Yoshinori ^{[5
]}

Ahmed, Feroz ^{[1
]}

机构：

[1] Independent Univ, Dept Elect & Elect Engn, Dhaka 1229, Bangladesh

[2] Primeasia Univ, Dept Elect & Elect Engn, Dhaka 1213, Bangladesh

[3] Green Univ Bangladesh, Dept Elect & Elect Engn, Dhaka 1207, Bangladesh

[4] Hanoi Univ Sci & Technol, Sch Elect & Telecommun, Hanoi 100000, Vietnam

[5] Univ Ryukyus, Nishihara, Okinawa 1510066, Japan

来源：

IEEE PHOTONICS JOURNAL | 2019年 / 11卷 / 05期

关键词：

Surface Plasmon Resonance; Photonic crystal fiber; Refractive index; RESONANCE SENSOR; OPTICAL-FIBER; BIREFRINGENT; BIOSENSOR;

D O I：

10.1109/JPHOT.2019.2931713

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A highly sensitive surface plasmon resonance (SPR) sensor on a dual-core photonic crystal fiber (PCF) for low refractive index (RI) detection is presented in this paper. Plasmonic material silver (Ag) is deposited outside of the fiber structure to detect changes of the surrounding medium's refractive index. To prevent oxidation a thin layer of titanium dioxide (TiO2) is employed on top of the silver. The sensor shows maximum wavelength sensitivity and amplitude sensitivity of 116,000 nm/RIU and 2452 RIU-1 with corresponding resolutions (R) of 8.62 x 10(-7) and 5.55 x 10(-6) RIU, respectively. A thorough study of the relevant literature yielded that these attained sensitivities in both interrogation methods are the highest among reported PCF-SPR sensors to date. In addition, the sensor possesses a very high figure of merit of 2320 in the sensing range of 1.29 to 1.39. Therefore, it would be a suitable candidate for pharmaceutical inspection, organic chemical sensing, and biosensing and other analytes detection.

引用

页数：9

共 27 条

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