Highly Sensitive Dual-Core Microstructured Fiber Sensor Operating near the Dispersion Turning Point

Zhichao Zhang, Jinhui Yuan, Shi Qiu, Chao Mei, Xian Zhou, Qiang Wu, Binbin Yan, Kuiru Wang, Xinzhu Sang, Chongxiu Yu

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

In this paper, a highly sensitive dual-core microstructured fiber (DC-MSF) sensor is proposed. Because of the adjustable dispersion characteristic of the DC-MSF, the group refractive index (RI) difference between the <italic>y</italic>-polarization odd and even supermodes could achieve the zero value at the dispersion turning point, which makes the DC-MSF sensor have a high sensitivity. The simulation results show that the sensitivity can be up to 52875 nm/RIU around the RI of 1.4, the operating bandwidth of sensitivity over 104 nm/RIU is 625 nm, and the operating bandwidth of sensitivity over 105 nm/RIU is 100 nm. Moreover, the DC-MSF can also be used as a temperature sensor by coating the polydimethylsiloxane on the surface, and the sensitivity can be up to 23.12 nm/&#x00B0;C around 22 &#x00B0;C. The detectable RI and temperature ranges of the proposed DC-MSF sensor are 1.375-1.425 and -15-95 &#x00B0;C, respectively.

Original languageEnglish
Pages (from-to)10489-10499
Number of pages11
JournalIEEE Sensors Journal
Volume23
Issue number10
Early online date10 Apr 2023
DOIs
Publication statusPublished - 15 May 2023

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