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

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2 Citations (Scopus)


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
Issue number10
Early online date10 Apr 2023
Publication statusPublished - 15 May 2023

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