TY - JOUR
T1 - Highly Sensitive Dual-Core Microstructured Fiber Sensor Operating near the Dispersion Turning Point
AU - Zhang, Zhichao
AU - Yuan, Jinhui
AU - Qiu, Shi
AU - Mei, Chao
AU - Zhou, Xian
AU - Wu, Qiang
AU - Yan, Binbin
AU - Wang, Kuiru
AU - Sang, Xinzhu
AU - Yu, Chongxiu
PY - 2023/4/10
Y1 - 2023/4/10
N2 - 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 y-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/°C around 22 °C. The detectable RI and temperature ranges of the proposed DC-MSF sensor are 1.375-1.425 and -15-95 °C, respectively.
AB - 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 y-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/°C around 22 °C. The detectable RI and temperature ranges of the proposed DC-MSF sensor are 1.375-1.425 and -15-95 °C, respectively.
KW - Dispersion turning point
KW - In-Line fiber interferometer
KW - Interference
KW - Optical fiber couplers
KW - Optical fiber dispersion
KW - Optical fiber sensor
KW - Optical fiber sensors
KW - Refractive index sensor
KW - Sensitivity
KW - Sensors
KW - Temperature sensor
KW - Temperature sensors
UR - http://www.scopus.com/inward/record.url?scp=85153333538&partnerID=8YFLogxK
U2 - 10.1109/jsen.2023.3264450
DO - 10.1109/jsen.2023.3264450
M3 - Article
JO - IEEE Sensors Journal
JF - IEEE Sensors Journal
SN - 1530-437X
ER -