TY - JOUR
T1 - Temperature-Insensitive Gas Pressure Sensor Based on Photonic Crystal Fiber Interferometer
AU - Chen, Ling
AU - Tian, Jiajun
AU - Wu, Qiang
AU - Li, Jiewen
AU - Yao, Yong
AU - Wang, Jiawei
N1 - Funding information: This work was supported in part by the National Natural Science Foundation of China (Nos. 61675055 and 62105080) and in part by the Shenzhen Science and Technology Program Project Nos. JCYJ20190806143818818, RCYX20221008092907027 and GXWD20201230155427003-20200731103843002).
PY - 2023/7/15
Y1 - 2023/7/15
N2 - A temperature-insensitive gas pressure sensor was proposed and experimentally investigated. This sensor was based on a photonic crystal fiber (PCF) sandwiched between two single-mode fibers, where the impact of length on the performance of the sensor has been studied. Air holes of PCF were employed as gas or liquid inlet and outlet channels which provide the medium for direct interaction between the light transmitted in the fiber and the target gases. The experimental results show that the length of PCF has little effect on the sensitivity to gas pressure. The photonic crystal fiber interferometer (PCFI) has a high gas pressure sensitivity of 2.39 nm/MPa when the gas pressure increases from 100 to 900 kPa. The demonstrated gas pressure sensor has excellent stability and reversibility with negligible temperature cross-sensitivity. The proposed PCFI can also be used for liquid sample detection with high refractive index (RI) sensitivity of 3026 nm/RI unit (RIU) when the length of PCF is 1 cm at an RI range of 1.334-1.34. Therefore, the proposed PCFI holds a great potential in applications for chemical gas leakage detection and biochemical sensing.
AB - A temperature-insensitive gas pressure sensor was proposed and experimentally investigated. This sensor was based on a photonic crystal fiber (PCF) sandwiched between two single-mode fibers, where the impact of length on the performance of the sensor has been studied. Air holes of PCF were employed as gas or liquid inlet and outlet channels which provide the medium for direct interaction between the light transmitted in the fiber and the target gases. The experimental results show that the length of PCF has little effect on the sensitivity to gas pressure. The photonic crystal fiber interferometer (PCFI) has a high gas pressure sensitivity of 2.39 nm/MPa when the gas pressure increases from 100 to 900 kPa. The demonstrated gas pressure sensor has excellent stability and reversibility with negligible temperature cross-sensitivity. The proposed PCFI can also be used for liquid sample detection with high refractive index (RI) sensitivity of 3026 nm/RI unit (RIU) when the length of PCF is 1 cm at an RI range of 1.334-1.34. Therefore, the proposed PCFI holds a great potential in applications for chemical gas leakage detection and biochemical sensing.
KW - Gas pressure
KW - mode interferometer
KW - optical fiber sensor
KW - photonic crystal fiber (PCF)
KW - temperature cross-sensitivity
UR - https://www.scopus.com/pages/publications/85162643043
U2 - 10.1109/jsen.2023.3283249
DO - 10.1109/jsen.2023.3283249
M3 - Article
SN - 1530-437X
VL - 23
SP - 15637
EP - 15643
JO - IEEE Sensors Journal
JF - IEEE Sensors Journal
IS - 14
ER -