Investigation of a Side-polished Fiber MZI and Its Sensing Performance
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Investigation of a Side-polished Fiber MZI and Its Sensing Performance. / Zhang, Ping; Liu, Bin; Liu, Juan; Xie, Cheng-Feng; Wan, Sheng-Peng; He, Xing-Dao; Zhang, Xinpu; Wu, Qiang.
In: IEEE Sensors Journal, Vol. 20, No. 11, 01.06.2020, p. 5909-5914.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Investigation of a Side-polished Fiber MZI and Its Sensing Performance
AU - Zhang, Ping
AU - Liu, Bin
AU - Liu, Juan
AU - Xie, Cheng-Feng
AU - Wan, Sheng-Peng
AU - He, Xing-Dao
AU - Zhang, Xinpu
AU - Wu, Qiang
N1 - Research funded by National Natural Science Foundation of China (6166500711864025), Natural Science Foundation of Jiangxi Province (20192ACBL2105120192ACB20031)
PY - 2020/6/1
Y1 - 2020/6/1
N2 - A novel all-fiber Mach–Zehnder interferometer (MZI), which consists of lateral core fusion splicing of a short section of side-polished single mode fiber (SMF) between two SMFs was proposed and demonstrated. A simple fiber side-polished platform was built to control the side polished depth through a microscope. The sensitivity of the fiber MZI structure to the surrounding refractive index (RI) can be greatly improved with the increase of the side-polished depth, but has no effect on the temperature sensitivity. The sensor with a polished depth of 44.2 μm measured RI sensitivity up to -118.0 nm/RIU (RI unit) in the RI range from 1.333 to 1.387, which agrees well with simulation results by using the beam propagation method (BPM). In addition, the fiber MZI structure also can achieve simultaneous measurement of both RI and temperature. These results show its potential for use in-line fiber type sensing application.
AB - A novel all-fiber Mach–Zehnder interferometer (MZI), which consists of lateral core fusion splicing of a short section of side-polished single mode fiber (SMF) between two SMFs was proposed and demonstrated. A simple fiber side-polished platform was built to control the side polished depth through a microscope. The sensitivity of the fiber MZI structure to the surrounding refractive index (RI) can be greatly improved with the increase of the side-polished depth, but has no effect on the temperature sensitivity. The sensor with a polished depth of 44.2 μm measured RI sensitivity up to -118.0 nm/RIU (RI unit) in the RI range from 1.333 to 1.387, which agrees well with simulation results by using the beam propagation method (BPM). In addition, the fiber MZI structure also can achieve simultaneous measurement of both RI and temperature. These results show its potential for use in-line fiber type sensing application.
KW - Fiber-optic
KW - side-polished
KW - Mach–Zehnder interferometer
KW - refractive index (RI)
U2 - 10.1109/JSEN.2020.2972929
DO - 10.1109/JSEN.2020.2972929
M3 - Article
VL - 20
SP - 5909
EP - 5914
JO - IEEE Sensors Journal
JF - IEEE Sensors Journal
SN - 1530-437X
IS - 11
ER -