TY - JOUR
T1 - Fiber Optic Dual-Ring Michelson Interferometer-Based Detection Scheme for the Measurement of Dynamic Signals
AU - Jia, Jingshan
AU - Jiang, Yi
AU - Zhang, Liuchao
AU - Gao, Hongchun
AU - Jiang, Lan
N1 - Publisher Copyright:
© 1983-2012 IEEE.
PY - 2019/8/1
Y1 - 2019/8/1
N2 - A fiber optic dual-ring Michelson interferometer (DRMI) based detection scheme for the measurement of dynamic signals is proposed and experimentally demonstrated. The fiber optic sensor is a single mode fiber between two broadband fiber Bragg gratings (FBGs) with different center wavelengths. The two FBGs are connected to two output ports of a 3 × 3 coupler to compose a DRMI. High responsivity and wide frequency response range can be achieved at the same time. The scheme has high reliability, in which the undesirable external perturbation applied to interferometric arms is removed. A DRMI-based vibration sensor and a DRMI-based acoustic sensor are fabricated and experimentally investigated. For the DRMI-based vibration sensor, a responsivity of 12.8 rad/g is obtained, and the resonant frequency is 825 Hz. The minimum detectable acceleration is 54 μg Hz at 300 Hz. The acoustic sensor is used to detect signals in the frequency range of 0.5-19 kHz. The detection scheme has properties of wide frequency response range, high responsivity, and high reliability.
AB - A fiber optic dual-ring Michelson interferometer (DRMI) based detection scheme for the measurement of dynamic signals is proposed and experimentally demonstrated. The fiber optic sensor is a single mode fiber between two broadband fiber Bragg gratings (FBGs) with different center wavelengths. The two FBGs are connected to two output ports of a 3 × 3 coupler to compose a DRMI. High responsivity and wide frequency response range can be achieved at the same time. The scheme has high reliability, in which the undesirable external perturbation applied to interferometric arms is removed. A DRMI-based vibration sensor and a DRMI-based acoustic sensor are fabricated and experimentally investigated. For the DRMI-based vibration sensor, a responsivity of 12.8 rad/g is obtained, and the resonant frequency is 825 Hz. The minimum detectable acceleration is 54 μg Hz at 300 Hz. The acoustic sensor is used to detect signals in the frequency range of 0.5-19 kHz. The detection scheme has properties of wide frequency response range, high responsivity, and high reliability.
KW - Fiber optical sensor
KW - Michelson interferometer
KW - passive demodulation
KW - phase demodulator
UR - http://www.scopus.com/inward/record.url?scp=85069764669&partnerID=8YFLogxK
U2 - 10.1109/JLT.2019.2919706
DO - 10.1109/JLT.2019.2919706
M3 - Article
AN - SCOPUS:85069764669
SN - 0733-8724
VL - 37
SP - 3750
EP - 3755
JO - Journal of Lightwave Technology
JF - Journal of Lightwave Technology
IS - 15
M1 - 8725525
ER -
