Time-Division Multiplexed Fiber Grating Vibration Sensor Array
分时复用光纤光栅振动传感器阵列

Combining 3×3 coupler based on Mach-Zehnder interferometer and tunable fiber Fabry-Perot filter, a time-division multiplexed fiber grating vibration sensor array is presented. FFP scans the FBGs connected on one fiber in series, and the reflected light of each FBG passes through FFP one by one. The vibration applied on FBG is measured by Mach-Zehnder interferometer. The results show that the vibration applied on each FBG can be measured by this way.