KUO-CHIH CHUANGMa, Chien-ChingChien-ChingMa2025-09-242025-09-242010https://www.scopus.com/inward/record.uri?eid=2-s2.0-79960575554&doi=10.1049%2Fcp.2010.1144&partnerID=40&md5=bfc70ec05e5de108f11379e75f398a7bhttps://scholars.lib.ntu.edu.tw/handle/123456789/7324289th International Conference on Optical Communications and Networks, ICOCN 2010. Nanjing. Conference code: 84932We demonstrate an all-fiber three-dimensional dynamical measurement system as well as a gluing concept for setting up fiber Bragg grating (FBG) displacement or strain sensors with high sensitivity. To show the dynamic measurement ability of the proposed system, the multidimensional transient elastic wave propagation in an Aluminum thick square plate subjected to impact loadings is investigated. The proposed system employs an FBG filter as well as a long-period fiber grating (LPFG)-based wavelength-optical intensity modulation technique. To verify the dynamic sensing ability of the proposed sensing system, a non-contact laser Doppler vibrometer (LDV) as well as traditional strain gauges are employed to compare the transient results measured by the FBG sensors. Frequency contents of the transient in-plane displacement and strain responses are compared to further demonstrate the dynamic sensing ability of the FBG sensors.Fiber Bragg Grating (fbg)In-planeIntensity Modulation TechniqueLong-period Fiber Grating (lpfg)Out-of-planeFiber Bragg Grating (fbg)In-planeIntensity Modulation TechniqueLong Period Fiber GratingOut-of-planeDiffraction GratingsElastic WavesElectric Sensing DevicesFiber Bragg GratingsFiber Optic ComponentsFrequency ModulationGagesLaser Doppler VelocimetersOptical CommunicationSensorsSoil Structure InteractionsWave PropagationFibersconference paper10.1049/cp.2010.11442-s2.0-79960575554