A multichannel heterodyne fiber optic vibrometer is demonstrated which can be operated at ranges in excess of 50m. The system is designed to measure periodic signals, impacts, rotation, 3D strain, and vibration mappin...A multichannel heterodyne fiber optic vibrometer is demonstrated which can be operated at ranges in excess of 50m. The system is designed to measure periodic signals, impacts, rotation, 3D strain, and vibration mapping. The displacement resolution of each channel exceeds 1 nm. The outputs from all channels are simultaneous, and the number of channels can be increased by using optical switches.展开更多
文摘A multichannel heterodyne fiber optic vibrometer is demonstrated which can be operated at ranges in excess of 50m. The system is designed to measure periodic signals, impacts, rotation, 3D strain, and vibration mapping. The displacement resolution of each channel exceeds 1 nm. The outputs from all channels are simultaneous, and the number of channels can be increased by using optical switches.
