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东京大学新科技研究中心K.Hotate副教授负责的研究小组开发出一种高灵敏的光纤干涉传感器,能够测量水和强电磁埸等特殊环境中的温度、振动,压力和声音。这种传感器,其引线光纤的一端接传感环路,另一端接基准环路。众所周知,普通光纤干涉传感器引线光纤部分会产生噪音,而此种新型传感器的基准环路中含有移频器,它能防止引线光纤所产生的噪音的混入。此种传感器为研制光纤地震仪奠定了基础,光纤地震仪首先能传感潮汐波的移动和海床地壳的变化。
The research team led by Associate Professor K. Hotate of the New Technology Research Center at the University of Tokyo has developed a highly sensitive optical fiber interference sensor capable of measuring temperature, vibration, pressure and sound in special environments such as water and strong electromagnetic waves. This sensor, one end of the lead fiber optic sensing loop, the other end of the reference loop. As we all know, ordinary fiber optic interference sensor lead fiber part of the noise, and the new sensor’s reference loop contains a frequency shifter, which prevents the lead fiber optic noise mixing. Such sensors laid the foundation for the development of optical seismometers. Optical seismometers can first detect the movement of tidal waves and the changes of the seabed crust.