光学学报, 2002, 22 (9): 1096, 网络出版: 2006-08-08
长周期光纤光栅扭曲传感器 下载: 520次
A Novel Long-Period Fiber Grating Torsion Sensor
摘要
发现用高频CO2激光写入的长周期光纤光栅的谐振波长会随光栅扭曲而线性变化.当顺时针扭曲时,谐振波长向长波方向漂移;逆时针扭曲时,谐振波长向短波方向漂移.该新型扭曲传感器不但能实现对扭曲率的直接测量,而且能判断扭曲方向,因此具有广泛的应用前景.
Abstract
A novel torsion sensor based on a long-period fiber grating (LPFG) written by high-frequency CO 2 laser pulses is demonstrated. The resonant wavelength shifts linearly toward longer wavelength as the LPFG is twisted clockwise, whereas it shifts toward linearly shorter wavelength as the LPFG is twisted anticlockwise. Such a torsion sensor can, not only measure the applied twist rate directly, but also determine the twist direction. Accordingly, this all-fiber absolute torsion sensor could find important engineering applications in the field of smart structures where the ability for the sensor to be embedded into the structure is critical.
王义平, 饶云江, 胡爱姿, 曾祥楷, 冉曾令, 朱涛. 长周期光纤光栅扭曲传感器[J]. 光学学报, 2002, 22(9): 1096. 王义平, 饶云江, 胡爱姿, 曾祥楷, 冉曾令, 朱涛. A Novel Long-Period Fiber Grating Torsion Sensor[J]. Acta Optica Sinica, 2002, 22(9): 1096.