Novel long-period fiber grating torsion sensor

作者：Wang Yiping^*; Rao Yunjiang; Hu Aizi; Zeng Xiangkai; Ran Zengling; Zhu Tao

来源：Acta Optica Sinica, 2002, 22(9): 1096-1099.

• Long period fiber gratings
• Optical fiber sensors
• Torsion sensors
• Twist rate

A novel torsion sensor based on a long-period fiber grating (PLFG) written by high-frequency CO2 laser pulses is demonstrated. The resonant wavelength shifts linearly toward longer wavelength as the LPFG is twisted counterclockwise. 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.

• 出版日期2002
• 单位重庆大学