Zhou Quan, Zhang Weigang, Chen Lei, Yan Tieyi, Zhang Liyu, Wang Li, Wang Biao
Opt Express. 2015 Sep 7;23(18):23877-86. doi: 10.1364/OE.23.023877.
A novel optical fiber torsion sensor head is proposed. A section of polarization-maintaining fiber (PMF) is spliced between single mode fiber (SMF), and a twist taper is fabricated by a commercial electric-arc fusion splicer in the middle of the PMF. The asymmetric characteristics are obtained by the twist taper so that a fiber torsion sensor with directional discrimination is fabricated. Due to the characteristics of the asymmetric structure, the torsion sensitivity for the twist rate from 0 rad/m to -8 rad/m reaches 2.392 nm/rad·m-1, and for the twist rate from 0 rad/m to 8 rad/m reaches 1.071 nm/rad·m-1 respectively.
提出了一种新型光纤扭转传感器头。在单模光纤（SMF）之间熔接一段保偏光纤（PMF），并利用商用电弧熔接机在PMF中间制作一个扭转锥。通过扭转锥获得不对称特性，从而制作出具有方向判别功能的光纤扭转传感器。由于不对称结构的特性，扭转率从0 rad/m到-8 rad/m时的扭转灵敏度达到2.392 nm/rad·m-1，扭转率从0 rad/m到8 rad/m时的扭转灵敏度分别达到1.071 nm/rad·m-1。
