【摘要】 利用多模光纤的微弯特性 ,提出并实现了一种新颖的缠绕式光纤扭角传感装置 ,其扭角测量范围大于 90°.给出了该装置的基本实验原理 .研究表明多模光纤的微弯损耗对扭角变化响应非常灵敏 ,其灵敏度可达 1 d B/ 1°.并且实验与理论符合得很好更多还原

【Abstract】 Using the microbend characteristic of the multimode optical fiber,a novel twisted fiber torsion sensor is demonstrated firstly.The range of torsional angle is from 0°to 90°.The experimental principle is analyzed ,and the experiment shows that the microbend loss of the multimode optical fiber is sensitive to the change of torsion.The sensitivity is 1dB/1°.The experiment results in well agreement with the theory.更多还原