Bending vector sensor based on Mach–Zehnder interferometer using S type fibre taper and lateral-offset. Issue 21 (29th November 2016)

• Record Type: Journal Article
• Authors: Zhang, Jianhao; Zhang, Weigang; Zhang, Yanxin; Wang, Biao; Xue, Yuqi; Yan, Tieyi; Chen, Lei; Wang, Li
• Is Part Of: Journal of modern optics. Volume 63:Issue 21(2016)
• Page Start: 2146
• Page End: 2150
• Publication Date: 2016-11-29
• Subjects: Fibre sensor -- Mach–Zehnder interferometer -- bending vector sensing -- S type fibre taper -- lateral-offset; Optics -- Periodicals; 535
• DOI: 10.1080/09500340.2016.1185177
• Languages: English
• ISSNs: 0950-0340

Abstract

Abstract: A novel, simple and highly sensitive bend vector sensor is proposed and experimentally demonstrated for directional bending measurement. This sensor consists of a lateral-offset and an S fibre taper processed through special fusion splicing method. The asymmetrical fibre structure of S fibre taper and lateral-offset determined a pair of directions along which the bending response to the transmission spectrum is different. Thus, it can be used for bending vector measurement. For a curvature range from −4 to +4 m −1, the bending sensitivities near 1550 nm reach 0.70807 and 0.99695 nm/m −1, respectively.