基于侧边抛磨光纤的传感技术研究综述

Review of Sensing Technology Research Based on Side Polished Fiber

随着光纤微加工技术的发展,侧边抛磨光纤(side polished fiber,SPF)在光纤传感器领域开辟了一个新纪元。在普通通信光纤的基础上,通过完全或者部分去除一段长度的光纤包层形成传输光场的“泄漏窗口”,利用光场与物质相互作用来激发、控制、探测光纤纤芯中的传输光场,从而制备了各种基于倏逝场的传感器。优化光纤的抛磨参数和导模特性是实现高性能光纤传感器的关键。侧边抛磨光纤具有可靠的机械性能和极小的插入损耗、偏振相关损耗,使其成为研究“光纤上实验室”的优质平台。本文综述了基于侧边抛磨光纤传感器的原理、分类、研究进展和应用领域。

With the development of optical fiber microfabrication technology,side pol-ished fiber(SPF)has opened up a new era in fiber optic sensors.On the basis of ordinary communication fiber,the“leakage window”of the transmission light field is formed by completely or partially removing a length of fiber cladding.The light-matter interaction is used to excite,control,and detect the transmission light field in the fiber core to fab-ricate various sensors based on evanescent field.Optimizing the polishing parameters and guiding characteristics of the optical fiber is the key to realizing high-performance fiber optic sensors.The SPF has reliable mechanical properties,minimal insertion loss and polarization-dependent loss,making it a high-quality platform for research on the“lab on fiber”.This article reviews the principle,classification,research progress,and application prospects of the SPF-based fiber optic sensors.