A novel all-fiber micro-displacement sensor based on long period grating and tip structure

• 来源期刊: 光电子快报（英文版）
• 年，卷（期）: 2014,（3）
• 页码范围: 176-179
• 页数: 4页
• 语种: 中文
• DOI: 10.1007/s11801-014-4038-2

摘要

A novel high sensitivity all-fiber micro-displacement sensor is proposed and experimentally demonstrated.This sensor consists of a long period fiber gating and a fiber tip,which is achieved only by a commercial arc discharge fusion splicer,and thus possesses a lower cost.The wavelength sensitivity of the proposed sensor could be up to 934 pm/μm,which is four times higher than that of the long period fiber grating (LPFG) with an air cavity structure.The intensity change sensitivity is-1.973 dB/μm.