Two-dimensional fiber-optic vector vibroscope using only one multi-mode tilted fiber grating

被引：0

作者：

Guo, Tuan ^{[1
]}

Ran, Yang ^{[1
]}

Tan, Yannan ^{[1
]}

Gao, Shuai ^{[1
]}

Sun, Lipeng ^{[1
]}

Guan, Bai-Ou ^{[1
]}

Albert, Jacques ^{[2
]}

机构：

[1] Jinan Univ, Inst Photon Technol, Guangzhou 510632, Guangdong, Peoples R China

[2] Carleton Univ, Dept Elect, Ottawa, ON, Canada

来源：

22ND INTERNATIONAL CONFERENCE ON OPTICAL FIBER SENSORS, PTS 1-3 | 2012年 / 8421卷

基金：

加拿大自然科学与工程研究理事会;

关键词：

Optical fiber sensor; vector vibroscope; fiber grating;

D O I：

10.1117/12.970483

中图分类号：

TP7 [遥感技术];

学科分类号：

081102 ; 0816 ; 081602 ; 083002 ; 1404 ;

摘要：

Orientation-recognized two-dimensional vibration sensor based on a polarization-controlled cladding-to-core recoupling is demonstrated experimentally. A compact structure in which a short section of multi-mode fiber stub containing a weakly tilted fiber Bragg grating (TFBG) is spliced to another single-mode fiber without any lateral offset. Several well defined lower-order cladding resonances in reflection show different polarization dependence due to the tilted grating vector excitation. Both orientation and amplitude of the vibration can be determined unambiguously via dual-path power detection of the orthogonal-polarimetric odd-cladding-modes. Meanwhile, the unwanted power fluctuations and temperature perturbations can be definitely removed via core mode monitoring.

引用

页数：4