Loading [MathJax]/extensions/MathMenu.js
Polarization-Maintaining Fiber Long-Period Grating Based Vector Curvature Sensor | IEEE Journals & Magazine | IEEE Xplore

Polarization-Maintaining Fiber Long-Period Grating Based Vector Curvature Sensor


Abstract:

We propose and demonstrate an optical fiber vector curvature sensor based on a long-period fiber grating (LPFG) inscribed in Panda type polarization-maintaining fiber (PM...Show More

Abstract:

We propose and demonstrate an optical fiber vector curvature sensor based on a long-period fiber grating (LPFG) inscribed in Panda type polarization-maintaining fiber (PMF) using CO2-laser heating and tapering system. The uniform heating approach removes the necessity of CO2-laser exposure alignment along the axis of PMFs during grating fabrication. A serial of PMF-LPFGs with grating period from 350 to 490 μm with a step of 20 μm have been fabricated experimentally. The curvature response of the fast and slow axis resonance dips for the LPFG with a period of 450 μm was investigated in the curvature range from 0 to 4.137 m-1 at four bending orientations. The maximum curvature sensitivities were measured to be 9.26 and -6.89 nm/m-1 for the fast and slow axis LP15 modes, respectively. The sensor can achieve 2-dimensional bending direction recognition. The proposed grating has potential application as a vector curvature sensor.
Published in: IEEE Photonics Technology Letters ( Volume: 33, Issue: 7, 01 April 2021)
Page(s): 358 - 361
Date of Publication: 26 February 2021

ISSN Information:

Funding Agency:


References

References is not available for this document.