Back to Search
Start Over
High Sensitive Directional Torsion Sensor Based on a Segmented Long-Period Fiber Grating
- Source :
- IEEE Photonics Technology Letters. 29:2179-2182
- Publication Year :
- 2017
- Publisher :
- Institute of Electrical and Electronics Engineers (IEEE), 2017.
-
Abstract
- A segmented long period fiber grating (LPFG)-based torsion sensor with both high sensitivity and ability to discriminate torsion direction is proposed and experimentally investigated. The sensor is made up of three spatial orthogonal short LPFGs by using a CO2 laser notched method. Experimental results show that the torsion sensitivities can reach −0.54 and 0.33 dB/(rad/m) in dip depth and 0.30 and −0.14 nm/(rad/m) in resonance wavelength for clockwise and counterclockwise, respectively, in a single polarization state. Torsion rate and torsion direction can be measured simultaneously by the sensor. Moreover, the temperature sensitivity of the sensor has been determined as 0.067 nm/°C. Therefore, the proposed segmented-LPFG would have great potential applications in engineering and fiber sensors.
- Subjects :
- Co2 laser
Materials science
Temperature sensitivity
business.industry
Torsion (mechanics)
02 engineering and technology
Single polarization
Long-period fiber grating
High sensitive
01 natural sciences
Atomic and Molecular Physics, and Optics
Electronic, Optical and Magnetic Materials
010309 optics
020210 optoelectronics & photonics
Optics
Fiber laser
0103 physical sciences
0202 electrical engineering, electronic engineering, information engineering
Electrical and Electronic Engineering
business
Refractive index
Subjects
Details
- ISSN :
- 19410174 and 10411135
- Volume :
- 29
- Database :
- OpenAIRE
- Journal :
- IEEE Photonics Technology Letters
- Accession number :
- edsair.doi...........55b4876488941be2408036b805bc4f79