Details
| Original language | English |
|---|---|
| Title of host publication | Optical Components and Materials XX |
| Editors | Shibin Jiang, Michel J. Digonnet |
| Publisher | SPIE |
| ISBN (electronic) | 9781510659391 |
| Publication status | Published - 14 Mar 2023 |
| Event | Optical Components and Materials XX 2023 - San Francisco, United States Duration: 30 Jan 2023 → 31 Jan 2023 |
Publication series
| Name | Proceedings of SPIE - The International Society for Optical Engineering |
|---|---|
| Volume | 12417 |
| ISSN (Print) | 0277-786X |
| ISSN (electronic) | 1996-756X |
Abstract
We report on the systematic investigation of a polymer-optical fiber Bragg grating (POFBG) sensor for shape deformation with regard to its temperature and humidity sensitivity under various bending conditions and additionally with regard to strain and torsion, which are all relevant effects in the designated application in a novel 3D shape detection sensor system. The concept relies on the fast and simple inscription of Bragg gratings in graded-index multimode cyclic transparent optical polymer (CYTOP) fibers with the phase mask method and a krypton-fluoride excimer laser in the UV. When the fibers undergo deformation such as strain, torsion or bending or are affected by environmental effects, the lattice constant of the FBGs as well as the optical components can change and the spectral position of the Bragg peak shifts accordingly into the red or blue wavelength region. While the cross-sensitivity to humidity is relatively small over the full range from 10% to 98% relative humidity and, therefore, negligible, the cross-sensitivity to temperature is relevant and lies in the range from 17.2 pm/K (straight position) to 45.6 pm/K (upward bending position). The effect of strain on the sensor can be observed by the shift of the Bragg peak to the red wavelength region. Also, the impact from torsion on the sensor is clearly observable, even after multiple turns of the fiber, and the functionality of the sensor is preserved when plastic deformation occurs. The presented results offer the potential to use the sensor in everyday applications and specifically to track the motion of human hands. For example, sensor gloves can be used to detect early stage of motion impairment of focal dystonia patients in medical diagnostics or for augmented and virtual reality devices.
Keywords
- Fiber Bragg gratings, fiber optics, optical bend sensor, polymer optical fiber, strain, temperature, torsion, UV excimer laser
ASJC Scopus subject areas
- Materials Science(all)
- Electronic, Optical and Magnetic Materials
- Physics and Astronomy(all)
- Condensed Matter Physics
- Computer Science(all)
- Computer Science Applications
- Mathematics(all)
- Applied Mathematics
- Engineering(all)
- Electrical and Electronic Engineering
Cite this
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Optical Components and Materials XX. ed. / Shibin Jiang; Michel J. Digonnet. SPIE, 2023. 1241707 (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 12417).
Research output: Chapter in book/report/conference proceeding › Conference contribution › Research › peer review
}
TY - GEN
T1 - Characterisation of a Polymer-Based Eccentric FBG 3D Shape Deformation Sensor
AU - Leffers, Lennart
AU - Roth, Bernhard
AU - Overmeyer, Ludger
N1 - Funding Information: Financial support by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) under Germany’s Excellence Strategy within the Cluster of Excellence PhoenixD (EXC 2122, Project ID 390833453) is acknowledged.
PY - 2023/3/14
Y1 - 2023/3/14
N2 - We report on the systematic investigation of a polymer-optical fiber Bragg grating (POFBG) sensor for shape deformation with regard to its temperature and humidity sensitivity under various bending conditions and additionally with regard to strain and torsion, which are all relevant effects in the designated application in a novel 3D shape detection sensor system. The concept relies on the fast and simple inscription of Bragg gratings in graded-index multimode cyclic transparent optical polymer (CYTOP) fibers with the phase mask method and a krypton-fluoride excimer laser in the UV. When the fibers undergo deformation such as strain, torsion or bending or are affected by environmental effects, the lattice constant of the FBGs as well as the optical components can change and the spectral position of the Bragg peak shifts accordingly into the red or blue wavelength region. While the cross-sensitivity to humidity is relatively small over the full range from 10% to 98% relative humidity and, therefore, negligible, the cross-sensitivity to temperature is relevant and lies in the range from 17.2 pm/K (straight position) to 45.6 pm/K (upward bending position). The effect of strain on the sensor can be observed by the shift of the Bragg peak to the red wavelength region. Also, the impact from torsion on the sensor is clearly observable, even after multiple turns of the fiber, and the functionality of the sensor is preserved when plastic deformation occurs. The presented results offer the potential to use the sensor in everyday applications and specifically to track the motion of human hands. For example, sensor gloves can be used to detect early stage of motion impairment of focal dystonia patients in medical diagnostics or for augmented and virtual reality devices.
AB - We report on the systematic investigation of a polymer-optical fiber Bragg grating (POFBG) sensor for shape deformation with regard to its temperature and humidity sensitivity under various bending conditions and additionally with regard to strain and torsion, which are all relevant effects in the designated application in a novel 3D shape detection sensor system. The concept relies on the fast and simple inscription of Bragg gratings in graded-index multimode cyclic transparent optical polymer (CYTOP) fibers with the phase mask method and a krypton-fluoride excimer laser in the UV. When the fibers undergo deformation such as strain, torsion or bending or are affected by environmental effects, the lattice constant of the FBGs as well as the optical components can change and the spectral position of the Bragg peak shifts accordingly into the red or blue wavelength region. While the cross-sensitivity to humidity is relatively small over the full range from 10% to 98% relative humidity and, therefore, negligible, the cross-sensitivity to temperature is relevant and lies in the range from 17.2 pm/K (straight position) to 45.6 pm/K (upward bending position). The effect of strain on the sensor can be observed by the shift of the Bragg peak to the red wavelength region. Also, the impact from torsion on the sensor is clearly observable, even after multiple turns of the fiber, and the functionality of the sensor is preserved when plastic deformation occurs. The presented results offer the potential to use the sensor in everyday applications and specifically to track the motion of human hands. For example, sensor gloves can be used to detect early stage of motion impairment of focal dystonia patients in medical diagnostics or for augmented and virtual reality devices.
KW - Fiber Bragg gratings
KW - fiber optics
KW - optical bend sensor
KW - polymer optical fiber
KW - strain
KW - temperature
KW - torsion
KW - UV excimer laser
UR - http://www.scopus.com/inward/record.url?scp=85159785277&partnerID=8YFLogxK
U2 - 10.1117/12.2647687
DO - 10.1117/12.2647687
M3 - Conference contribution
AN - SCOPUS:85159785277
T3 - Proceedings of SPIE - The International Society for Optical Engineering
BT - Optical Components and Materials XX
A2 - Jiang, Shibin
A2 - Digonnet, Michel J.
PB - SPIE
T2 - Optical Components and Materials XX 2023
Y2 - 30 January 2023 through 31 January 2023
ER -