Abstract
A novel high-birefringence (Hi-Bi) fiber torsion sensor demodulated by a Hi-Bi fiber Bragg grating (FBG) is proposed in this study. The characteristics of a twisted Hi-Bi fiber sensor are analyzed by using the Jones matrix. As a result, the ratio of intensities from two reflecting Bragg wavelengths is varied with the twist angle in the measured Hi-Bi fiber. The advantages of the novel torsion sensor is concluded as (1) insensitivity to intensity variations from the light source, (2) insensitivity to the torsion gauge length, (3) insensitivity to the thermal variation and external axial strain, (4) absolute measurement in the twist angle, and (5) multiplexing. Therefore, it could be applicable for the smart structure applications, especially in bridges or the other civil structures. However, free from the transverse loading in order to prevent the birefringence change in the twisted Hi-Bi fiber is necessary.
| Original language | English |
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| Pages | 885-888 |
| Number of pages | 4 |
| Publication status | Published - 2002 Dec 1 |
| Event | First IEEE International Conference on Sensors - IEEE Sensors 2002 - Orlando, FL, United States Duration: 2002 Jun 12 → 2002 Jun 14 |
Other
| Other | First IEEE International Conference on Sensors - IEEE Sensors 2002 |
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| Country/Territory | United States |
| City | Orlando, FL |
| Period | 02-06-12 → 02-06-14 |
All Science Journal Classification (ASJC) codes
- Electrical and Electronic Engineering