Abstract
| Original language | English |
|---|---|
| Title of host publication | Fiber optic sensor technology and applications III |
| Editors | Michael A. Marcus, Brian Culshaw, John P. Dakin |
| Place of Publication | Philadelphia, PA (US) |
| Publisher | SPIE |
| Pages | 266-277 |
| Number of pages | 12 |
| DOIs | |
| Publication status | Published - 2004 |
| Event | Conference on Fiber Optic Sensor Technology and Applications III - Philadelphia, United States Duration: 26 Nov 2004 → 28 Nov 2004 |
Publication series
| Name | SPIE proceedings |
|---|---|
| Publisher | SPIE |
| Volume | 5589 |
| ISSN (Electronic) | 0277-786X |
Conference
| Conference | Conference on Fiber Optic Sensor Technology and Applications III |
|---|---|
| Country | United States |
| City | Philadelphia |
| Period | 26/11/04 → 28/11/04 |
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Bibliographical note
Thomas D. Allsop ; T. Earthrowl ; H. Dobb ; V. Mezentsev ; A. Gillooly ; D.J. Webb and I. Bennion "The spectral sensitivity of long-period gratings fabricated in elliptical core D-shaped optical fiber", Proc. SPIE 5589, Fiber Optic Sensor Technology and Applications III, 266 (December 14, 2004);Copyright 2004 Society of Photo-Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.
http://dx.doi.org/10.1117/12.569312
Keywords
- long-period fibre gratings
- temperature measurement
- curvature measurement
- d-shaped optical fibre
Cite this
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The spectral sensitivity of long period gratings fabricated in elliptical core D-shaped optical fiber. / Allsop, Thomas D.P.; Earthgrowl, Timothy; Dobb, Helen; Mezentsev, Vladimir; Gillooly, Andrew; Webb, David J.; Bennion, Ian.
Fiber optic sensor technology and applications III. ed. / Michael A. Marcus; Brian Culshaw; John P. Dakin. Philadelphia, PA (US) : SPIE, 2004. p. 266-277 (SPIE proceedings; Vol. 5589).Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
TY - GEN
T1 - The spectral sensitivity of long period gratings fabricated in elliptical core D-shaped optical fiber
AU - Allsop, Thomas D.P.
AU - Earthgrowl, Timothy
AU - Dobb, Helen
AU - Mezentsev, Vladimir
AU - Gillooly, Andrew
AU - Webb, David J.
AU - Bennion, Ian
N1 - Thomas D. Allsop ; T. Earthrowl ; H. Dobb ; V. Mezentsev ; A. Gillooly ; D.J. Webb and I. Bennion "The spectral sensitivity of long-period gratings fabricated in elliptical core D-shaped optical fiber", Proc. SPIE 5589, Fiber Optic Sensor Technology and Applications III, 266 (December 14, 2004); Copyright 2004 Society of Photo-Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited. http://dx.doi.org/10.1117/12.569312
PY - 2004
Y1 - 2004
N2 - Long period gratings (LPGs) were written into a D-shaped optical fibre, which has an elliptical core with a W-shaped refractive index profile. The LPG's attenuation bands were found to be sensitive to the polarisation of the interrogating light with a spectral separation of about 15nm between the two orthogonal polarisation states. In addition, two spectrally overlapping attenuation bands corresponding to orthogonal polarisation states were observed; modelling successfully reproduced this spectral feature. The spectral sensitivity of both orthogonal states was experimentally measured with respect to temperature, surrounding refractive index, and directional bending. These LPG devices produced blue and red wavelength shifts of the stop-bands due to bending in different directions. The measured spectral sensitivities to curvatures, d?/dR , ranged from -3.56nm m to +6.51nm m. The results obtained with these LPGs suggest that this type of fibre may be useful as a shape/bend sensor. It was also demonstrated that the neighbouring bands could be used to discriminate between temperature and bending and that overlapping orthogonal polarisation attenuation bands can be used to minimise error associated with polarisation.
AB - Long period gratings (LPGs) were written into a D-shaped optical fibre, which has an elliptical core with a W-shaped refractive index profile. The LPG's attenuation bands were found to be sensitive to the polarisation of the interrogating light with a spectral separation of about 15nm between the two orthogonal polarisation states. In addition, two spectrally overlapping attenuation bands corresponding to orthogonal polarisation states were observed; modelling successfully reproduced this spectral feature. The spectral sensitivity of both orthogonal states was experimentally measured with respect to temperature, surrounding refractive index, and directional bending. These LPG devices produced blue and red wavelength shifts of the stop-bands due to bending in different directions. The measured spectral sensitivities to curvatures, d?/dR , ranged from -3.56nm m to +6.51nm m. The results obtained with these LPGs suggest that this type of fibre may be useful as a shape/bend sensor. It was also demonstrated that the neighbouring bands could be used to discriminate between temperature and bending and that overlapping orthogonal polarisation attenuation bands can be used to minimise error associated with polarisation.
KW - long-period fibre gratings
KW - temperature measurement
KW - curvature measurement
KW - d-shaped optical fibre
UR - http://www.scopus.com/inward/record.url?scp=17044404329&partnerID=8YFLogxK
UR - http://proceedings.spiedigitallibrary.org/proceeding.aspx?articleid=1319966
U2 - 10.1117/12.569312
DO - 10.1117/12.569312
M3 - Conference contribution
T3 - SPIE proceedings
SP - 266
EP - 277
BT - Fiber optic sensor technology and applications III
A2 - Marcus, Michael A.
A2 - Culshaw, Brian
A2 - Dakin, John P.
PB - SPIE
CY - Philadelphia, PA (US)
ER -