Abstract
A new optical intensity-based sensing mechanism for the measurement of refractive index and minute displacement is proposed in this paper, which is based on modifying the amount of light coupled between two parallel long-period fiber gratings. The characteristics of this sensing mechanism with experiments and simulation results are demonstrated.
Article PDF
Similar content being viewed by others
References
A. M. Vengsarkar, P. J. Lemaire, J. B. Judkins, V. Bhatia, T. Erdogan, and J. E. Sipe, “Long-period fiber gratings as band-rejection filters,” J. Lightwave Technol., vol. 14, no. 1, pp. 58–65, 1996.
K. S. Chiang and Q. Liu, “Long-period gratings for application in optical communications,” in Proc. 5thInternational Conf. on Optical Communications and Networks and 2ndInternational Symposium on Advances and Trends in Fiber Optics and Applications(ICOCN/ATFO 2006), Chengdu, China, pp.128–133, 2006.
S. W. James and R. P. Tatam, “Optical fibre long-period grating sensors: characteristics and application,” Meas. Sci. Technol., vol. 14, no. 5, pp. R49–R61, 2003.
K. S. Chiang, Y. Liu, M. N. Ng, and S. P. Li, “Coupling between two parallel long-period fibre gratings,” Electron. Lett., vol. 36, no. 16, pp. 1408–1409, 2000.
K. S. Chiang, F. Y. M. Chan, and M. N. Ng, “Analysis of two parallel long-period fiber gratings,” J. Lightwave Technol., vol. 22, no. 5, pp. 1358–1366, 2004.
Y. H. Han, S. B. Lee, C. S. Kim, and M. Y. Jeong, “Tunable optical add-drop multiplexer based on long-period fiber gratings for coarse wavelength division multiplexing systems,” Opt. Lett., vol. 31, no. 6, pp. 703–705 2006.
M. J. Kim, Y. M. Jung, B. H. Kim, W. T. Han, and B. H. Lee, “Ultra-wide bandpass filter based on long-period fiber gratings and the evanescent field coupling between two fibers,” Opt. Express, vol. 15, no. 17, pp. 10855–10862, 2007.
Y. Liu, K. S. Chiang, R. J. Rao, Z. L. Ran, and T. Zhu, “Light coupling between two parallel CO2-laser written long-period fiber gratings,” Opt. Express, vol. 15, no. 26, pp. 17645–17651, 2007.
Y. Liu and K. S. Chiang, “Broad-band optical coupler based on evanescent-field coupling between three parallel long-period fiber gratings,” IEEE Photon. Technol. Lett., vol. 18, no. 1, pp. 229–231, 2006.
Y. Liu, K. S. Chiang, and Q. Liu, “Symmetric 3 × 3 optical coupler using three parallel long-period fiber gratings,” Opt. Express, vol. 15, no. 10, pp. 6494–6499, 2007.
K. S. Chiang, “Development of long-period fiber grating coupling devices,” Appl. Opt., vol. 48, no. 25, pp. F61–F67, 2009.
K. S. Chiang, Y. Liu, M. N. Ng, and X. Dong, “Analysis of etched long-period fibre grating and its response to external refractive index,” Electron. Lett., vol. 36, no. 11, pp. 966–967, 2000.
Y. Liu, Q. Liu, and K. S. Chiang, “Optical coupling between a long-period fiber grating and a parallel tilted fiber Bragg grating,” Opt. Lett., vol. 34, no. 11, pp. 1726–17w28, 2009.
Z. Wang, K. S. Chiang, and Q. Liu, “Microwave photonic filter based on circulating a cladding mode in a fiber ring resonator,” Opt. Lett., vol. 35, no. 5, pp. 769–771, 2010.
Author information
Authors and Affiliations
Corresponding author
Additional information
This article is published with open access at Springerlink.com
Rights and permissions
Open Access This article is distributed under the terms of the Creative Commons Attribution 2.0 International License (https://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
About this article
Cite this article
Chiang, K.S., Liu, Y., Liu, Q. et al. Optical sensing based on light coupling between two parallel long-period fiber gratings. Photonic Sens 1, 204–209 (2011). https://doi.org/10.1007/s13320-010-0001-4
Received:
Revised:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s13320-010-0001-4