volume | PIER Journals

Abstract

According to the Coarse Wavelength Division Multiplexing (CWDM) wavelength dependent transmission characteristics, a wide range fiber Bragg grating (FBG) demodulation method is proposed and experimentally demonstrated in this paper. The relationship between system input and output is obtained through analysis, and verified experimentally. Particularly the influence of light source power on demodulation precision and calibration value is analyzed. The wavelength demodulation range of the system is about 10 nm, which can realize the measurement of 8000με; The precision can be 3~5 pm. Since the system is compact, low cost and passive, it is able to be integrated as a portable demodulation module.

1. Kersey, A. D., M. D. Davis, H. J. Patrick, et al. "Fiber grating sensor," IEEE Journal of Lightwave Technology, Vol. 15, 44221463, 1997.
doi:10.1109/50.618377 Google Scholar

2. Rao, Y. J., "In-fibre Bragg grating sensor," Measurement Science Technology, Vol. 8, 3552375, 1997. Google Scholar

3. Rizkalla, S. H., A. A. Mufti, and G. Tadros, "Recent innovation for concrete highway bridges in Canada," International SAMPE Symposium and Exhibition, Vol. 42, No. 1, 281-287, Anaheim, CA, USA, 1997.. Google Scholar

4. Kersey, A. D., T. A. Berkoff, and W. W. Morey, "High resolution fibre grating based strain sensor with interferometric wavelength shift detection," Electron. Lett., Vol. 23, 236-238, 1992.
doi:10.1049/el:19920146 Google Scholar

5. Flavin, D. A., R. McBride, and J. D. C. Jones, "Short optical path scan interferometric interrogation of a fibre Bragg grating embedded in a composite," Electron. Lett., Vol. 33, No. 4, 319-321, 1997.
doi:10.1049/el:19970208 Google Scholar

6. Melle, S. M., A. T. Alavie, S. Karr, et al. "A Bragg grating-tuned fiber laser strain sensor system," IEEE Photonics Technology Letters, Vol. 5, No. 2, 263-266, 1993.
doi:10.1109/68.196025 Google Scholar

7. Geiger, H., M. G. Xu, and J. P. Dakin, "Multiplexed measurements of strain using short and long gauge length sensors," SPIE 1995, Vol. 2507, 25-34, 1995.
doi:10.1117/12.219628 Google Scholar

8. Davis, M. A. and A. D. Kersey, "All fiber Bragg grating strain-sensor demodulation technique using a wavelength division coupler," Electron. Lett., Vol. 30, No. 1, 75-77, 1994.
doi:10.1049/el:19940059 Google Scholar

9. Chung, S., J. Kim, B.-A. Yu, et al. "Afiber Bragg grating sensor demodulation technique using a polarization maintaining fiber loop mirror [J]," IEEE Photonics Technology Letters, Vol. 13, No. 12, 1343-1345, 2001.
doi:10.1109/68.969902 Google Scholar

10. Zhang, J., H. Zhao, and Y. Xiong, "A FBG sensor demodulation method based on an amplified spontaneous emission light source," Chinese Journal of Scientific Instrument, Vol. 27, No. 1, 118-121, 2006. Google Scholar

11. Wu, J.-W. and H.-B. Bao, "Amplification, compression and shaping of picosecond super-Gaussian optical pulse using MZISOAs configuration," Journal of Electromagnetic Waves and Applications, Vol. 21, No. 15, 2215-2228, 2007.
doi:10.1163/156939307783134308 Google Scholar

12. Biswas, A., "Stochastic perturbation of parabolic law optical solutions," Journal of Electromagnetic Waves and Applications, Vol. 21, No. 11, 1479-1488, 2007.
doi:10.1163/156939307782000262 Google Scholar

13. Rostami, A. and A. Yazdanpanah-Goharrizi, "A new method for classification and identification of complex fiber Bragg grating using the genetic algorithm," Progress In Electromagnetics Research, Vol. 75, 329-356, 2007.
doi:10.2528/PIER07061802 Google Scholar

14. Yang, T., S. Song, H. Dong, and R. Ba, "Waveguide structures for generation of terahertz radiation by electro-optical process in GaAs and ZnGeP₂ using 1.55 μm fiber laser pulses," Progress In Electromagnetics Research Letters, Vol. 2, 95-102, 2008.
doi:10.2528/PIERL07122806 Google Scholar

Mr. Meng He

Dr. Junfeng Jiang

Dr. Jing Han

Dr. Tiegen Liu