Pressure Sensor Based on Mechanically Induced LPFG in Novel MSM Fiber Structure

Sunita Ugale, Vivekanand Mishra

Department of Electronics and Communication Engineering, S. V. National Institute of Technology, Surat, India.

DOI: 10.4236/opj.2013.33036                

Abstract

We have proposed and demonstrated experimentally a novel and simple pressure sensor based on mechanically induced long period optical fiber gratings. We report here for the first time to our knowledge the characterization of mechanically induced long period fiber gratings in novel multimode-singlemode-multimode fiber structure. The MLPFG induced in single mode fiber and multimode fibers are studied separately and the results are compared with MLPFG induced in MSM fiber structure. MLPFG in MSM structure has much greater sensitivity. We have obtained maximum transmission loss peak of around 18 dB, and the sensitivity of pressure sensor is 8 dB/Kg.

Keywords

Mechanically Induced Grating; Pressure Sensor; Sensitivity

Conflicts of Interest

The authors declare no conflicts of interest.

References

[1]	Y. Y. Zhao and J. C. Palais, “Simulation and Characteristics of Long-Period Fiber Bragg Grating Coherence Spectrum,” Journal of Lightwave Technology, Vol. 16, No. 4, 1998.
[2]	R. Sharma, R. Rohilla, M. Sharma and T. C. Manjunath, “Design and Simulation of Optical Fiber Bragg Grating Pressure Sensor for Minimum Attenuation Criteria,” Journal of Theoretical and Applied Information Technology, Vol. 5, No. 5, 2005, pp. 515-530.
[3]	S. Savin, M. J. F. Digonnet, G. S. Kino and H. J. Shaw, “Tunable Mechanically Induced Long Period Fiber Gratings,” Optics Letters, Vol. 25, No. 10, 2000, pp. 710-712. doi:10.1364/OL.25.000710
[4]	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,” Journal of Lightwave Technology, Vol. 14, No. 1, 1996, pp. 58-65.
[5]	T. Erdogan, “Fiber Grating Spectra,” Journal of Light wave Technology, Vol. 15, No. 8, 1997, pp. 1277-1294. doi:10.1109/50.618322
[6]	S. Savin, M. Digonnet, G. Kino and H. Shaw, “Tunable Mechanically Induced Long-Period Fiber Gratings,” Op tics Letters, Vol. 25, No. 10, 2000, pp. 710-712. doi:10.1364/OL.25.000710