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International Journal of Scientific and Engineering Research
ISSN Online 2229-5518
ISSN Print: 2229-5518 5    
Website: http://www.ijser.org
scirp IJSER >> Volume 3,Issue 5,May 2012
Design of a Rectangular Plate Optical Pressure Sensor Waveguide with Integrated Bragg Grating
Full Text(PDF, )  PP.1I03-1I06  
Author(s)
Meenakshi Singh, R. Sivacoumar, Zachariah C. Alex
KEYWORDS
Wave guide, Reflectivity, Bragg Grating, Chirped Grating, Tilted Grating.
ABSTRACT
This paper presents the design and simulation of a rectangular plate optical pressure sensor waveguide. The waveguide has a nano-scale Bragg grating introduced on the upper half area. The Bragg grating shows a considerable deformation, when it is subjected to tangential strain, which forms the basic sensing principal for the design. The free space wavelength of 1.55µm and Bragg spacing of 0.5µm is used. The performance of the Bragg sensor for different types of grating is also observed and compared. The maximum sensitivity counted for a pressure of 300bar was about 2.436dBm/µm. After analyzing the simulation results of types of grating, it is found that chirped fiber grating gives the better reflectivity, with maximum suppressed side lobes. The design is simulated using COMSOL Multiphysics 3.2a.
References
[1]GiulioFragiacomo, Kasper Reck, LasseLorenzen and Erik V. Thomsen, “Novel Designs for Application Specific MEMS Pressure Sensors” Sensors 2010, 10, 9541-9563; doi:10.3390/s101109541

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[3] Liquid Men, Ping Lu, and Qiying Chen, “Fiber Bragg Grating Sensor for Simultaneous Measurement of Multiple Parameters”, 2009 OSA/CLEO/IQEC 2009.

[4] Reck, K., Almind, N. S, Mar, M. D, Hbner, J.; Hansen O. , Thomsen , E.V. “Design and modelingof an all-optical frequency modulated MEMS strain sensor using nanoscale Bragg gratings".IEEE Sens. J.873-877, 2010.

[5] Kasper Reck , Erik V. Thomsen and Ole Hansen, “All-Optical Frequency Modulated High Pressure MEMS Sensorfor Remote and Distributed Sensing” , vol. 11, 10615-10623, doi:10.3390/s111110615, Sensors 2

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