Fiber Bragg grating accelerometer with enhanced sensitivity

Abstract A cantilever based optical accelerometer with enhanced performance characteristics has been proposed. The sensitivity of the accelerometer has efficiently been enhanced by about twice as compared to the conventional design by tailoring the effective distance between the sensor axis to the neutral axis of the cantilever. The sensitivity enhancement has been done without affecting the characteristic resonant frequency of the system. A sensitivity of about 450 pm/g is achieved for a specific cantilever-mass arrangement. The architecture requires much simpler design as compared to optical accelerometers based on similar working principle and having sensitivities of this order.

[1]  H. Varum,et al.  Optical Fiber Accelerometer System for Structural Dynamic Monitoring , 2009, IEEE Sensors Journal.

[2]  Ping Shum,et al.  Temperature-insensitive accelerometer based on a strain-chirped FBG , 2010 .

[3]  G. Johnson,et al.  Flexural beam-based fiber Bragg grating accelerometers , 1998, IEEE Photonics Technology Letters.

[4]  Sunil K. Khijwania,et al.  Fiber Bragg grating based accelerometer , 2008 .

[5]  J. Chicharo,et al.  Principles and realizations of FBG wavelength tuning with elastic beams , 2005 .

[6]  A. Kersey,et al.  Experimental demonstration of a fiber Bragg grating accelerometer , 1996, IEEE Photonics Technology Letters.

[7]  Limin Sun,et al.  A novel FBG-based accelerometer with high sensitivity and temperature self-compensation , 2009, Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring.

[8]  Tiegen Liu,et al.  A fiber bragg grating acceleration sensor interrogated by a DFB laser diode , 2009 .

[9]  Ping Shum,et al.  Temperature-independent vibration sensor with a fiber Bragg grating , 2010 .

[10]  I. Bennion,et al.  Two-Axis Temperature-Insensitive Accelerometer Based on Multicore Fiber Bragg Gratings , 2008, IEEE Sensors Journal.

[11]  Jian Zhang,et al.  Study of FBG application in acceleration sensing , 2009, 2009 IEEE 9th International Conference on the Properties and Applications of Dielectric Materials.

[12]  Yinian Zhu,et al.  Fiber Bragg grating accelerometer with temperature insensitivity , 2003 .

[13]  Jae-Hung Han,et al.  Estimation of dynamic structural displacements using fiber Bragg grating strain sensors , 2007 .

[14]  Michael Cada,et al.  The possible use of Fiber Bragg Grating based accelerometers for seismic measurements , 2009, 2009 Canadian Conference on Electrical and Computer Engineering.

[15]  Bo Zhang,et al.  A new fiber Bragg grating accelerometer , 2006, International Symposium on Instrumentation and Control Technology.

[16]  B. Culshaw,et al.  Advanced layout of a fiber Bragg grating strain gauge rosette , 2006, Journal of Lightwave Technology.

[17]  Yan Zhang,et al.  Fiber Bragg grating sensors for seismic wave detection , 2005, International Conference on Optical Fibre Sensors.