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Analysis of a Novel MOEM Race Track Resontor based Vibration Sensor

Malathi, S and Pattnaik, PK and Srinivas, T and Mittal, Manish and Rani, KE and Usha, R (2007) Analysis of a Novel MOEM Race Track Resontor based Vibration Sensor. In: Sensors 2007 RCI, Hyderabad, Hyderabad.

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In this paper we analyze a novel Micro Opto Electro Mechanical Systems (MOEMS) race track resonator based vibration sensor. In this vibration sensor the straight portion of a race track resonator is located at the foot of the cantilever beam with proof mass. As the beam deflects due to vibration, stress induced refractive change in the waveguide located over the beam lead to the wavelength shift providing the measure of vibration. A wavelength shift of 3.19 pm/g in the range of 280 g for a cantilever beam of 1750μm×450m×20μmhas been obtained. The maximum acceleration (breakdown) for these dimensions is 2900g when a safety factor of 2 is taken into account. Since the wavelength of operation is around 1.55μm hybrid integration of source and detector is possible on the same substrate. Also it is less amenable to noise as wavelength shift provides the sensor signal. This type of sensors can be used for aerospace application and other harsh environments with suitable design.

Item Type: Conference Paper
Keywords: MOEMS;vibration sensor;race track resonator
Department/Centre: Division of Electrical Sciences > Electrical Communication Engineering
Date Deposited: 13 Oct 2011 08:41
Last Modified: 13 Oct 2011 08:41
URI: http://eprints.iisc.ac.in/id/eprint/41383

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