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A Novel Opto Electro Mechanical Interrogation System for Measuring Wavelength Shifts in Fiber Bragg Grating (FBG) Sensors

Suresha, Krishnappa and Yamdagni, Sumeet and Mohan, Suresh Chandra and Asokan, Sundarrajan (2008) A Novel Opto Electro Mechanical Interrogation System for Measuring Wavelength Shifts in Fiber Bragg Grating (FBG) Sensors. In: International Journal of Optomechatronics, 2 (1). pp. 61-73.

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Official URL: http://www.informaworld.com/smpp/content~content=a...

Abstract

Here, we describe a novel FBG interrogation system in which FBGs are used as both sensing and reference elements. The reference FBGs is bonded to a mechanical flexure system having a linear amplification of 1:3.5, which is actuated using a piezo-actuator by applying a 0-150V ramp. The lengths of the reference gratings decide the maximum strain that can be applied to the reference grating, which in turn decides that strain range which can be interrogated. The main advantages of the present system are the on-line measurement of the wavelength shifts, small size, good sensitivity, multiplexing capability and low cost.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to Informa Plc., 2009
Keywords: Fiber Bragg gratings; Mechanical piezo-driven flexure; Optical fiber sensors; Switch mode power supply
Department/Centre: Division of Physical & Mathematical Sciences > Instrumentation and Applied Physics (Formally ISU)
Date Deposited: 17 Dec 2009 11:37
Last Modified: 17 Dec 2009 11:37
URI: http://eprints.iisc.ernet.in/id/eprint/24223

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