Double-L Cantilever-Based Fiber Bragg Grating Accelerometer

Parida, Om Prakash and Thomas, Jineesh and Nayak, Jagannath and Asokan, Sundarrajan (2019) Double-L Cantilever-Based Fiber Bragg Grating Accelerometer. In: IEEE SENSORS JOURNAL, 19 (23). pp. 11247-11254.

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Abstract

Optical accelerometers, especially the fiber Bragg grating accelerometers are the preferred sensors for vibration, and acceleration measurement in several fields of engineering. They are light, compact, immune to electromagnetic interference, and provide better noise immunity due to wavelength encoded nature of signal transduction. In the present work, analytical modeling, numerical simulation, fabrication, and characterization of a novel double-L cantilever based fiber Bragg grating accelerometer is presented. This design not only enhances the sensitivity in comparison to its single-L counterpart, but also provides self-temperature compensation. Modular design of the accelerometer provides flexibility in replacing specific components to achieve desired performance characteristics. Resonant frequency of 86 Hz, sensitivity of 406.7 pm/g with an excellent linearity of 99.86 %, and small temperature sensitivity of 0.016 pm/degrees C have been demonstrated for the fabricated model. The FBG accelerometer has a linear operating range of +/- 6 g.

Item Type:	Journal Article
Publication:	IEEE SENSORS JOURNAL
Publisher:	IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Additional Information:	Copyright of this article belongs to IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Keywords:	Fiber Bragg grating; mechanical sensor head; modular design; double-L cantilever; self-temperature compensation
Department/Centre:	Others Division of Physical & Mathematical Sciences > Instrumentation Appiled Physics
Date Deposited:	13 Jan 2020 11:57
Last Modified:	13 Jan 2020 11:57
URI:	http://eprints.iisc.ac.in/id/eprint/64344

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