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Proceedings Paper

Toward the implementation of flexible sensing sheet with fibre Bragg grating sensing elements
Author(s): Chunxiao Yan; Eleonora Ferraris; Dominiek Reynaerts
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Paper Abstract

Optical sensing sheets, based on Fibre Bragg Grating (FBG) sensing elements embedded in exible polydimethyl- siloxane (PDMS), are produced and tested. The device shows promise in pressure mapping and tactile applications, in fields such as robotics and rehabilitation. FBGs inscribed in highly-birefringent photonic crystal fibres, reflecting two Bragg peaks, are used, and the potential to discriminate pressure and temperature is explored. The prototypes were produced by moulding technology and PDMS was cured at room temperature. One sample with FBGs embedded in the middle layer of a 2 mm thick PDMS sheet exhibited a linear pressure sensitivity of about 2:6 pm/kPa over the range of 0 - 250 kPa. Another sample was proposed and tested for temperature insensitive measurements, by realising local stress concentration at FBG sections of the embedded fibre.

Paper Details

Date Published: 9 May 2012
PDF: 9 pages
Proc. SPIE 8439, Optical Sensing and Detection II, 843906 (9 May 2012); doi: 10.1117/12.922831
Show Author Affiliations
Chunxiao Yan, Katholieke Univ. Leuven (Belgium)
Eleonora Ferraris, Katholieke Univ. Leuven (Belgium)
Dominiek Reynaerts, Katholieke Univ. Leuven (Belgium)

Published in SPIE Proceedings Vol. 8439:
Optical Sensing and Detection II
Francis Berghmans; Anna Grazia Mignani; Piet De Moor, Editor(s)

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