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Proceedings Paper

Response of a fibre optic long period grating operating at the phase matching turning point to the deposition of a nanostructured coating
Author(s): S. W. James; S. M. Topliss; S. C. Cheung; R. P. Tatam
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Paper Abstract

The response of the transmission spectrum of a fibre optic long period grating operating near the phase matching turning point to the deposition of a nanostructured coating is investigated. The dual-resonant bands characteristic of operation in this regime are observed to show a high sensitivity to the thickness of the coating, but with opposite signs. Appropriate design of the device, based on the grating period, the refractive index and thickness of the coating and the fibre composition, can allow the sensitivity of the device to the optical thickness of the coating to be optimised.

Paper Details

Date Published: 5 October 2009
PDF: 4 pages
Proc. SPIE 7503, 20th International Conference on Optical Fibre Sensors, 750362 (5 October 2009); doi: 10.1117/12.834725
Show Author Affiliations
S. W. James, Cranfield Univ. (United Kingdom)
S. M. Topliss, Cranfield Univ. (United Kingdom)
S. C. Cheung, Cranfield Univ. (United Kingdom)
R. P. Tatam, Cranfield Univ. (United Kingdom)


Published in SPIE Proceedings Vol. 7503:
20th International Conference on Optical Fibre Sensors
Julian D. C. Jones, Editor(s)

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