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Proceedings Paper

Influence of system configuration on a ratiometric wavelength measurement system
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Paper Abstract

The influence of the spectral response of the optical source, the signal-to-noise ratio (SNR) of the FBG and the slope of the edge filter used within a ratiometric wavelength measurement system was investigated based on three system configuration cases: (1) the reflected FBG signal passes through both the reference arm and the edge filter arm, (2) the reflected FBG signal is connected directly to the edge filter arm and does not pass through the reference arm, (3) the edge filter sits in-line with the FBG and thus the source power is filtered prior to reaching the FBG. Both numerical simulations and experimental results show that cases 1 and 2 have a similar system performance whilst case 3 is the configuration which is shown to offer the highest wavelength resolution.

Paper Details

Date Published: 5 October 2009
PDF: 4 pages
Proc. SPIE 7503, 20th International Conference on Optical Fibre Sensors, 750376 (5 October 2009); doi: 10.1117/12.835378
Show Author Affiliations
Qiang Wu, Dublin Institute of Technology (Ireland)
Pengfei Wang, Dublin Institute of Technology (Ireland)
Yuliya Semenova, Dublin Institute of Technology (Ireland)
Gerald Farrell, Dublin Institute of Technology (Ireland)

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

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