Influence of system configuration on a ratiometric wavelength measurement system

Qiang Wu; Pengfei Wang; Yuliya Semenova; Gerald Farrell

doi:10.1117/12.835378

5 October 2009 Influence of system configuration on a ratiometric wavelength measurement system

Qiang Wu, Pengfei Wang, Yuliya Semenova, Gerald Farrell

Proceedings Volume 7503, 20th International Conference on Optical Fibre Sensors; 750376 (2009) https://doi.org/10.1117/12.835378
Event: 20th International Conference on Optical Fibre Sensors, 2009, Edinburgh, United Kingdom

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.

Citation Download Citation

Qiang Wu, Pengfei Wang, Yuliya Semenova, and Gerald Farrell "Influence of system configuration on a ratiometric wavelength measurement system", Proc. SPIE 7503, 20th International Conference on Optical Fibre Sensors, 750376 (5 October 2009); https://doi.org/10.1117/12.835378

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