Influence of system configuration on a ratiometric wavelength measurement system

Qiang Wu, Pengfei Wang, Yuliya Semenova, Gerald Farrell

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

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.

Original languageEnglish
Title of host publication20th International Conference on Optical Fibre Sensors
DOIs
Publication statusPublished - 2009
Event20th International Conference on Optical Fibre Sensors - Edinburgh, United Kingdom
Duration: 5 Oct 20099 Oct 2009

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume7503
ISSN (Print)0277-786X

Conference

Conference20th International Conference on Optical Fibre Sensors
Country/TerritoryUnited Kingdom
CityEdinburgh
Period5/10/099/10/09

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