Picture of athlete cycling

Open Access research with a real impact on health...

The Strathprints institutional repository is a digital archive of University of Strathclyde's Open Access research outputs. Strathprints provides access to thousands of Open Access research papers by Strathclyde researchers, including by researchers from the Physical Activity for Health Group based within the School of Psychological Sciences & Health. Research here seeks to better understand how and why physical activity improves health, gain a better understanding of the amount, intensity, and type of physical activity needed for health benefits, and evaluate the effect of interventions to promote physical activity.

Explore open research content by Physical Activity for Health...

High-speed, solid state, interferometric interrogator and multiplexer for fiber Bragg grating sensors

Orr, Philip and Niewczas, Pawel (2011) High-speed, solid state, interferometric interrogator and multiplexer for fiber Bragg grating sensors. Journal of Lightwave Technology, 29 (22). 3387 - 3392. ISSN 0733-8724

[img] PDF (High-Speed, Solid State, Interferometric Interrogator and Multiplexer for Fibre Bragg Grating Sensors)
06025233_WDM_Switched_Interrogator.pdf - Preprint
License: Unspecified

Download (492kB)


We report on the design and prototyping of a robust high-speed interferometric multiplexer and interrogator for fiber Bragg grating sensors. The scheme is based on the combination of active WDM channel switching and passive, instantaneous interferometry, allowing the resolution of virgin interferometric interrogators to be retained at MHz multiplexing rates. In this article the system design and operation are described, and a prototype scheme is characterized for three sensors and a multiplexing rate of 4 kHz, demonstrating a noise floor of 10 nε/√Hz and no cross-sensitivity. It is proposed that the system will be applicable to demanding monitoring applications requiring high speed and high resolution measurements across the sensor array.