Picture of smart phone in human hand

World leading smartphone and mobile technology research at Strathclyde...

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 University of Strathclyde researchers, including by Strathclyde researchers from the Department of Computer & Information Sciences involved in researching exciting new applications for mobile and smartphone technology. But the transformative application of mobile technologies is also the focus of research within disciplines as diverse as Electronic & Electrical Engineering, Marketing, Human Resource Management and Biomedical Enginering, among others.

Explore Strathclyde's Open Access research on smartphone technology now...

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.