Digital control of a white light system for interrogation of optical fiber interferometric sensors

E. Velosa; C. Gouveia; P. A. S. Jorge; J. M. Baptista

doi:10.1117/12.866458

8 September 2010 Digital control of a white light system for interrogation of optical fiber interferometric sensors

E. Velosa, C. Gouveia, P. A. S. Jorge, J. M. Baptista

Proceedings Volume 7653, Fourth European Workshop on Optical Fibre Sensors; 76532E (2010) https://doi.org/10.1117/12.866458
Event: (EWOFS'10) Fourth European Workshop on Optical Fibre Sensors, 2010, Porto, Portugal

Abstract

A digital control system to interrogate optical fiber interferometric sensors is presented. The system was implemented using a DAQ board and LabView Software, it is based on white light interferometry, and can use four different synthetic heterodyne and pseudo-heterodyne signal detection schemes. The system was tested and compared with standard hardware instrumentation using a fiber optic Mach-Zehnder interferometer to readout strain sensitive Fabry-Pérot sensors in a differential configuration. It is shown that the virtual instrumentation has a good performance being a viable alternative for use in compact portable sensing systems.

Citation Download Citation

E. Velosa, C. Gouveia, P. A. S. Jorge, and J. M. Baptista "Digital control of a white light system for interrogation of optical fiber interferometric sensors", Proc. SPIE 7653, Fourth European Workshop on Optical Fibre Sensors, 76532E (8 September 2010); https://doi.org/10.1117/12.866458

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