Dakin, J.P., Ecke, W., Rothardt, M., Schauer, J., Usbeck, K. and Willsch, R.
New multiplexing scheme for monitoring fiber optic Bragg grating sensors in the coherence domain
In Proceedings of Optical Fiber Sensors.
Optical Society of America..
A new multiplexing scheme for monitoring fiber optic Bragg gratings in the coherence domain has been developed. Grating pairs with different grating distances are distributed along a fiber line, and interference between their reflections is monitored with a scanning Michelson interferometer. The Bragg wavelength of the individual sensor elements is determined from the interference signal frequency
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