16 May 2008 Fast four step digital demodulation for multiplexed fibre laser sensors
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Proceedings Volume 7004, 19th International Conference on Optical Fibre Sensors; 700422 (2008) https://doi.org/10.1117/12.785909
Event: 19th International Conference on Optical Fibre Sensors, 2008, Perth, WA, Australia
Abstract
We demonstrate an electro-optic phase modulator based demodulation system for acoustic frequency modulated optical signals. The system is free from polarisation fading and is capable of retrieving high frequency signals, ultimately limited by the time of flight of the interferometer itself. Digital interrogation method is based on the Carré algorithm and does not require fine tuning of the introduced phase and is suitable for simultaneous phase retrieval at multiple wavelengths without the need for correction transfer filters.
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M. Milnes, M. Milnes, A. Tikhomirov, A. Tikhomirov, S. Foster, S. Foster, S. Goodman, S. Goodman, } "Fast four step digital demodulation for multiplexed fibre laser sensors", Proc. SPIE 7004, 19th International Conference on Optical Fibre Sensors, 700422 (16 May 2008); doi: 10.1117/12.785909; https://doi.org/10.1117/12.785909
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