Frequency domain simultaneous tone interrogation for faster, sweep-free Brillouin distributed sensing

Asher Voskoboinik; Jian Wang; Alan E. Willner; Moshe Tur

doi:10.1117/12.885171

17 May 2011 Frequency domain simultaneous tone interrogation for faster, sweep-free Brillouin distributed sensing

Asher Voskoboinik, Jian Wang, Alan E. Willner, Moshe Tur

Proceedings Volume 7753, 21st International Conference on Optical Fiber Sensors; 77533G (2011) https://doi.org/10.1117/12.885171
Event: 21st International Conference on Optical Fibre Sensors (OFS21), 2011, Ottawa, Canada

Abstract

We propose a frequency-sweep-free method for a SBS sensor, where the Brillouin shift is determined without the need of sweeping the frequency of any of the optical waves. This is implemented by generating simultaneous frequency tones in both probe and pump channels and by properly arranging their frequency values. The closest tone to the Brillouin shift receives the most amplification, and thus the Brillouin gain frequency center can be obtained from a single measurement. We experimentally demonstrate the feasibility with CW probes and pumps. The extension to a fast sweep-free Brillouin optical time domain sensing is performed through detailed simulations.

Citation Download Citation

Asher Voskoboinik, Jian Wang, Alan E. Willner, and Moshe Tur "Frequency domain simultaneous tone interrogation for faster, sweep-free Brillouin distributed sensing", Proc. SPIE 7753, 21st International Conference on Optical Fiber Sensors, 77533G (17 May 2011); https://doi.org/10.1117/12.885171

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