Dynamical strain sensing via discrete reflectors interrogated by optical frequency domain reflectometry

Oren Y. Sagiv; Dror Arbel; Yinon Katz; Yossi Grotas; Avishay Eyal

doi:10.1117/12.975184

7 November 2012 Dynamical strain sensing via discrete reflectors interrogated by optical frequency domain reflectometry

Oren Y. Sagiv, Dror Arbel, Yinon Katz, Yossi Grotas, Avishay Eyal

Proceedings Volume 8421, OFS2012 22nd International Conference on Optical Fiber Sensors; 84218L (2012) https://doi.org/10.1117/12.975184
Event: OFS2012 22nd International Conference on Optical Fiber Sensor, 2012, Beijing, China

Abstract

Dynamical sensing of strain via discrete reflectors interrogated by optical frequency domain reflectometry is described and demonstrated experimentally. The benefits of using discrete reflectors rather than Rayleigh back-scattering for dynamical measurements are elaborated. The method is tested in a sensor arm made from four discrete fiber segments of different lengths and in a fiber with an array of ten fiber Bragg gratings with the same center wavelength and ~0.5% reflection. Dynamical sensing of oscillatory strain at 100 Hz, with absolute stretching amplitude <100nm, at ~1km is demonstrated.

Citation Download Citation

Oren Y. Sagiv, Dror Arbel, Yinon Katz, Yossi Grotas, and Avishay Eyal "Dynamical strain sensing via discrete reflectors interrogated by optical frequency domain reflectometry", Proc. SPIE 8421, OFS2012 22nd International Conference on Optical Fiber Sensors, 84218L (7 November 2012); https://doi.org/10.1117/12.975184

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