Microwave photonic distributed sensing in harsh environment

Baokai Cheng; Liwei Hua; Wenge Zhu; Yang Song; Lei Yuan; Yanjun Li; Hai Xiao

doi:10.1117/12.2224745

17 May 2016 Microwave photonic distributed sensing in harsh environment

Baokai Cheng, Liwei Hua, Wenge Zhu, Yang Song, Lei Yuan, Yanjun Li, Hai Xiao

Proceedings Volume 9836, Micro- and Nanotechnology Sensors, Systems, and Applications VIII; 98360H (2016) https://doi.org/10.1117/12.2224745
Event: SPIE Defense + Security, 2016, Baltimore, MD, United States

Abstract

We report a new distributed fiber optic sensing technique using optical carrier based microwave interferometry. The concept has been demonstrated using different types of optical fibers including singlemode fiber, multimode fiber, single crystal sapphire fiber and polymer fiber. Using the microwave-photonic technique, many fiber interferometers with the same or different optical path differences were interrogated and their locations could be unambiguously determined. The distributed sensing capability was demonstrated using cascaded low-finesse Fabry-Perot interferometers fabricated by fs laser micromachining. Spatially continuous, fully distributed temperature and strain measurements were used as examples to demonstrate the capability of the proposed concept.

Citation Download Citation

Baokai Cheng, Liwei Hua, Wenge Zhu, Yang Song, Lei Yuan, Yanjun Li, and Hai Xiao "Microwave photonic distributed sensing in harsh environment", Proc. SPIE 9836, Micro- and Nanotechnology Sensors, Systems, and Applications VIII, 98360H (17 May 2016); https://doi.org/10.1117/12.2224745

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