Fiber optic flow velocity sensor based on an in-fiber integrated Michelson interferometer

Libo Yuan; Jun Yang; Zhihai Liu

doi:10.1117/12.785216

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16 May 2008 Fiber optic flow velocity sensor based on an in-fiber integrated Michelson interferometer

Libo Yuan, Jun Yang, Zhihai Liu

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Proceedings Volume 7004, 19th International Conference on Optical Fibre Sensors; 70043E (2008) https://doi.org/10.1117/12.785216
Event: 19th International Conference on Optical Fibre Sensors, 2008, Perth, WA, Australia

Abstract

A novel fiber optic flow velocity sensor based on a twin-core fiber Michelson interferometer has been proposed and demonstrated. The sensor only is a segment of twin-core fiber acting as cylinder cantilever beam. The force exerted on the cylinder by the flow of a fluid with unknown velocity bends the fiber, which corresponding to the shift of the phase of the twin-core in-fiber integrated Michelson interferometer. This twin-core fiber sensing technique could automatically compensate the variation of environmental temperature and pressure due to both arms of the interferometer would be affected equally by such changes.

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Libo Yuan, Jun Yang, and Zhihai Liu "Fiber optic flow velocity sensor based on an in-fiber integrated Michelson interferometer", Proc. SPIE 7004, 19th International Conference on Optical Fibre Sensors, 70043E (16 May 2008); https://doi.org/10.1117/12.785216

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