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

Libo Yuan; Jun Yang; Zhihai Liu

doi:10.1117/12.785216

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

Libo Yuan, Jun Yang, Zhihai Liu

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.

Citation Download Citation

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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