Fiber optic flowmeter based on distributed feedback fiber laser

Wentao Zhang; Feng Li; Hongbin Xu; Wenzhu Huang; Fang Li

doi:10.1117/12.2185363

1 July 2015 Fiber optic flowmeter based on distributed feedback fiber laser

Wentao Zhang, Feng Li, Hongbin Xu, Wenzhu Huang, Fang Li

Proceedings Volume 9655, Fifth Asia-Pacific Optical Sensors Conference; 96550W (2015) https://doi.org/10.1117/12.2185363
Event: Fifth Asia Pacific Optical Sensors Conference, 2015, Jeju, Korea, Republic of

Abstract

This paper presents a novel fiber flowmeter based on distributed feedback fiber laser (DFB-FL). The DFB-FL is encapsulated in a PU tube which is put in the center of the flow pipe. When the flow speed changes, the flow induced pressure turbulence on the surface of the PU tube will change correspondingly. This pressure fluctuation is demodulated using phase-generated-carrier (PGC) method. The test result shows that the sensitivity of the fiber laser flowmeter is about 8×10^-3 pm/(m³/h). A resolution of 1.25×10^-4 m³/h is achieved.

Citation Download Citation

Wentao Zhang, Feng Li, Hongbin Xu, Wenzhu Huang, and Fang Li "Fiber optic flowmeter based on distributed feedback fiber laser", Proc. SPIE 9655, Fifth Asia-Pacific Optical Sensors Conference, 96550W (1 July 2015); https://doi.org/10.1117/12.2185363

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