Optical fiber sensors for flow measurement

Sallehuddin Ibrahim; Robert Garnett Green; Ken Dutton

doi:10.1117/12.397903

31 August 2000 Optical fiber sensors for flow measurement

Sallehuddin Ibrahim, Robert Garnett Green, Ken Dutton

Proceedings Volume 4074, Applications of Optical Fiber Sensors; (2000) https://doi.org/10.1117/12.397903
Event: Symposium on Applied Photonics, 2000, Glasgow, United Kingdom

Abstract

The overall aim of this project is to investigate the use of optical fiber sensors for on-line monitoring of particles and droplets having low concentration being conveyed by a fluid. In this project, the system employs lensed optical fiber sensors developed using a low cost approach. A general mathematical model for the lens constructed at each end of the fiber optic was derived which takes into consideration that a large divergent beam is undesirable because it reduces the energy centered in the beam and can cause overlapping of adjacent transmitted beams at the receivers. Initially, the optical fibers are polished. Then, the lenses are formed using a specially-made heating platform. The receiver fiber is coupled to a photodiode, enabling the received light level to be measured. Optical fiber sensors are suitable for monitoring flowing materials where the conveyed component ratio is less than 10% vol./vol. The use of optical fibers provides an opportunity to design sensors with a very wide bandwidth, thus enabling the measurement of high speed flowing particles or droplets. The light extinction method used in this project is suitable for measurement of particles or droplets equal and greater than 100 micrometers .

Citation Download Citation

Sallehuddin Ibrahim, Robert Garnett Green, and Ken Dutton "Optical fiber sensors for flow measurement", Proc. SPIE 4074, Applications of Optical Fiber Sensors, (31 August 2000); https://doi.org/10.1117/12.397903

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