Performance comparison between plastic-based fiber bundle and multimode fused coupler as probes in displacement sensors |
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| Authors: | M. Yasin S. W. Harun Pujiyanto Z. A. Ghani H. Ahmad |
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| Affiliation: | 1.Department of Physics, Faculty of Science and Technology,Airlangga University,Surabaya,Indonesia;2.Department of Electrical Engineering, Faculty of Engineering,University of Malaya,Kuala Lumpur,Malaysia;3.Photonics Research Centre, Department of Physics, Faculty of Science,University of Malaya,Kuala Lumpur,Malaysia;4.Faculty of Applied Sciences,MARA University of Technology,Shah Alam,Malaysia |
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| Abstract: | Fiber optic displacement sensors with bundled and fused coupler fiber probes are being investigated. The effects of axial displacements on the detected output voltages are also investigated for fiber bundle probe sensor. The resolutions obtained are 0.9 and 4.0 μm, for the front and back slopes, respectively. A comparison is made with a commercial plastic based multimode fused coupler which gives a better range of 2.0 mm. This is longer than that achieved by the fiber bundle probe which is only 0.4 mm and has a lower resolution of 34 μm for the case of 50:50 coupling ratio. |
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