International Journal of Science and Research (IJSR)

International Journal of Science and Research (IJSR)
Open Access | Fully Refereed | Peer Reviewed

ISSN: 2319-7064


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Research Paper | Physics | Nigeria | Volume 9 Issue 5, May 2020


Speed Sensor Study Using A Single Fiber Bragg Grating (FBG)

Esaduwha Stanley Obukohwo


Abstract: Optical Fiber Sensors (OFS) based on Fiber Bragg Grating (FBG) technology possess several advantages such as sensitivity, reliability, low intrusively, galvanic insulation, as well as the ability to provide quasi-distributed remote measurements. FBGs are extensively employed in optical sensing and can compete favourably with traditional electrical strain gauges. In this research, speed sensor using a single Fiber Bragg Grating has been studied. The study was conducted using an Optical Spectrum Analyzer (OSA) and a 1300nm Super Luminescent Diode (SLD). The experiment resulted in the bending of the FBG. In this experiment, the FBG was located inside a wind tunnel. An increasing bending of the FBG was noticed as the speed and pressure in the tunnel increased from 7.22 to 27.25 m/s and 31.90 to 450.80 Pa respectively. The Bragg wavelength shift also increased with speed and pressure. The measured sensitivities were 0.0058nm/ms-1 for speed and 0.0463 ms-1/Pa for wind pressure. The sensitivity measurements are very important especially when FBG is to be applied as a sensing system. As such, the FBG in question can be used as a strain sensor, wind pressure sensor and wind speed sensor.


Keywords: Fiber Bragg Grating FBG, Wind Tunnel, Optical Spectrum Analyzer OSA, Super Luminescent Diode SLD, Sensing


Edition: Volume 9 Issue 5, May 2020,


Pages: 1668 - 1671


How to Cite this Article?

Esaduwha Stanley Obukohwo, "Speed Sensor Study Using A Single Fiber Bragg Grating (FBG)", International Journal of Science and Research (IJSR), https://www.ijsr.net/get_abstract.php?paper_id=SR20516120633, Volume 9 Issue 5, May 2020, 1668 - 1671

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