What is it about?
given the importance of sodium chloride (NACL)in several areas and its more importance in human health, a small, reasonably priced and more sensitive fiber interferometer concentration fiber sensor based on in offset fiber was fabricate to measure different concentration of NACL. This sensor was made by splicing a same length of coreless fiber (CF) between two single mode fibers (SMFs) in one side of different displacements. Where it has been proven that the sensitivity of the sensor is affected by the value of the offset, it was found that the greater the lateral displacement, the lower the sensor's sensitivity .The best displacement that has the highest sensitivity compared to other displacements has been known (106.437nm/RIU).The results showed and proved that the offset technique is effective for improving the sensitivity of the sensor by comparing it with another sensor without offset of the same length, where its sensitivity was 74.56nm/RIU.
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Why is it important?
This sensor was made by splicing a same length of coreless fiber (CF) between two single mode fibers (SMFs) in one side of different displacements. Where it has been proven that the sensitivity of the sensor is affected by the value of the offset, it was found that the greater the lateral displacement, the lower the sensor’s sensitivity. The results showed and proved that the offset technique is effective for improving the sensitivity of the sensor by comparing it with another sensor without offset of the same length.
Perspectives
In this research, the influence of all possible displacements on one side on the conc. sensor sensitivity was studied and improved. An SCS configuration was formed by splicing the same length of CF between two SMFs with different displacements on one side A range of offsets (0 to 51.131µm) were investigated to determine the best offset, which was 12.268 µm with a sensitivity of 106.437nm/RIU, which was achieved maximum shift in wavelength, which led to the achievement of this high sensitivity, the results were verified by examining the output power of each sensor, and it was the highest output power achieved 19.4µw for the offset sensor 12.298µm. It has also been demonstrated in this research that by increasing the lateral displacement, the sensitivity of the sensor decreases due to increased loss and attenuation in the joint area of offset, but even so, it remains better than the sensor without offset. Our structure is low-cost and promising in sensing applications due to its straightforward fabrication process.
Assistant Lecturer Aya Ryaad mejbel
University of Baghdad
Read the Original
This page is a summary of: Studying the effect of different displacements on the concentration sensor based on coreless fiber, January 2024, American Institute of Physics,
DOI: 10.1063/5.0183054.
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