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D. SENGUPTA1, M. SAI SHANKAR1,* , P. SAIDI REDDY1, R. L. N SAI PRASAD1, K. SRIMANNARAYANA1
Design and construction of a liquid level sensor using FBG, based on change in axial strain due buoyancy is presented. The lever in the system induces axial strain on the FBG due to change in level, resulting in modulation of the Bragg wavelength. The shift in the Bragg wavelength is a measure of change in liquid level. The Bragg grating (3 mm length) used in this work has been fabricated using a phase mask technique and written in a photosensitive optical fiber. A sensitivity of 0.106 nm/cm is observed for a level change of 13 cm. The results obtained indicate that the sensor has good sensitivity and repeatability. The sensor can be customized for a required level measurement for a particular application.
Axial strain, Buoyancy, Fiber Bragg grating, Liquid-level sensor.
D. SENGUPTA, M. SAI SHANKAR, P. SAIDI REDDY, R. L. N SAI PRASAD, K. SRIMANNARAYANA, Axial strain based Bragg grating level sensor, Optoelectronics and Advanced Materials - Rapid Communications, 4, 12, December 2010, pp.1933-1936 (2010).
Submitted at: Oct. 29, 2010
Accepted at: Nov. 29, 2010
Optoelectronics and Advanced Materials - Rapid Communications
(2023): 0.5 - 2023 Journal Citation Reports (Clarivate Analytics, 2024)
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