Citation

Liu, Liu, Yajun and Rui, Ma and Ghaffar, Abdul and Haider, Muhammad Saleh Urf Kumail and Ali, Kamran and Khan, Muhammad Asghar and Islam, Md. Rajibul and Sayeed, Md Shohel (2026) Simultaneous measurement of linear and angular displacement sensor using POF based on macro-bend loss. Scientific Reports, 16 (1). ISSN 2045-2322

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Abstract

This paper presents a plastic optical fiber-based sensor for simultaneous linear and angular displacement measurement through intensity modulation of macro-bend loss. The sensing mechanism relies on generating bend-induced losses in twisted fiber probes and coupling the attenuated light into receiving fibers. Two independent probes are integrated along a single illuminating fiber: the first measures linear displacement, while the second detects angular displacement. Each probe is actuated by a dedicated stepper motor, which varies the bend radius through controlled dragging, converting mechanical displacement into measurable optical power variations. The system is characterized for both individual and synchronized operation, demonstrating a wide dynamic range (0–150 mm linear, 0°–360° angular) with high repeatability and consistent performance across rotational speeds of 5–20°/ s. The sensor exhibited limit of detection values of approximately 0.98° for angular measurement and 0.27 mm for linear displacement measurement, with corresponding hysteresis errors of 0.47% and 0.42% of full-scale deflection, respectively. Environmental robustness is ensured by a protective black tube that eliminates humidity effects and external light interference. The sensor’s compact design, dual-parameter measurement capability, and reliable performance make it ideal for many applications.

Item Type:	Article
Uncontrolled Keywords:	Plastic optical fiber sensor
Subjects:	Q Science > QA Mathematics > QA71-90 Instruments and machines
Divisions:	Faculty of Information Science and Technology (FIST)
Depositing User:	Ms Rosnani Abd Wahab
Date Deposited:	31 Jul 2026 07:13
Last Modified:	31 Jul 2026 07:13
URII:	http://shdl.mmu.edu.my/id/eprint/16429

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