Temperature-insensitive bend sensor using entirely centered erbium doping in the fiber core

Ahmad, Harith and Zulkifli, Mohd Zamani and Muhammad, Farah Diana and Md Semangun, Julian M and Abdul Rashid, Hairul Azhar and Harun, Sulaiman Wadi (2013) Temperature-insensitive bend sensor using entirely centered erbium doping in the fiber core. Sensors, 13 (7). pp. 9536-9546. ISSN 1424-3210 E-ISSN 1424-8220

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Abstract

A fiber based bend sensor using a uniquely designed Bend-Sensitive Erbium Doped Fiber (BSEDF) is proposed and demonstrated. The BSEDF has two core regions, namely an undoped outer region with a diameter of about 9.38 μm encompassing a doped, inner core region with a diameter of 4.00 μm. The doped core region has about 400 ppm of an Er2O3 dopant. Pumping the BSEDF with a conventional 980 nm laser diode gives an Amplified Spontaneous Emission (ASE) spectrum spanning from 1,510 nm to over 1,560 nm at the output power level of about −58 dBm. The ASE spectrum has a peak power of −52 dBm at a central wavelength of 1,533 nm when not spooled. Spooling the BSEDF with diameters of 10 cm to 2 cm yields decreasing peak powers from −57.0 dBm to −61.8 dBm, while the central wavelength remains unchanged. The output is highly stable over time, with a low temperature sensitivity of around ~0.005 dBm/°C, thus allowing for the development of a highly stable sensor system based in the change of the peak power alone.

Item Type:	Article (Journal)
Additional Information:	8870/84312
Uncontrolled Keywords:	bending sensor; special fiber; temperature-insensitivity; erbium-doped fiber
Subjects:	Q Science > QC Physics
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Science > Department of Physics
Depositing User:	Dr M Z Zulkifli
Date Deposited:	19 Nov 2020 11:27
Last Modified:	19 Nov 2020 11:27
URI:	http://irep.iium.edu.my/id/eprint/84312

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