Title :
A Fiber-Optic System for the Quasi-Distributed Detection of Liquids
Author :
Donlagic, Denis ; Preloznik, Borut
Author_Institution :
Fac. of Electr. Eng. & Comput. Sci., Univ. of Maribor, Maribor, Slovenia
Abstract :
This letter presents a multiplexed fiber-optic sensor array suitable for detection of liquid intrusions, spills, and leaks. The proposed detection systems is based on active heating and observation of temperature changes in short sections of optically absorbing (vanadium-doped) optical fibers that were interconnected into a sensing array by a standard single-mode optical fiber. The heating of the vanadium-doped fiber sections was achieved by application of a common 980-nm pump laser source. The associated signal processing and integration utilizes a simple, custom-designed optical time domain reflectometry that relies on only a few low-cost standard telecom components.
Keywords :
distributed sensors; fibre optic sensors; heating; integrated optics; light sources; optical arrays; optical design techniques; optical fibre testing; optical information processing; optical pumping; optical time-domain reflectometry; vanadium; custom-designed optical time domain reflectometry; integrated optics; leak detection; liquid detection; multiplexed fiber-optic sensor array; optical signal processing; optically absorbing optical fibers; pump laser source; single-mode optical fiber; spill detection; vanadium-doped optical fiber heating; wavelength 980 nm; Arrays; Heating; Optical fiber amplifiers; Optical fiber sensors; Fabry-Perot sensors; Optical fibers; liquid detection; multiplexed sensor array; optical fiber sensors; optical fibers; optical signal interrogation; vanadium doped fiber; water detection;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2015.2444426
