Pressure sensing utilizing linear cavity erbium-doped fiber laser

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Idris S.M.
Abdullah F.
Al-Mansoori M.H.
Jamaludin M.Z.
Din N.M.
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In this paper, we report a fiber laser pressure sensor based on linear cavity erbium-doped fiber laser. The fiber laser structure comprises of an erbium-doped fiber amplifier, a circulator, an optical coupler and a fiber Bragg grating (FBG) which acts simultaneously as a lasing wavelength selecting components as well as a pressure sensor. The FBG is fitted to the shock tube where the pressure is applied. The fiber laser pressure sensor has a low threshold power of 7 mW, an output power of 2.28 mW and an optical signal to noise ratio over 55 dB. The proposed fiber laser sensor is expected to be an attractive choice for long-distance pressure monitoring. � 2010 Pleiades Publishing, Ltd.
Erbium , Fiber amplifiers , Fiber Bragg gratings , Pressure sensors , Pressure transducers , Signal to noise ratio , Erbium doped fiber laser , Fiber Bragg grating (fbg) , Fiber laser sensors , Lasing wavelength , Linear cavity , Low thresholds , Optical coupler , Optical signal to noise ratio , Output power , Pressure monitoring , Pressure sensing , Fibers