Pressure sensing utilizing linear cavity erbium-doped fiber laser

• Main Authors: Idris S.M., Abdullah F., Al-Mansoori M.H., Jamaludin M.Z., Din N.M.
• Other Authors: 36092813800
• Format: Article
• Published: 2023
• Subjects: 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

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.