Sensitivity and stability characterization of linear cavity erbium-doped fiber laser for pressure measurement

• Main Authors: Mohd Idris S., Al-Taha M.R.H., Ismail A., Abdullah F., Jamaludin M.Z., Al-Mansoori M.H.
• Other Authors: 55346537400
• Format: Article
• Published: 2023
• Subjects: erbium-doped fiber laser; fiber Bragg grating; fiber sensor; pressure sensor; Fiber lasers; Fibers; Pressure sensors; Average power; Erbium doped fiber laser; Fiber laser sensors; Fiber Sensor; Good stability; Laser structures; Lasing wavelength; Linear cavity; Optical coupler; Pressure monitoring; Fiber Bragg gratings

This article reports a linear cavity Erbium-doped fiber (EDF) laser for pressure measurement.The fiber laser structure comprises an EDF amplifier, a circulator, an optical coupler, and a fiber Bragg grating (FBG) which is fitted to the shock tube where the pressure is applied. The FBG acts simultaneously as a lasing wavelength selecting component as well as a pressure sensor. The novelty of this sensor lies in its enhanced characteristic with 0.122 nm/bar sensitivity and very good stability with an average power fluctuation of 0.0025 dB over a period of 60 min. Preliminary results have proven to show that the fiber laser sensor is expected to be an attractive choice for long-distance pressure monitoring. � 2012 Wiley Periodicals, Inc.