IEEE Photonics Technology Letters · 1993 · 151 citations · 7 references
EngineeringElectrical EngineeringOptoelectronicsPhotonicsSensorsFiber OpticsOptical FibersOptical SensingOptical SensorsStrain MeasurementStrain SensorsBragg Grating SensorsFiber Bragg Grating SensorsFiber-optic SensingFiber-optic SensorsLaser OscillationOptical Fiber SensorsOptical Fiber Strain SensingOptical Fiber Strain Sensors
The development of a fiber laser sensor system which permits efficient interrogation of Bragg grating sensors is reported. A tunable erbium doped fiber laser which utilizes a broadband mirror and an intracore Bragg grating reflector in side-pump configuration is described. The wavelength of the laser oscillation is determined by the Bragg grating, which is remotely located and used as a strain sensor. This arrangement is used in conjunction with a passive wavelength demodulation system (WDS) to form a self-contained fiber laser strain sensor system, allowing efficient interrogation of the Bragg sensor. This device provides interrupt-immune sensing of static and dynamic strains with a bandwidth of 13.0 kHz.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
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Continuously tunable single-mode erbium fiber laser
G.A. Ball, W. W. Morey · Optics Letters · 1992 · 197 citations