A Bragg grating-tuned fiber laser strain sensor system

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 lase...

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Bibliographic Details
Published in:IEEE photonics technology letters 1993-02, Vol.5 (2), p.263-266
Main Authors: Melle, S.M., Alavie, A.T., Karr, S., Coroy, T., Liu, K., Measures, R.M.
Format: Article
Language:English
Subjects:
Bragg gratings
Capacitive sensors
Diffraction gratings
Doping (additives)
Erbium
Erbium-doped fiber lasers
Exact sciences and technology
Fiber gratings
Fiber lasers
Fundamental areas of phenomenology (including applications)
Lasers
Measurement and testing methods
Mirrors
Optical fiber sensors
Optical fibers
Physics
Sensor systems
Solid mechanics
Strain
Structural and continuum mechanics
Tunable circuits and devices
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Summary: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.< >
ISSN:1041-1135
1941-0174
DOI:10.1109/68.196025