A Bragg grating-tuned fiber laser strain sensor system

作者：Serge Melle, A. Tino Alavie, Shawn E. Karr, T. Coroy, K. Liu, R. M. Measures · 发表于：IEEE Photonics Technology Letters · 年份：1993 · DOI：10.1109/68.196025 · 被引用次数：152 · 研究领域：Advanced Fiber Optic Sensors、Photonic and Optical Devices、Advanced Fiber Laser Technologies

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.>