Fiber optic Bragg grating laser sensors

Fiber lasers formed with rare earth doped fiber and fiber grating reflectors are being developed as tunable single frequency devices for a number of communications applications. These devices can also be used as sensors, and can be multiplexed using the inherent wavelength encoded nature of their output. Fiber Bragg grating based laser sensors can be implemented in configurations suitable for monitoring weak dynamic or quasi-static strains, and are thus useful for a range of sensing applications. This paper will review some work in this area.