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High-feedback DFB/FBG-induced noise analysis and static/dynamic strain sensing applications

This paper proposes to extend the self-mixing operation to chaotic conditions, using a dually distributed cavity: a distributed feedback (DFB) laser is connected to a 95% reflective fiber Bragg grating (FBG), which acts as a distributed reflector. The FBG is perturbed with static and dynamic strain, changing its reflectivity at the DFB wavelength.