This tutorial presents a guided tour of laser feedback interferometry, from its origin and early
development through its implementation to a slew of sensing applications, including …

External optical feedback (EOF) has great impacts on the properties of lasers. It influences
the stable operation of lasers. However, various applications based on lasers with EOF have …

Self-mixing interferometry (SMI) is a well-known non-destructive sensing technique that has
been widely applied in both laboratory and engineering applications. In a laser SMI sensing …

In this article, we propose an all-fiber self-mixing velocimeter based on a DBR fiber laser
with adjustable injection intensity for the first time, and theoretically and experimentally …

We show that a self-mixing interferometer can supply not only to the usual optical-phase
signal cos 2ks (t) of the external reflector displacement s (t), but also the attitude signal P (a) …

In the filtered optical feedback system, a part of the emission of the laser is spectrally filtered,
here by a Fabry–Perot (FP) filter, and then fed back into the quantum-dot (QD) laser cavity …

The Young's modulus and internal friction are two important parameters of materials. Self-
mixing interferometry (SMI) is an emerging non-destructive sensing method that has been …

Fiber Bragg grating (FBG) is considered a good candidate for acoustic emission (AE)
measurement. The sensing and measurement in traditional FBG-based AE systems are …

Quasi-static interferometric signals in lasers under feedback arise from slowly varying
perturbations of the intracavity electric field resulting from the reinjection of a portion of the …

The Self-Mixing Interformeter (SMI) is a self-aligned optical interferometer which has been
used for acoustic wave sensing in air through the acousto-optic effect. This paper presents …