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 …

We propose a sensor based on the integration of self-mixing interference (SMI) with
microfiber, for human health monitoring. Through the power variation of the reflected light …

In order to reconstruct the micro-vibration quickly and easily, a novel phase unwrap**
algorithm based on multiple Hilbert transform is proposed. Hilbert transform is performed …

Laser self-mixing interferometry (SMI) is an attractive sensing scheme due to its compact,
self-align, and cost-effective nature. In this work, an SMI based compute-intensive phase …

We present a novel method by a multi-longitudinal mode laser with a waveplate to generate
two orthogonally polarized signals with stable and adjustable phase differences. The phase …

Optical feedback interferometry (OFI) sensors are experiencing a consistent increase in their
applications to biosensing due to their contactless nature, low cost and compactness …

Self-mixing or optical feedback interferometry has been widely used for displacement and
velocity measurement applications. For metric information retrieval with<; λ/2 precision …

Measurement performance of self-mixing interferometric (SMI) laser sensor can be
significantly affected due to the presence of noise. In this case, conventional signal …