Analysis and Implementation of a Direct Phase Unwrapping Method for Displacement Measurement Using Self-Mixing Interferometry
نویسندگان
چکیده
منابع مشابه
Improving the measurement performance for a self-mixing interferometry-based displacement sensing system.
Approaches that are, to our knowledge, novel, are proposed in this paper to improve the accuracy performance of self-mixing interferometry (SMI) for displacement measurement. First, the characteristics associated with signals observed in SMI systems are studied, based on which a new procedure is proposed for achieving accurate estimation of the laser phase. The studies also revealed the reasons...
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A self-mixing interferometry (SMI) system is a laser diode (LD) with an external cavity formed by a moving external target. The behavior of an SMI system is governed by the injection current J to the LD and the parameters associated with the external cavity mainly including optical feedback factor C, the initial external cavity length (L₀) and the light phase (ϕ₀) which is mapped to the movemen...
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ژورنال
عنوان ژورنال: IEEE Sensors Journal
سال: 2017
ISSN: 1530-437X,1558-1748,2379-9153
DOI: 10.1109/jsen.2017.2758440