Title :
Auto Adaptive Signal Processing of a Laser Diode Self-Mixing Displacement Sensor
Author :
Plantier, Guy ; Bes, Caroline ; Bosch, Thierry ; Bony, Francis
Author_Institution :
Ecole Superieure d´´Electronique de l´´Ouest, Angers
Abstract :
A semiconductor laser subject to optical moderate feedback can be used to design an interferometric displacement sensor. The auto adaptive signal processing presented in this paper has been computed in order to ameliorate the accuracy of such a sensor. This set-up has been successfully tested for both harmonic and aleatory displacements of a remote piezoelectric actuator. Measurements of displacements up to 10 mum has been achieved with an accuracy of plusmn80 nm
Keywords :
adaptive signal processing; displacement measurement; optical sensors; semiconductor lasers; -10 to 10 nm; 10 micron; adaptive signal processing; laser diode self-mixing displacement sensor; optical sensor; semiconductor laser; Adaptive signal processing; Diode lasers; Laser feedback; Laser modes; Optical design; Optical feedback; Optical interferometry; Optical sensors; Optical signal processing; Semiconductor lasers; displacement measurement; optical sensor; semiconductor laser; signal processing;
Conference_Titel :
Instrumentation and Measurement Technology Conference, 2005. IMTC 2005. Proceedings of the IEEE
Conference_Location :
Ottawa, Ont.
Print_ISBN :
0-7803-8879-8
DOI :
10.1109/IMTC.2005.1604293
