Multifiber laser Doppler velocimeter with backward scattering

Leszek Wolf; Abdulghafoor Ibrahim Abdullah; Antoni Drobnik; Franciszek Kostrubiec; Grzegorz Owczarek

doi:10.1117/12.203318

1 March 1995 Multifiber laser Doppler velocimeter with backward scattering

Leszek Wolf, Abdulghafoor Ibrahim Abdullah, Antoni Drobnik, Franciszek Kostrubiec, Grzegorz Owczarek

Proceedings Volume 2202, Laser Technology IV: Research Trends, Instrumentation, and Applications in Metrology and Materials Processing; (1995) https://doi.org/10.1117/12.203318
Event: Laser Technology: Fourth Symposium, 1993, Szczecin, Poland

Abstract

A laser Doppler velocimeter (LDV) using a multi-fiber optic pickup was designed. A single fiber directs the beam to the moving surface. The back scattered signals were received by ten optical fibers. A multi-fiber laser Doppler velocimeter is (MFLDV) capable of determining the value of velocity as high as 10 mm/sec and as low as 0.031 mm/sec. A good linearity is obtained between Doppler shifted frequency (Delta) f and the velocity of a moving surface with a correlation factor of 0.999. LDV using fiber optics has important advantages over conventional systems, it is simpler, easier to align, and non-invasive i.e., the surface does not need to be touched or physically contacted.

Citation Download Citation

Leszek Wolf, Abdulghafoor Ibrahim Abdullah, Antoni Drobnik, Franciszek Kostrubiec, and Grzegorz Owczarek "Multifiber laser Doppler velocimeter with backward scattering", Proc. SPIE 2202, Laser Technology IV: Research Trends, Instrumentation, and Applications in Metrology and Materials Processing, (1 March 1995); https://doi.org/10.1117/12.203318

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