The fibre-optic Doppler anemometer
Abstract
A laser Doppler anemometer is described in which an optical fibre is used to transmit the light to and from the measurement zone. An account is given of the various types of measurement that have been made with the instrument, particularly those involving Brownian motion. An analysis is made of backscattering into a fibre which shows that the back-scattered power is confined to a region extending only a few tens of core diameters from the fibre end.
- Publication:
-
IEE Journal of Microwaves Optics and Acoustics
- Pub Date:
- January 1978
- Bibcode:
- 1978JMOA....2...13D
- Keywords:
-
- Backscattering;
- Fiber Optics;
- Laser Doppler Velocimeters;
- Light Scattering;
- Velocity Measurement;
- Brownian Movements;
- Light Transmission;
- Optical Fibers;
- Optical Reflection;
- Signal Analysis;
- Spectrum Analysis;
- Instrumentation and Photography