Title :
Measurement of liquid droplet parameters using optical fiber
Author :
Das, Alok K. ; Mandal, Anup K. ; Banerjee, Sadhan
Author_Institution :
Dept. of Electron. & Telecommun. Eng., Jadavpur Univ., Calcutta, India
fDate :
4/1/1990 12:00:00 AM
Abstract :
The measurement of liquid droplet parameters such as size, number, concentration, viscosity, and refractive index is reported. The droplets are sprayed either from a pressure nozzle or a gas atomizing nozzle. The parameters are measured by detecting the clad mode power in the leaky ray zone of a three-region fiber by a new clad-probing technique, using normal core-clad fiber. The refractive index of the liquid is close to that of cladding. Taking the loss characteristics into account, the variation of output power with the deposition of droplets on the fiber is analyzed and compared with experimental results. The measurement sensitivity for different probing conditions is shown experimentally and verified by theoretical analysis. The change in bound power with the number of liquid droplets depositing on unclad fiber is also shown
Keywords :
drops; fibre optic sensors; nozzles; refractive index measurement; sensitivity; viscosity measurement; bound power; clad mode power; clad-probing technique; concentration; fibre droplet deposition; fibre optic sensors; gas atomizing nozzle; leaky ray zone; liquid droplet deposition number; liquid droplet measurement; liquid droplet parameters; loss characteristics; measurement sensitivity; normal core-clad fiber; nozzle sprayed droplets; number; optical fiber; output power; pressure nozzle; probing conditions; refractive index; size; three-region fiber; unclad fiber; viscosity; Atomic measurements; Oils; Optical fibers; Optical refraction; Power measurement; Refractive index; Size measurement; Spraying; Temperature measurement; Temperature sensors;
Journal_Title :
Lightwave Technology, Journal of
