Title :
An experimental study on the relationships between the speckle noise and the deformation of optical fiber
Author :
Taniguchi, Masanari ; Hasegawa, Makoto ; Takagi, Tasiiku
Author_Institution :
Tohoku Bunka Gakuen Univ., Sendai, Japan
Abstract :
In order to apply a speckle noise in optical fiber to sensor, the relationship between speckle noise pattern and deformation of the optical fiber was investigated. In the experiment. the He-Ne gas laser as light source, and the multi-mode and graded index optical fiber (quartz) were used. The image through the optical fiber was observed with respect to the movement of optical axis and the distortion of optical fiber. In addition. in order to extract the speckle noise pattern from the optical image, the digital image measuring system was applied. And, for both quantitative extraction and characterization of the speckle noise pattern variation, the digital logic operating technique was applied.
Keywords :
fibre optic sensors; gas lasers; optical fibres; speckle; He-Ne gas laser; digital image measuring system; graded index optical fiber; light source; optical fiber deformation; speckle noise; speckle noise pattern; Adaptive optics; Fiber lasers; Gas lasers; Laser noise; Optical distortion; Optical fiber sensors; Optical fibers; Optical noise; Optical sensors; Speckle;
Conference_Titel :
SICE 2002. Proceedings of the 41st SICE Annual Conference
Print_ISBN :
0-7803-7631-5
DOI :
10.1109/SICE.2002.1195576