Title :
Experimental study on the speckle noise in optical fiber and its application to the sensor
Author :
Taniguchi, Masanari ; Takagi, Tasuku
Author_Institution :
Fac. of Sci. & Technol., Meijo Univ., Nagoya, Japan
Abstract :
Speckle noise in an optical fiber is one of the most annoying problems in treating coherent light. Also, it is influenced by mismatch in the optical axis and deformation due to an imposed load on the fiber. In this study, in order to apply the optical fiber to a sensor, the speckle noise pattern was measured by using the digital signal processing technique (DSPT) along with the digital logic operation technique (DLOT). As a result, the characterization of the speckle noise pattern was made possible, even when the distortion of fiber was changed microscopically
Keywords :
fibre optic sensors; image processing; noise measurement; optical fibre losses; optical fibre testing; optical loss measurement; speckle; coherent light; digital image processing technique; digital logic operation technique; distortion of fiber; optical axis mismatch; optical fiber; optical loss measurement; sensor application; speckle noise measurement; thermal deformation; Adaptive optics; Distortion measurement; Optical distortion; Optical fiber sensors; Optical fibers; Optical noise; Optical sensors; Optical signal processing; Sensor phenomena and characterization; Speckle;
Conference_Titel :
Instrumentation and Measurement Technology Conference, 1998. IMTC/98. Conference Proceedings. IEEE
Conference_Location :
St. Paul, MN
Print_ISBN :
0-7803-4797-8
DOI :
10.1109/IMTC.1998.676905
