Title :
High resolution and wide dynamic range fiber optic pulse correlation sensing system
Author :
Xu, Xunjian ; Nonaka, Koji
Author_Institution :
Frontier Eng. Dept., Kochi Univ. of Technol., Kami, Japan
Abstract :
A simple fiber optic pulse correlation sesning system was proposed for high resolution and wide dynamic measurable range temperature measurement. This sensing system uses the second harmonic generation (SHG) to detect the correlation value of the monitoring and reference pulses. The correlation value is proportional to the temperature or strain change in the monitoring fiber. By combining long and short monitoring fibers using optical switch, it is able to reach high resolution and wide range measurement. And by employing an optical time delay component, it is possible to achieve a dynamic ranges measurement.
Keywords :
delays; fibre optic sensors; optical correlation; optical harmonic generation; optical switches; temperature measurement; correlation value; fiber optic pulse correlation sesning system; high resolution temperature measurement; optical switch; optical time delay; reference pulses; second harmonic generation; wide dynamic measurable range temperature measurement; Capacitive sensors; Dynamic range; Monitoring; Optical fibers; Optical harmonic generation; Optical pulse generation; Optical pulses; Pulse measurements; Temperature measurement; Temperature sensors; fiber optic sensor; high resolution; optical pulse correlation; optical switch;
Conference_Titel :
Communications, 2009. APCC 2009. 15th Asia-Pacific Conference on
Conference_Location :
Shanghai
Print_ISBN :
978-1-4244-4784-8
Electronic_ISBN :
978-1-4244-4785-5
DOI :
10.1109/APCC.2009.5375551
