Title :
Transverse-load characteristics of twisted long-period fibre gratings written by high-frequency CO2 laser pulses
Author :
Zhu, T. ; Rao, Y.J. ; Wang, J.L. ; Liu, M.
Author_Institution :
Dept. of Optoelectron. Eng., Chongqing Univ., China
fDate :
4/13/2006 12:00:00 AM
Abstract :
The transverse-load characteristics of a twisted long-period fibre grating (LPFG) written by high-frequency CO2 laser pulses are investigated for the first time to the authors´ knowledge. It is observed that such a twisted LPFG can weaken the strong orientation-dependence of the transverse load and enhance the transverse-load sensitivity considerably, when compared with a torsion-free LPFG, offering the potential for use as a dynamic load sensor by means of simple intensity detection.
Keywords :
carbon compounds; diffraction gratings; laser materials processing; optical fibre fabrication; CO2; dynamic load sensor; high frequency CO2 laser pulses; intensity detection; transverse-load characteristics; transverse-load sensitivity; twisted long-period fibre gratings;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20064446
