Optical characteristics of bending multimode superstructure fiber gratings.
The dispersion characteristics of superstructure fiber gratings written in multimode fibers and side-polished multimode fibers are investigated at different bending curvatures. The experimental results show that the group time delay in multimode superstructure fiber gratings can be tuned more easily than that of superstructure gratings in single-mode fiber. This method can provide tunable dispersion of superstructure fiber gratings by controlling the bending curvatures for application in dispersion compensators, fiber sensors, or suitable optical filters of optical communication systems.
Fu
Ming-Yue
MY
Department of Avionics Engineering, Chinese Air Force Academy, Gangshan, Kaohsiung 820, Taiwan. fumy@cc.cafa.edu.tw
Liu
Wen-Fung
WF
Sheng
Hao-Jan
HJ
Ai
Lung
L
Peng
Hsin-Wen
HW
Tien
Chuen-Lin
CL