Beam coupling in 2x2waveguide arrays in fused silica fabricated by femtosecond laser pulses.
We demonstrate the coupling of a 2x2 waveguide array produced by a femtosecond laser in fused silica. The coupling constants of the waveguide array are obtained by measuring the ratio of output power of each waveguide by the coupled-mode theory. The variation of the coupled power between four waveguides as a function of the propagation distance is investigated experimentally and theoretically.
Chen
Hongyun
H
Chen
Xianfeng
X
Xia
Yuxing
Y
Liu
Dayong
D
Li
Yan
Y
Gong
Qihuang
Q