Excitation of two-colored temporal solitons in a segmented quasi-phase-matching structure.
We conducted a numerical study on the excitation of a two-colored temporal soliton in a segmented quasi-phase-matching (QPM) structure. The device has three parts: a periodic QPM grating for second-harmonic generation, a single domain for phase shift, and a periodic QPM grating for soliton evolution. The second harmonic pulse generated in the first grating works as a seed in the cascaded up-and-down conversions in the second grating. The numerical results showed that the second harmonic seeding enables the excitation of soliton pulses with an improved spatio-temporal intensity profile in a broad bandwidth of the wave-vector mismatch.
Zeng
Xianglong
X
Key Laboratory of Specialty Fiber Optics and Optical Access Networks, SCIE, Shanghai University, Shanghai 200072, China. zenglong@shu.edu.cn
Ashihara
Satoshi
S
Wang
Zijie
Z
Wang
Tingyun
T
Chen
Yuping
Y
Cha
Myoungsik
M