Excitation of two-colored temporal solitons in a segmented quasi-phase-matching structure
Xianglong ZengKey Laboratory of Specialty Fiber Optics and Optical Access Networks, SCIE, Shanghai University, Shanghai 200072, China. [email protected]Satoshi AshiharaDepartment of Applied Physics, Faculty of Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Nakacho, Koganei, Tokyo 184-8588, JapanZijie WangKey Laboratory of Specialty FiberOptics and Optical Access Networks, SCIE, Shanghai University, Shanghai 200072, ChinaTingyun WangKey Laboratory of Specialty FiberOptics and Optical Access Networks, SCIE, Shanghai University, Shanghai 200072, ChinaYuping ChenDepartment of Physics Shanghai Jiao Tong University Shanghai 200240 ChinaMyoungsik ChaDepartment of Physics, Pusan National University , Busan 609-735, Korea
2009en
ABI
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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.
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