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All-optical switching of ultrafast solitons at 1560 nm in dual-core fibers with high contrast of refractive index
Optical Fiber Technology ( IF 2.7 ) Pub Date : 2021-03-30 , DOI: 10.1016/j.yofte.2021.102514
M. Longobucco , J. Cimek , D. Pysz , R. Buczyński , I. Bugár

We present a study of ultrafast solitonic all-optical switching in the C-band using dual-core optical fibers fabricated in-house. The two soft glasses used for the fiber express high contrast of refractive index at the level of 0.4. The core was made of a highly nonlinear lead-silicate glass, which, combined with the anomalous dispersion, allowed the solitonic propagation at low pulse energies. A convincing switching performance was demonstrated using the optimized fiber at hundreds of picojoule level of the in-coupled energy. The dedicated numerical simulations unveiled the solitonic propagation character of 75 fs excitation pulses influenced by dual-core asymmetry. All the key parameters of the switching, such as the optimal fiber length (38 mm), the switching contrast (4.5 dB) and the switching energy levels (200–700 pJ), were confirmed by the numerical results.



中文翻译:

高折射率折射率双芯光纤中超快孤子在1560 nm的全光切换

我们提出了使用内部制造的双芯光纤在C波段进行超快孤子全光切换的研究。用于纤维的两个软玻璃在0.4的水平上表现出高的折射率对比度。磁芯由高度非线性的硅酸铅玻璃制成,再加上反常色散,可以使孤子在低脉冲能量下传播。在数百皮焦耳级的耦合能量下,使用优化的光纤证明了令人信服的开关性能。专用的数值模拟揭示了受双芯不对称性影响的75 fs激发脉冲的孤子传播特性。切换的所有关键参数,例如最佳光纤长度(38毫米),切换对比度(4.5 dB)和切换能级(200–700 pJ),

更新日期:2021-03-31
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