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Enhanced optical Kerr nonlinearity of MoS2 on silicon waveguides 被引量:5
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作者 Linghai Liu Ke Xu +3 位作者 Xi Wan Jianbin Xu Chi Yan Wong Hon Ki Tsang 《Photonics Research》 SCIE EI 2015年第5期206-209,共4页
A quasi-two-dimensional layer of MoS2 was placed on top of a silicon optical waveguide to form a MoS2–silicon hybrid structure. Chirped pulse self-phase modulation measurements were carried out to determine the optic... A quasi-two-dimensional layer of MoS2 was placed on top of a silicon optical waveguide to form a MoS2–silicon hybrid structure. Chirped pulse self-phase modulation measurements were carried out to determine the optica Kerr nonlinearity of the structure. The observed increase in the spectral broadening of the optical pulses in the MoS2–silicon waveguide compared with the silicon waveguides indicated that the third-order nonlinear effect in MoS2 is about 2 orders of magnitude larger than that in silicon. The measurements show that MoS2 has an effective optical Kerr coefficient of about 1.1 × 10-16m2∕W. This work reveals the potential application of MoS2 to enhance the nonlinearity of hybrid silicon optical devices. 展开更多
关键词 MO Enhanced optical Kerr nonlinearity of MoS2 on silicon waveguides MODE
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Alternative (1+1)-D Dark Spatial Soliton-Like Distributions in Kerr Media
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作者 D. Ramirez Martinez M.M. Mendez Otero +1 位作者 M.L. Arroyo Carrasco M.D. Iturbe Castillo 《Journal of Physical Science and Application》 2011年第3期196-203,共8页
In this paper, we solve numerically the nonlinear Schrodinger equation for a defocusing Kerr media with initial conditions different to the hyperbolic tangent function. We demonstrate that initial conditions with a si... In this paper, we solve numerically the nonlinear Schrodinger equation for a defocusing Kerr media with initial conditions different to the hyperbolic tangent function. We demonstrate that initial conditions with a similar position dependence than the hyperbolic tangent evolve to a hyperbolic tangent function, therefore can be considered as (1+1)-D spatial solitons. The waveguide induced by these conditions is not single mode; it has the capacity to confine one mode more. 展开更多
关键词 Kerr effect solitons optical optical waveguide nonlinear
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