All-optical high-speed signal processing with silicon-organic hybrid slot waveguidesx
All-optical high-speed signal processing with silicon-organic hybrid slot waveguidesx
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DOI：
10.1038/nphoton.2009.25
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发表时间：
2009-04-01
期刊：
影响因子：
35
通讯作者：
Leuthold, J.
中科院分区：
文献类型：
--
作者：
Koos, C.;Vorreau, P.;Leuthold, J.
基于绝缘体上硅技术的集成光学电路很可能成为光电子行业的中流砥柱。近年来，已经实现了一系列令人印象深刻的绝缘体上硅器件，包括波导(1，2)、滤光器(3，4)和光子晶体器件(5)。然而，由于双光子产生的自由载流子动力学缓慢，硅基全光开关仍然具有挑战性。在这里，我们展示了硅-有机混合集成克服了这样的固有限制，它结合了两个世界的最好的结果，使用成熟的CMOS工艺来制造波导，并通过分子束沉积在其上覆盖有机分子，这些有机分子可以有效地中介全光相互作用，而不会引入显著的吸收。我们制作了4 mm长的硅-有机混合光波导，其伽马非线性系数约为1×10(5)W-1 km(-1)，并实现了170.8 GB S(-1)到42.7 GB S(-1)的全光解复用。据我们所知，这是所展示的最快的硅光子光学信号处理。
Integrated optical circuits based on silicon-on-insulator technology are likely to become the mainstay of the photonics industry. Over recent years an impressive range of silicon-on-insulator devices has been realized, including waveguides(1,2), filters(3,4) and photonic-crystal devices(5). However, silicon-based all-optical switching is still challenging owing to the slow dynamics of two-photon generated free carriers. Here we show that silicon-organic hybrid integration overcomes such intrinsic limitations by combining the best of two worlds, using mature CMOS processing to fabricate the waveguide, and molecular beam deposition to cover it with organic molecules that efficiently mediate all-optical interaction without introducing significant absorption. We fabricate a 4-mm-long silicon-organic hybrid waveguide with a record nonlinearity coefficient of gamma approximate to 1 x 10(5) W-1 km(-1) and perform all-optical demultiplexing of 170.8 Gb s(-1) to 42.7 Gb s(-1). This is-to the best of our knowledge-the fastest silicon photonic optical signal processing demonstrated.