Ultrafast tunable optical delay in slow light photonic crystal waveguides

I. Rey, D. Beggs, T. Kampfrath, L. Kuipers, T. Krauss
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Abstract

We propose a new design for compact tunable optical delay lines, based on adiabatic wavelength conversion and group velocity dispersion, in engineered silicon slow light photonic crystal waveguides. Actuation is performed over a small fraction of the device area, allowing for efficient operation in terms of switching power. We report on the experimental demonstration of variable delays up to 15 ps in a 300 µm long waveguide using this scheme, thus realising an ultrafast tunable delay line in an integrated format.
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慢光光子晶体波导中的超快可调光延迟
我们提出了一种基于绝热波长转换和群速度色散的工程硅慢光光子晶体波导中的紧凑型可调谐光延迟线的新设计。驱动在器件面积的一小部分上执行,允许在开关功率方面进行有效的操作。我们报告了使用该方案在300 μ m长波导中高达15 ps的可变延迟的实验演示,从而实现了集成格式的超快可调延迟线。
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