论文标题
使用掺杂的铬蛋白膜的超快全辐射开关
Ultrafast all-optical switching using doped chromoprotein films
论文作者
论文摘要
下一代通信网络需要> tbit/s单渠道数据传输，并在网络节点上使用子秒开关和路由器进行处理。启用超快全光开关的材料具有很高的潜力，可以解决当前光电电路的速度限制。已经证明，染色蛋白表现出快速光控制的折射率变化，远大于由于纯粹的电子非线性而引起的光学KERR效应引起的变化大得多，从而减轻了光学切换的驱动能量需求。在这里，我们报告了飞秒的短暂瞬态光栅实验，这些实验证明了通过光活性黄蛋白的水合薄膜<200-fs全辐射转换的可行性，并首次将结果与使用细菌紫红素获得的结果进行比较。讨论了在极高的高速光学调制和用名义上无限灭绝对比度的切换/路由中实际利用该方案的可能性。
Next-generation communication networks require > Tbit/s single-channel data transfer and processing with sub-picosecond switches and routers at network nodes. Materials enabling ultrafast all-optical switching have high potential to solve the speed limitations of current optoelectronic circuits. Chromoproteins have been shown to exhibit a fast light-controlled refractive index change much larger than that induced by the optical Kerr effect due to a purely electronic nonlinearity, alleviating the driving energy requirements for optical switching. Here, we report femtosecond transient grating experiments demonstrating the feasibility of < 200-fs all-optical switching by hydrated thin films of photoactive yellow protein, for the first time, and compare the results with those obtained using bacteriorhodopsin. Possibilities for the practical utilization of the scheme in extremely high-speed optical modulation and switching/routing with nominally infinite extinction contrast are discussed.
