Subdiffraction Photon Guidance by Quantum-Dot Cascades

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• 作者：Chia-Jean Wang ; Ludan Huang ; Babak A. Parviz ; Lih Y. Lin
• 刊名：Nano Letters
• 出版年：2006
• 出版时间：November 2006
• 年：2006
• 卷：6
• 期：11
• 页码：2549 - 2553
• 全文大小：244K
• 年卷期：v.6,no.11(November 2006)
• ISSN：1530-6992

文摘

We report on a waveguide composed of a cascade of gain-enabled quantum dots with subwavelength dimensions. Fabrication is demonstratedthrough DNA-mediated self-assembly and a two-layer molecular self-assembly process that enables rapid prototyping. The device, which isidentified with fluorescence microscopy and tested by optical near field detection, allows optical signal transfer at a well-defined wavelengthin flexible routing geometry, such as straight paths and 90 bends. The structure serves as a critical building block for nanophotonic systemswith high integration density.