Subdiffraction photon guidance by quantum-dot cascades.
We report on a waveguide composed of a cascade of gain-enabled quantum dots with subwavelength dimensions. Fabrication is demonstrated through DNA-mediated self-assembly and a two-layer molecular self-assembly process that enables rapid prototyping. The device, which is identified with fluorescence microscopy and tested by optical near field detection, allows optical signal transfer at a well-defined wavelength in flexible routing geometry, such as straight paths and 90 degrees bends. The structure serves as a critical building block for nanophotonic systems with high integration density.
Wang
Chia-Jean
CJ
Department of Electrical Engineering, Department of Physics, University of Washington, Seattle, Washington 98195, USA.
Huang
Ludan
L
Parviz
Babak A
BA
Lin
Lih Y
LY
D000327:Adsorption; D003102:Colloids / Q000737:chemistry; D003460:Crystallization; D004247:DNA / Q000737:chemistry; D008856:Microscopy, Fluorescence / Q000379:methods; D036103:Nanotechnology / Q000379:methods*; D055095:Optics and Photonics; D010100:Oxygen / Q000737:chemistry; D017785:Photons; D019904:Polymethyl Methacrylate / Q000737:chemistry; D045663:Quantum Dots; D012680:Sensitivity and Specificity; D013499:Surface Properties
D003102:Colloids; D004247:DNA; D019904:Polymethyl Methacrylate; D010100:Oxygen