Open AccessThe light source, optical waveguide and light enhancement of nano-integrated optical circuit
Author(s) -
Dan Liú,
Ma Ren-Min,
Feifei Wang,
Zengxing Zhang,
ZhenSheng Zhang,
Xuejin Zhang,
Xiao Wang,
Bai Yong-Qiang,
Zhou Xiao,
LiXin Dai,
Zhang Bei
Publication year - 2008
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.57.371
Subject(s) - materials science , optoelectronics , waveguide , optics , near field scanning optical microscope , total internal reflection , photonic crystal , light emission , nano , semiconductor , photonics , nanophotonics , optical microscope , physics , scanning electron microscope , composite material
Scanning near-field microscopy (SNOM) was used to investigate the low-dimensional semiconductor fluorescence divices, which can work as micro-nano-light source, nano-optical waveguide and light enhancement component in nano-integrated optical circuit. It was found that the quality of semiconductor wire end emission was mainly determined by the sample radius. By designing the wire radius and topography reasonably, it can be used as the light source and optical waveguide in nano-integrated optical circuit. ZnO tetrapod, comb, and CdS multi-branch nano-ribbon also presented quite good adequacy for optical waveguide application, which can function well in light division, congregation, coupling and filtering. 2-D photonic crystal can enhance the light intensity of GaN based LED by as large as 5.2 times. About 30% fluorescence is confined to the surface of photonic crystal. This conclusion is helpful for the optimization of LED light emission. When the resonance excitation condition is fulfilled, Surface plasmm polaritons (SPP) will be excited at the interface between the semiconductor and the silver thin film, which will bring about strong enhancement of electromagnetic field at the interface. Photonic crystal and SPP can realize light enhancement under low_dimensional and nano-scale conditions. The experimental results show that both of them have the potential application as enhancement components in nano-integrated optical circuit.