Efficient color routing with a dispersion-controlled waveguide array

Yi-Kun Liu; Si-Cong Wang; Yong-Yao Li; Li-Yan Song; Xiang-Sheng Xie; Ming-Neng Feng; Zhi-Ming Xiao; Shao-Zhi Deng; Jian-Ying Zhou; Jun-Tao Li; Kam Sing Wong; Thomas F Krauss

doi:10.1038/lsa.2013.8

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Efficient color routing with a dispersion-controlled waveguide array

Original Articles

- Efficient color routing with a dispersion-controlled waveguide array
- Light: Science & Applications Vol. 2, Issue 1-2, (2013)
- Affiliations：
  
  1.State Key Laboratory of Optoelectronic Materials and Technologies, Sun Yat-sen University, Guangzhou 510275, China
  2.Department of Physics, Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
  3.SUPA, School of Physics and Astronomy, University of St Andrews, St Andrews, Fife, KY169SS, UK
- Author bio：
  
  JY Zhou, State Key Laboratory of Optoelectronic Materials and Technologies, Sun Yat-sen University, Guangzhou 510275, China E-mail: stszjy@mail.sysu.edu.cn
  TF Krauss, SUPA, School of Physics and Astronomy, University of St Andrews, St Andrews, Fife, KY169SS, UK E-mail: tfk@st-andrews.ac.uk
- Funds：
- DOI：10.1038/lsa.2013.8
  CLC：
- Published：2013-06，
  
  Published Online：01 February 2013，
  
  Received：15 February 2012，
  
  Revised：03 July 2012，
  
  Accepted：01 October 2012
- Accepted：
Scan QR Code
Liu, Y. K. et al. Efficient color routing with a dispersion-controlled waveguide array. Light: Science & Applications, 2, e52 (2013).
DOI：

Liu, Y. K. et al. Efficient color routing with a dispersion-controlled waveguide array. Light: Science & Applications, 2, e52 (2013). DOI： 10.1038/lsa.2013.8.

摘要

Abstract

Splitting white light into its constituent spectral components has been of interest ever since Newton first discovered the phenomenon of color separation. Many devices have since been conceived to achieve efficient wavelength separation

yet a large number of applications

e.g.

in display technology

still use simple color absorption or rejection filters that absorb or reflect unwanted wavelengths

thus wasting luminous energy. Here

we demonstrate a novel microsized device concept that enables efficient color routing. The device operation is based on differential material dispersion in a waveguide array

which causes different wavelength signals to couple selectively into appropriate waveguides. A theoretical power delivery of greater than 50% for a tricolor wavelength router is obtained

compared to 33% expected from geometry alone. The principle of operation is demonstrated experimentally for a dual-color light field

where we achieve a higher than 70% routing efficiency (compared to 50% from geometry)

thus highlighting the feasibility of this novel and promising approach.

关键词

Keywords

color filtersdispersionpropagationroutewaveguides

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