Efficient color routing with a dispersion-controlled waveguide array
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Efficient color routing with a dispersion-controlled waveguide array
Efficient color routing with a dispersion-controlled waveguide array
LSA2013年2卷第1-2期
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
Efficient color routing with a dispersion-controlled waveguide array[J]. LSA, 2013,2(1-2).
Liu, Y. K. et al. Efficient color routing with a dispersion-controlled waveguide array. Light: Science & Applications, 2, e52 (2013).
Efficient color routing with a dispersion-controlled waveguide array[J]. LSA, 2013,2(1-2). DOI: 10.1038/lsa.2013.8.
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.
Efficient color routing with a dispersion-controlled waveguide array
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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