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Appl. Sci. 2017, 7(6), 555; doi:10.3390/app7060555

Construction of Nonblocking Wavelength/Space Switches with AWGs and WSSes

1
Department of Applied Math, National University of Tainan, Tainan 70005, Taiwan
2
Department of ECE, Hong Kong University of Science of Technology, Hong Kong, China
*
Author to whom correspondence should be addressed.
Received: 25 March 2017 / Revised: 7 May 2017 / Accepted: 22 May 2017 / Published: 26 May 2017
(This article belongs to the Special Issue Optical Interconnects)
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Abstract

In this paper, we how to use two technologies, AWG (arrayed-waveguide grating) and WSS (wavelength selective switches), to design nonblocking wavelength/space optical cross connects. An AWG is a passive device and can route multiple wavelengths simultaneously. However, to apply AWGs, there are several issues to consider, including the wavelength conversion range, crosstalk, and switch size constraint. We show a decomposition technique for designing an AWG-based nonblocking wavelength/space switch. The decomposition is carried out in a transformed space network. The new technique is simpler in concept and more flexible in setting switch sizes. We also study another class of wavelength/space switches that are based on WSSes and compare the two approaches in terms of the scalability, switch size constraint, and number of WCs (wavelength converters) required. View Full-Text
Keywords: arrayed-waveguide grating (AWG); wavelength selective switch (WSS); nonblocking networks; Clos networks arrayed-waveguide grating (AWG); wavelength selective switch (WSS); nonblocking networks; Clos networks
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Lin, B.-C.; Lea, C.-T. Construction of Nonblocking Wavelength/Space Switches with AWGs and WSSes. Appl. Sci. 2017, 7, 555.

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