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)
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-TextKeywords:
arrayed-waveguide grating (AWG); wavelength selective switch (WSS); nonblocking networks; Clos networks
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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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