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Letter

Generalization of an Optical ASA Switch

Department of Applied Math, National University of Tainan, Tainan City 70005, Taiwan
Appl. Sci. 2019, 9(6), 1096; https://doi.org/10.3390/app9061096
Received: 10 January 2019 / Revised: 25 February 2019 / Accepted: 8 March 2019 / Published: 15 March 2019
(This article belongs to the Special Issue PICs for Optical Interconnects)
An arrayed waveguide grating (AWG) is a kind of passive wavelength router, and it is the most promising technology for developing large optical switches. However, AWGs have poor scalability, and using small AWGs to construct a large switch has been done in many prior works. A novel AWG-based switch called ASA (AWG, Space switching, AWG) that does not use wavelength converters has been proposed. It can expand the switch size from N to N2 by using N × N AWGs. In this paper, we generalize the ASA switch by using only N × N AWGs, N × N space switches, and N wavelengths such that the switch size is expanded to Nt for any positive integer t. Since each port of an N × N AWG can transmit up to N wavelengths simultaneously, the total capacity of the generalized ASA switch is extended to be close to Nt+1 × the bandwidth of a wavelength channel, provided that the inputs which are located in the same port position of each input AWG are destined to distinct outputs. View Full-Text
Keywords: arrayed-waveguide grating (AWG); optical networks; rearrangeable nonblocking; wavelength-division-multiplexing (WDM) arrayed-waveguide grating (AWG); optical networks; rearrangeable nonblocking; wavelength-division-multiplexing (WDM)
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MDPI and ACS Style

Lin, B.-C. Generalization of an Optical ASA Switch. Appl. Sci. 2019, 9, 1096. https://doi.org/10.3390/app9061096

AMA Style

Lin B-C. Generalization of an Optical ASA Switch. Applied Sciences. 2019; 9(6):1096. https://doi.org/10.3390/app9061096

Chicago/Turabian Style

Lin, Bey-Chi. 2019. "Generalization of an Optical ASA Switch" Applied Sciences 9, no. 6: 1096. https://doi.org/10.3390/app9061096

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