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Journal of Electrical and Computer Engineering
Volume 2016 (2016), Article ID 2938415, 10 pages
http://dx.doi.org/10.1155/2016/2938415
Research Article

Remotely Powered and Reconfigured Quasi-Passive Reconfigurable Nodes for Optical Access Networks

1Department of Electrical Engineering, Stanford University, Stanford, CA 94305, USA
2Centre for Neural Engineering (CfNE), University of Melbourne, Melbourne, VIC 3010, Australia
3Department of Electrical and Electronic Engineering, University of Melbourne, Melbourne, VIC 3010, Australia

Received 25 November 2015; Accepted 24 January 2016

Academic Editor: Iraj Sadegh Amiri

Copyright © 2016 Yingying Bi et al. 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.

Abstract

Quasi-Passive Reconfigurable (QPAR) nodes have been proposed to provide flexible power/wavelength allocation in optical access networks. QPAR only consumes power during reconfiguration, which is remotely transmitted from the central office, thus maintaining the passive nature of the network. In this paper, a QPAR control circuit is designed, and a remotely powered and reconfigured QPAR (i.e., one wavelength, two power levels, and two output ports) with a 0.1 F/5 V supercapacitor (SC) remotely charged by a photodiode array is experimentally demonstrated. The charged SC can power the QPAR for at least 6 s with 24 consecutive reconfigurations (200 ms each) or two reconfigurations within a maximum period of 40 hours, before the SC needs to be recharged. In addition, the demonstrated QPAR remote power scheme is compared with the previously proposed Direct Photovoltaic Power option both theoretically and experimentally. Results show that the SC based remote power mechanism is capable of driving a large number of reconfigurations simultaneously and it is better for large dimension QPARs.