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Proceedings Paper

Novel WDM passive optical network with bidirectional protection
Author(s): Tsan-jim Chan; Calvin C.K. Chan; Kit Chan; Wai Hung; Lian-Kuan Chen
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Paper Abstract

Passive optical networks (PONs) have recently emerged to be a promising approach to enhance the penetration of fiber towards the subscriber side, thus further enables delivery of higher data-rate services to the subscribers. They feature easy network maintenance as there is no active component at the remote node (RN). However, in conventional PONs, both upstream and downstream bandwidths have to be time-shared among all optical network units (ONUs). By applying WDM technique to PONs, the total system capacity can be further enhanced. Each ONU enjoys a dedicated bandwidth and resolves the ranging problem as in PONs. In both conventional PON and WDM-PON, little work has been done to offer protection capability though fiber fault detection methods have been extensively studied. We propose a novel network architecture for WDM-PON which offers 1:1 protection capability. In case of any fiber cut between remote node and ONUs, the affected ONU can re-route the wavelength channels via the adjacent ONU and can still maintain normal bidirectional traffic.

Paper Details

Date Published: 29 August 2002
PDF: 7 pages
Proc. SPIE 4909, Network Design and Management, (29 August 2002); doi: 10.1117/12.481069
Show Author Affiliations
Tsan-jim Chan, The Chinese Univ. of Hong Kong (Hong Kong)
Calvin C.K. Chan, The Chinese Univ. of Hong Kong (Hong Kong)
Kit Chan, The Chinese Univ. of Hong Kong (Hong Kong)
Wai Hung, The Chinese Univ. of Hong Kong (Hong Kong)
Lian-Kuan Chen, The Chinese Univ. of Hong Kong (Hong Kong)


Published in SPIE Proceedings Vol. 4909:
Network Design and Management
Qian Mao; Shoa-Kai Liu; Kwok-wai Cheung, Editor(s)

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