Novel WDM passive optical network with bidirectional protection

Tsan-jim Chan; Calvin C.K. Chan; Kit Chan; Wai Hung; Lian-Kuan Chen

doi:10.1117/12.481069

29 August 2002 Novel WDM passive optical network with bidirectional protection

Tsan-jim Chan, Calvin C.K. Chan, Kit Chan, Wai Hung, Lian-Kuan Chen

Proceedings Volume 4909, Network Design and Management; (2002) https://doi.org/10.1117/12.481069
Event: Asia-Pacific Optical and Wireless Communications 2002, 2002, Shanghai, China

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.

Citation Download Citation

Tsan-jim Chan, Calvin C.K. Chan, Kit Chan, Wai Hung, and Lian-Kuan Chen "Novel WDM passive optical network with bidirectional protection", Proc. SPIE 4909, Network Design and Management, (29 August 2002); https://doi.org/10.1117/12.481069

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