Abstract

A modified star-ring architecture (MSRA) consisting of a star network on the upper level and many concatenated ring subnets on the lower level is proposed for subcarrier multiplexed passive optical network (SCM-PON). The upper level star network ensures high network capacity and its weakness in reliability is overcome by the concatenated ring subnets with self-healing capabilities. The self-healing function can be performed at remote nodes (RNs) by using optical switches (OS) to reconfigure the ring subnets if any link fails. Moreover, we design the cascade add/drop transceiver (CAT) structure in the lower level ring subnets to completely eliminate the optical beat interference (OBI) problem and achieve an OBI-free optical network. Finally,we set up an experimental network to demonstrate the feasibility of this cost-effective survivable structure.

[IEEE ]

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  1. T. H. Wood and N. K. Shankaranarayanan, "Operation of a passive optical network with subcarrier multiplexing in the presence of optical beat interference", J. Lightwave Technol., vol. 11, pp. 1632-1640, Oct. 1993 .
  2. R. D. Feldman, T. H. Wood, G. Raybon and R. F. Austin, "Effect of optical beat interference on the dynamic range of a subcarrier multiple access passive optical network using Fabry-Perot lasers", J. Lightwave Technol., vol. 14, pp. 711-715, May 1996.

J. Lightwave Technol. (2)

T. H. Wood and N. K. Shankaranarayanan, "Operation of a passive optical network with subcarrier multiplexing in the presence of optical beat interference", J. Lightwave Technol., vol. 11, pp. 1632-1640, Oct. 1993 .

R. D. Feldman, T. H. Wood, G. Raybon and R. F. Austin, "Effect of optical beat interference on the dynamic range of a subcarrier multiple access passive optical network using Fabry-Perot lasers", J. Lightwave Technol., vol. 14, pp. 711-715, May 1996.

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