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Wen-Shyang Hwang, Jih-Hsin Ho+ and Ce-Kuen Shieh+
Department of Electrical Engineering
National Kaohsiung University of Applied Sciences
Kaohsiung 807, Taiwan
+Department of Electrical Engineering
National Cheng Kung University
Tainan 701, Taiwan
This paper presents an optical network architecture for supporting the Internet protocol
(IP) packets directly over the wavelength division multiplexing (WDM) ring with
one tunable transmitter and multiple fixed receivers (TT-FRs). A well-known access
scheme based on carrier sense is adopted in this paper for all optical networks. An approximate
analysis, base on the M/G/1 queuing model, has been developed to evaluate
the performance of the network. The analytical results show an excellent agreement with
simulation results over a broad range of parameters. The results show that major part of
the packet transfer delay is coming from the propagation delay from a source to a destination.
It is also observed that the throughput characteristic of the network depends upon
the aggregated transmission capacity of the network. Both throughput and transfer delay
improve with the number of wavelengths used in the ring, that proportional to the current
escalation of WDM technology.
Received November 1, 2004; revised February 16, 2005; accepted April 18, 2005.
Communicated by David H. C. Du.
* This paper was partially supported by the National Science Council of Taiwan, R.O.C., under grand No.
90-2213-E-151-014.