Design and Analysis of Scalable WDM-Based Ethernet Hybrid-PON Architecture

Tae-Yeon KIM  NamUk KIM  Sang-Ho LEE  Jeong-Ju YOO  Byong-Whi KIM  

IEICE TRANSACTIONS on Communications   Vol.E90-B   No.5   pp.1032-1041
Publication Date: 2007/05/01
Online ISSN: 1745-1345
DOI: 10.1093/ietcom/e90-b.5.1032
Print ISSN: 0916-8516
Type of Manuscript: Special Section PAPER (Special Section on Advanced Transfer Technologies for the Next Generation Network)
passive optical network,  hybrid-PON,  reflective operation,  tunable laser device,  

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To overcome the demerits of two passive optical networks; the small link capacity of the TDM-PON, and the ineffective link utilization of the WDM-PON; we propose a novel access network architecture featuring a WDM-based feeder network and a TDM-based distribution network. In this paper, we examine the design issues of the key constituent of SWE-PON (Scalable WDM-based Ethernet hybrid-PON) to validate its economic and practical feasibility. For flawless network operation, the wavelength tuning rule is investigated so that it does not collide between wavelengths from the tunable lasers belonging to the WDM coupler. Also, the potential problem between the tunable laser and the reflective operational device is analyzed in detail. From the numerical analysis and simulation, we demonstrate the variation of the network performance in terms of the upstream traffic delay and throughput of the ONU in accordance with the sharing structure of distribution network and the number of tunable laser devices (TLDs) at the feeder network.