Share Abstract: Design of AWG-based WDM-PON architecture with multicast capability
Recently, the triple play service (TPS) has been considered to be a promising business model or application. Thus, the capability for multicast transmission has become a very important requirement for access networks. However, unlike existing passive optical networks (PONs), the arrayed-waveguide grating (AWG) based wavelength-division multiplexing (WDM)-PON does not have multicast capability because it is a P2P network for the downstream direction, from optical line terminal (OLT) to optical network units (ONUs). In this paper, AWG- based WDM-PON architecture with multicast capability is proposed. It provides high scalability and single copy broadcast (SCB) capability by employing multi-stage AWGs at a remote node (RN) and a multi-wavelength converter (MWC) at OLT. The performance of the proposed architecture is evaluated in terms of cost, scalability, link capacity and bandwidth per user, in both upstream and downstream directions, by comparison with other multicasting architectures.
Kyeong-Eun Han
Research Center for Advanced Image and Information
Technology, Chonbuk National University
Jeonju, 561-756, Korea
[email protected] Kyoung-Min Yoo
Department of Computer Engineering
Chonbuk National University
Jeonju, 561-756, Korea
[email protected] Abstract—Recently, the triple play service (TPS) has been
considered to be a promising business model or application.
Thus, the capability for multicast transmission has become a very
important requirement for access networks. However, unlike
existing passive optical networks (PONs), the arrayed-waveguide
grating (AWG) based wavelength-division multiplexing (WDM)-
PON does not have multicast capability because it is a P2P
network for the downstream direction, from optical line terminal
(OLT) to optical network units (ONUs). In this paper, AWG-
based WDM-PON architecture with multicast capability is
proposed. It provides high scalability and single copy broadcast
(SCB) capability by employing multi-stage AWGs at a remote
node (RN) and a multi-wavelength converter (MWC) at OLT.
The performance of the proposed architecture is evaluated in
terms of cost, scalability, link capacity and bandwidth per user,
in both upstream and downstream directions, by comparison
with other multicasting architectures.
Keywords-multicast;WDM-PON; multi-wavelength converter;
architecture; single copy broadcast; access network.
I. INTRODUCTION
Considering the exponential growth of Internet traffic and
emerging new applications such as high definition TV
(HDTV), interactive games and video conference, etc., there is
a need for much higher bandwidth. In particular, considering
that triple play service (TPS) which delivers integrated voice,
data and video services through a single network, will be
available, and this trend is likely to continue, access networks
must evolve based on increasing demand for more bandwidth.
The wavelength-division multiplexing (WDM)-passive
optical network (PON) has recently been considered to be an
original technology which can satisfy these bandwidth
requirements and overcome several limitations of existing
PONs, which employ a splitter at a remote node (RN) [1-3]. In
general, a PON employs end-to-end passive optical
transmission using two network segments: feeder and
distribution. Between the feeder and the distribution segments,
Free download for Ket-noi:
x468wP0vefkR4Cp
Please thank before downloading
