Integrated Wireless-pon access Network Architectures Milos Milosavljevic

Chapter 2
2.3.2 Extended Wavelength Band 
As already mentioned the application of WDM 
networks is believed to deliver ultra high
dedicated wavelengths straight to homes and businesses 
in that front have progressively focused on
known as a colourless ONU 
Currently the chosen infrastructure
between power-splitter schemes and AWG
them in view of the MAC layer, network reach, flexibility and complexity. 
typically the terminology is reserved for the AWG
currently considerably costly to implement,
on the outside plant and disruption on
multi-wavelength transmission over
selection is done at each ONU by means of an additional 
Chapter 2 Next Generation Access Networks
25 
Figure 2-3: NG-PON roadmap [2] 
Wavelength Band Overlay over NG splitter-PON
As already mentioned the application of WDM over the existing optical backbone
deliver ultra high-speed services by enabling service providers to supply
dedicated wavelengths straight to homes and businesses [39-43]. In addition,
in that front have progressively focused on establishing wavelength independent ONU
known as a colourless ONU [3, 44, 45].
the chosen infrastructures to demonstrate the application of WDM, distinguish 
splitter schemes and AWG-based schemes with varying implications between 
them in view of the MAC layer, network reach, flexibility and complexity. 
lly the terminology is reserved for the AWG-based architectures, on one hand are 
considerably costly to implement, precisely operate and maintain as they require work 
disruption on existing services. A more practical appr
wavelength transmission over power splitting PON infrastructure
selection is done at each ONU by means of an additional optical band-pass filter 
Next Generation Access Networks 
PON
over the existing optical backbone in access 
bling service providers to supply 
. In addition, research initiatives 
wavelength independent ONUs, also 
the application of WDM, distinguish 
based schemes with varying implications between 
them in view of the MAC layer, network reach, flexibility and complexity. WDM-PONs, 
architectures, on one hand are 
precisely operate and maintain as they require work 
A more practical approach is to enable 
splitting PON infrastructures, whereby wavelength 
pass filter [3, 46, 47].

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