Abstract
This paper presents a novel cost-effective multicast-capable optical cross connect (MC-OXC)
node architecture that features both tap-and-continue and tap-and-binary-split functionality. This
architecture provides an interesting balance between simplicity, power efficiency and overall
wavelength consumption with respect to models based on TaC (Tap and Continue) or SaD
(Split-and-Delivery). The main component of this node is a novel Tap-and-2-Split Switch (Ta2S). In
this paper, we propose and analyse an implementation of this switch based on integrated optics
(namely, MMI taps and MZI switches), and we characterize and compare it with other alternatives
implemented with the same technology. The study shows that, thanks to the presented Ta2S design,
the 2-Split Tap Continue (2STC) node scales better in terms of number of components than the other
alternatives. Moreover, it is more power efficient than the SaD design and requires less
wavelengths than TaC thanks to the binary split capability. On the other hand, simulation results
reveal that the 2-split condition does not add a significant additional wavelength consumption in
usual network topologies with respect to SaD.
© 2009 IEEE
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