Abstract
We demonstrate a regenerative optical grooming switch for buffer-less interconnection of metro/access and metro/core ring networks with switching functionality in time, space and wavelength domain. Key functionalities of the router are the traffic aggregation with time-slot interchanging (TSI) functionality, the WDM-to-ODTM multiplexing and the OTDM-to-WDM demultiplexing of high-speed channel into lower bit-rate tributaries as well as multi-wavelength all-optical 2R regeneration of several higher-speed signals. BER and Q-factor measurements of different switching scenarios show excellent performance with no error floor and Q-factors above 21 dB.
Highlights
The enormous growth of IP traffic over the last years, which has been fueled by the proliferation of new integrated services and applications, i.e., high-speed data and video-ondemand, has dramatically increased the bandwidth and performance requirements in optical networks [1,2]
In the backbone network the introduction of the wavelength division multiplexing (WDM) technology is responding to this demand by the introduction of transparent high capacity networks over extended optical paths [3]
Those critical switching and traffic grooming functionalities are supported by the synchronous digital hierarchy (SDH) or the synchronous optical network (SONET) standard
Summary
The enormous growth of IP traffic over the last years, which has been fueled by the proliferation of new integrated services and applications, i.e., high-speed data and video-ondemand, has dramatically increased the bandwidth and performance requirements in optical networks [1,2]. Metro/access networks need to provide functionalities such as grooming and aggregation of the traffic to be able to connect a wide range of enterprise/private customers in the access with those in the backbone. On the other hand, have the potential to overcome those issues Compared to their electronic counterparts, optical switches are characterized by significantly lower power consumption and footprint, which leads to significant operational expenditures (OPEX) savings [6,7,8]. Optical switches offer larger indifference in terms of protocol, modulation format and bit rate as compared to their electronic counterparts This enhances the upgradeability of the networking infrastructure to higher capacity requirements and new types of data traffic.
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