Telecom Lead India: Huawei has unveiled its new WDM
prototype, improving upon the current mainstream commercial products that use a
50GHz fixed spectrum interval.
Huawei’s new WDM prototype features a flexible spectrum
interval with a minimum granularity of 12.5GHz, which increases the spectrum
utilization and flexibility of the WDM system, and lays a foundation for
multi-carrier technologies and bandwidth-flexible optical networks beyond 100G.
“After releasing the world’s first 10 petabit
all-optical switch prototype and the 400G DWDM prototype, Huawei has provided a
preview of next-generation optical networks by unveiling the highest efficiency
spectrum WDM prototype,” said Jack Wang, president of Huawei Transport
Network Product Line.
Huawei has deployed 20 commercial and more than 50 trial
100G networks. Huawei provides first-class transport network products, such as
WDM/OTN/MS-OTN, MSTP/Hybrid MSTP, microwave products, and end-to-end network
solutions.
According to Ovum, Huawei is ranked No. 1 in the global
optical network, WDM/OTN, and 40G network markets as of Q4 2011.
The demand for broadband services has fueled an increase
in transmission capacity and a drive towards 100G networks.
All current mainstream WDM systems are based on a 50GHz
or 25GHz spectrum interval, as spectrum utilization is insufficient for 400G
and 1T multi-carrier transmissions.
Hyundai’s WDM prototype increases the spectrum
utilization for large-capacity WDM systems. This compact spectrum solution will
make the high-speed signals of the multi-carrier slimmer, ensuring the fiber is
able to transfer signals more effectively.
Moreover, the WDM prototype supports 40G, 100G, 400G and
1T hybrid transmissions and is compatible with the 50GHz or 25GHz spectrum
interval legacy systems. It provides smooth evolution from 40G and 100G systems
to 400G and 1T systems, protecting investment on current networks.
This technology is one of the core technologies of
next-generation bandwidth-flexible optical networks. The signal of
next-generation bandwidth-flexible optical networks allows for automatic
adjustment of the modulation mode and line rate based on the transmission
distance and service capacity, changing the frequency width utilization.
