All-optical switching is the future direction of development, but also from the current development trend, this "future" is not far away. Many in the industry view: ROADM-based networking and scheduling is not sensitive to the rate applicable to ultra-high-speed optical networking and scheduling transmission systems, but also can greatly reduce power consumption and floor room. After years of gradual improvement technology, functionality and performance, CDC-F ROADM (ie colorless and directionless without conflict and supports flexible grid capacity reconfigurable optical forked Multiplexer) device has matured, basically solved the light layer networking encountered many problems. Some foreign operators in the deployment of 100G networks have begun to do large particles using ROADM traffic scheduling, a direct transition to an all-optical network. March 2015, Verizon announced the adoption of Ciena and Cisco's packet optical transport platform Metro 100G deployment, CDC-F ROADM technology for the first time to get a commercial scale. In the same month, Alcatel-Lucent announced that Verizon will use its latest CDC-F ROADM technology to upgrade Verizon's long-haul optical transport network.

Currently the industry is in a transition period towards all-optical network evolution, on the one hand, OTN electrical cross in the low-speed business of gathering and does have its great value for your business to do related protection, on the other hand, ROADM business for large particles Scheduling can really reduce improve system performance while transport costs, therefore, opto-electronic hybrid networking is the best stage of networking and scheduling, but also with the future smooth evolution to all-optical networks capability.

CDC-F ROADM allows transmission of SDN scheme is more complete

Flexible optical layer transmission scheduling is key capabilities of SDN. SDN transmission through open interfaces for user flexibility to respond to the needs of the client layer, while the transport layer can resource for unified planning, management, and scheduling, and to ensure that resources are used effectively. Before CDC-F ROADM technology is not mature, most equipment manufacturers in the transmission SDN in business management and scheduling focus primarily on OTN electrical cross-level (Layer 1), but the lack of (Layer 0) involved in the transmission of the optical layer SDN can not meet the future large particles, the wavelength-level business management and scheduling flexibility. CDC-F ROADM supports software control, according to the power control algorithm and a light layer path computation control algorithm to achieve the traffic management and routing optical layer, so that the transmission capacity SDN more complete, and that's really mature for the WAN SDN laid a solid Foundation.

With the growing business and high-speed transmission technology, traditional WDM and OTN networking technology has obviously powerless, CDC-F ROADM optical networks mature development has brought new networking technologies and ideas, by CDC- F ROADM and OTN electrical cross hybrid network, combining cross-layer network collaborative optimization, optical layer programmable capabilities for high-speed optical transmission network for sustainable development to build a modern interchange.