Commercial Applications

Capacity Upgrades of DWDM Systems | New DWDM Systems

CeLight is leading the way to coherent optical communications with its patent-pending VectorWAVE transport technology. VectorWAVE enables breakthrough price-performance by transporting 40 Gb/s and 20 Gb/s per wavelength using a unique combination of coherent optical communications, innovative QPSK modulation and detection, and optional polarization multiplexing.

VectorWAVE provides new degrees of freedom in DWDM systems by simultaneously increasing distance, spectral efficiency and capacity per fiber for optimal price-performance. VectorWAVE-driven DWDM systems will enable carriers to deploy submarine and terrestrial long haul routes for the lowest cost at the required distance and performance for new DWDM routes and for capacity upgrades of deployed DWDM systems.

Capacity Upgrades of Embedded DWDM Systems

Capacity upgrades of embedded DWDM systems present a financially attractive alternative to carriers and network operators who are looking to minimize new capital spending while leveraging the assets they already have. Since VectorWAVE technology can pack up to 40 Gb/s of capacity into 25 GHz channel spacing, upgrades of embedded DWDM systems are possible. Furthermore, after the upgrade, 10 Gb/s and higher rate services can be supported where previously precluded by the 2.5 Gb/s per channel limitation of the embedded system. This expands the revenue generating capability of the route.

Carriers and DWDM system vendors interested in capacity upgrades should contact CeLight at sales@celight.com.

Lowest Cost, High-Capacity Submarine System Upgrades By Reusing Existing Wet Plant
VectorWAVE-based transponders can be deployed on existing submarine systems to significantly increase capacity and thus extend the system's investment life. Instead of deploying new wet plant and systems, embedded systems can be upgraded from either 2.5 Gb/s or 10 Gb/s per wavelength to either 20 Gb/s or 40 Gb/s per wavelength, providing up to a 16-fold increase in system capacity. The upgrade offers as much or more new revenue-generating capability as installing a new parallel system without the high costs of new system planning, surveying, development, and deployment. A VectorWAVE-based capacity upgrade provides huge first cost savings in capital and expenses and faster time to market than deploying new systems. First-cost savings of over 90% can be achieved.

Cost-effective Capacity Upgrades of Embedded Terrestrial DWDM Systems
VectorWAVE-based transponders can be deployed on existing terrestrial systems to significantly increase capacity and thus extend the system's investment life. Instead of deploying new DWDM systems and fiber plant, embedded systems can be upgraded from either 2.5 Gb/s or 10 Gb/s per wavelength to either 20 Gb/s or 40 Gb/s per wavelength, providing up to a 16-fold increase in system capacity. The upgrade offers as much or more new revenue-generating capability as installing a new parallel system without the high costs of new system planning, surveying, development, and deployment. A VectorWAVE-based capacity upgrade provides attractive first cost savings in capital and expenses and faster time to market than deploying new systems.

Next Generation DWDM Systems for New Terrestrial and Submarine Applications

Enables Record Breaking “Capacity x Distance”
VectorWAVE can be used as the core of next generation DWDM systems to shatter the “capacity X distance” barriers of alternative technologies in terrestrial and submarine applications.

VectorWAVE technology is integrated on the transport side of DWDM transponders and is compatible with existing and planned client signal transmission formats. As an example, it can be used to combine four 10 Gb/s digital signals for transmission over a single wavelength for an aggregate payload capacity of 40 Gb/s. VectorWAVE wavelengths can be deployed at channel spacings as tight as 25 GHz. By using 160 C-band channels at 25 GHz spacing, a single C-band DWDM system can transport 6.4 Tb/s of capacity per fiber, more than six times the typical system capacity available today. By transporting 6.4 Tb/s over many thousands of kilometers without regeneration, VectorWAVE enables the highest “capacity X distance” performance factor in the industry, enabling system vendors to build lowest cost per bit per kilometer solutions for submarine and terrestrial extended long-haul and ultra-long-haul applications.

Breakthrough Savings for New Submarine DWDM Systems
CeLight's VectorWAVE Technology enables submarine system vendors to achieve the lowest system startup costs for multi-terabit applications over thousands of kilometers. It enables four times the capacity per fiber over other alternatives. As shown below, required system capacities can be deployed using just one fourth of the wet plant fibers and amplifiers required in competing systems. Since the wet plant forms a significant portion of system startup costs, VectorWAVE enables huge savings over competing technologies without sacrificing high capacity, distance, or network future-proofing.

VectorWAVE can also be configured to support 20 Gb/s wavelengths at even longer distances without regeneration or to increase the distance between optical amplifiers to lower overall submarine system costs.