Ciena introduced its “WaveLogic 3” software-programmable optical processor aimed at extending the reach and flexibility of 100G coherent connections while paving the way for 400G technology.
Ciena describes this new generation of silicon chips as fundamental for the migration to dynamic, software-defined Terabit networking. The software programmability of WaveLogic 3 enables network operators to constantly monitor optical transmission performance and optimize the transmission for various applications—including low latency—over metro, ultra-long haul or trans-Pacific submarine distances.
Some key technologies implemented in WaveLogic 3:
Transmit DSP— Ciena has integrated digital signal processing in the transmitter (Tx DSP), enabling sophisticated programmable modulation, including 16QAM for greater than 100 Gbps speeds. This also allows operators to adjust network settings to meet varying reach and capacity demands. The DSP also provides spectral shaping, which reduces network cost by improving system margin in metro environments, and pre-compensation, which allows service providers to run higher capacity services over older fiber links, maximizing network investment.
Soft FEC — Ciena’s new intelligent soft-decision forward error correction (soft FEC) algorithm extends maximum service reach and enables practical deployment of higher capacity (>100G) systems. The Soft FEC in WaveLogic 3 is software-programmable, allowing operators to adjust for latency and reach, depending on application needs.
Next-generation DSP receiver — Ciena’s completely redesigned DSP receiver achieves 75 trillion operations per second—six times the processing power of WaveLogic 2. An advanced 32 nm CMOS process is used to provide the highest level of integration with lower power consumption Additional enhancements in PMD compensation ensure better performance in existing networks with non-optimal fiber conditions, allowing customers to extract more capacity out of their existing infrastructure rather than incurring the cost and complexity of laying new fiber.
http://www.ciena.com
