Opnext further widens the capabilities of DPSK technology by continuously optimizing communications link performance based upon the chromatic dispersion, non-linear effects and real-time filtering conditions in the network. The new CO-DPSK modulation scheme optimizes for all the filtering conditions and offers advance performance than standard DPSK, partial bit delay DPSK (P-DPSK), or Switchable FSR in 50 GHz channel spacing and provides equivalent performance in the 100 GHz channel spacing. This new technology simplifies network design, enhances link performance and reduces manufacturing costs and inventory management, thus allowing simpler, higher volume installment of 40Gbps products.

Telecom equipment vendors are introducing multi-haul DWDM flexible platforms, enabling their carrier customers to configure for different applications, stated Shri Dodani, president of Opnext’s subsystems business unit. Opnext’s fourth generation 40G solution CO-DPSK MSA module allows them to integrate a single DPSK module at 40Gbps and support all of their applications without requiring manual configuration or complicated design rules, ultimately simplifying network design and lowering costs.

NSN’s hiT7300 and hiT7500 Optical Transport systems are designed and deployed as multi-haul systems with flexible configuration and reach in metro-regional and core network long haul applications, stated Marc Bohn, project manager optical components at Nokia Siemens Networks. Technologies like Opnext’s CO-DPSK that are adaptive in nature allow us to support all these applications across different networks with a single product while simplifying sparing, enabling volume deployment, and improving overall performance.

Currently, Opnext’s new CO-DPSK technology is sampling with volume shipments planned in the third quarter of 2009. The module will be on exhibit in company’s booth, #902 during OFC/NFOEC, from March 24 to March 26, 2009 at the San Diego Convention Center.