NTT Electronics (NEL) announced an energy-efficient Digital Signal Processor ASIC for coherent 100G fiber optical communication systems. The chip was used to successfully carry out a 100G line-side vendor interoperability demonstration.
NTT Electronics said its Digital Signal Processing (DSP) ASSP provides Chromatic Dispersion (CD) compensation and Polarization Mode Dispersion (PMD) compensation without using expensive optical devices. Moreover, the Soft-Decision (SD) Forward Error Correction (FEC), which is included in the ASIC, improves the Optical Signal-to-Noise Ratio (OSNR) margin making the 100G systems backward compatible with existing 10G/40G systems.
http://www.ntt-electronics.com/en/news/2012_02_29.html
