Differential output voltage up to 8.0 Vpp and data rates greater than 25 Gbps
Works with leading differential Mach Zehnder modulators from Fujitsu and Sumitomo Osaka Cement Company
As the transmission line rate increases from 10 Gbps to 40 Gbps, significant fiber impairments limit how far the signal can be transmitted before regeneration
For standard Non-Return-to-Zero transmission method, these impairments limit the transmission distance to a few kilometers
Differential Quadrature Phase Shift Keying is emerging as one of the most powerful transmission methods for 40G applications
Unlike the NRZ transmission method that transmits one bit of data per symbol, this unit encodes two bits of data per symbol, which effectively cuts the transmission line rate in half
Thus these systems are less sensitive to fiber impairments than other transmission methods at the native 40 Gbps line rate and can transmit 40 Gbps data well over 1,000 kilometers
Future 100 Gbps systems may rely on even more sophisticated coding schemes to encode 4 bits of data per symbol so that 100 Gbps data can be transmitted at a line rate of approximately 25 Gbps
Demonstrated to work beyond the minimum specification of 25 Gbps
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Differential output voltage up to 8.0 Vpp and data rates greater than 25 Gbps
