Yokogawa and Fujitsu Develop 40 Gbps DQPSK Optical Transmission Technology; New Technology Enables Ultra High-capacity Inter-city Optical Networks

Tokyo, Japan, Apr 5, 2007 - (JCN Newswire) - Yokogawa Electric Corporation and Fujitsu Limited today announced the joint development of the world's first practical 40 Gbps optical transmission technologies using differential quadrature phase shift keying (DQPSK)[1]. The two companies