Figure 2 (IMAGE) (IMAGE) National Institute of Information and Communications Technology (NICT) Caption Part of the transmission system this time (Raman amplification section) Credit ©National Institute of Information and Communications Technology Usage Restrictions with credit License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.