First demonstration of digital coherent transmission in a deployed ROADM network with a 120 Gbit/s polarization-multiplexed 64 QAM signal

IEICE Electronics Express

Yixin Wang¹  Masaki Shiraiwa²  Naoya Wada²  Keisuke Kasai¹  Masataka Nakazawa¹  Yoshinari Awaji²  Toshihiko Hirooka¹ 

[1] Research Institute of Electrical Communication, Tohoku University;National Institute of Information and Communications Technology (NICT)

关键词: digital coherent transmission;    QAM;    ROADM;   

DOI  :  10.1587/elex.12.20150884

学科分类：电子、光学、磁材料

来源: Denshi Jouhou Tsuushin Gakkai

【 摘 要 】

References(10)We demonstrate the add/drop operation and transmission of 120 Gbit/s (10 Gsymbol/s) polarization-multiplexed (PDM) 64 QAM digital coherent signals in a deployed ROADM network. By equalizing waveform distortions at the ROADM node with an FIR filter, the QAM signal was successfully add/drop-multiplexed, and transmitted over a 50 km ring network testbed with neighboring 9 × 10 Gbit/s OOK WDM data. This indicates the applicability of digital coherent systems to the deployed ROADM network based on 10 Gbit/s OOK, and its upgradability to 120 Gbit/s PDM-64 QAM.

【 授权许可】

Unknown