公开(公告)号：EP3367594A1

公开(公告)日：2018-08-29

申请号：EP16857401.0

申请日：2016-10-17

申请人： Nippon Telegraph And Telephone Corporation ,  NTT Electronics Corporation

发明人： HORIKOSHI Kengo ,  YOSHIDA Mitsuteru ,  OKAMOTO Seiji ,  HOSOYA Eiichi ,  YAMAZAKI Etsushi ,  ONUMA Yasuharu ,  TAKAMUKU Tomohiro ,  MIURA Naoki ,  YASUDA Sadayuki

IPC分类号： H04B10/61 ,  H04L27/34

摘要： A coherent optical reception device includes a local oscillation laser that supplies laser light, a coherent optical reception front-end unit that receives a multi-level modulated optical signal, demodulates the optical signal on the basis of the laser light, and converts a demodulated optical signal into an electrical analog signal, an analog-to-digital converter that converts the analog signal into a digital signal, a compensation unit that compensates for an influence of dispersion due to a wavelength or a polarized wave of the optical signal and recovers a carrier phase of the digital signal, a constellation distortion compensation unit that compensates for constellation distortion of the multi-level modulation included in the digital signal in which an influence of dispersion is compensated for by the compensation unit, and an error correction decoding unit that performs error correction of the digital signal in which the constellation distortion is compensated for.

公开(公告)号：EP3367594B1

公开(公告)日：2020-10-07

申请号：EP16857401.0

申请日：2016-10-17

申请人： Nippon Telegraph And Telephone Corporation ,  NTT Electronics Corporation

发明人： HORIKOSHI Kengo ,  YOSHIDA Mitsuteru ,  OKAMOTO Seiji ,  HOSOYA Eiichi ,  YAMAZAKI Etsushi ,  ONUMA Yasuharu ,  TAKAMUKU Tomohiro ,  MIURA Naoki ,  YASUDA Sadayuki

IPC分类号： H04B10/61 ,  H04L27/34 ,  H04B10/2513 ,  H04B10/2569 ,  H04B10/69 ,  H04L27/38 ,  H04B17/21 ,  H04L27/36 ,  G02F1/21 ,  H03M1/12 ,  H04L27/00