发明授权
- 专利标题： High bit rate bidirectional passive optical network, associated optical exchange and line termination device
- 专利标题（中）： 高比特率双向无源光网络，相关的光交换和线路终端设备
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申请号： US12664436申请日： 2008-06-18
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公开(公告)号： US08542997B2公开(公告)日： 2013-09-24
- 发明人: Erwan Pincemin , Naveena Genay
- 申请人： Erwan Pincemin , Naveena Genay
- 申请人地址： FR Paris
- 专利权人： France Telecom
- 当前专利权人： France Telecom
- 当前专利权人地址： FR Paris
- 代理机构： Drinker Biddle & Reath LLP
- 优先权： FR0755853 20070619
- 国际申请： PCT/FR2008/051081 WO 20080618
- 国际公布： WO2009/004244 WO 20090108
- 主分类号： H04J14/00
- IPC分类号： H04J14/00
摘要：
The invention relates to a passive optical network comprising an optical exchange linked by at least one optical fiber to at least one line termination device of said network, able to transmit a downlink optical signal phase-modulated in NRZ-DPSK format and to receive an uplink optical signal.According to the invention, said line termination device comprises means of converting the transmitted downlink optical signal phase-modulated in NRZ-DPSK format into an optical data signal amplitude-modulated in duobinary modulation format and means of generating an uplink optical signal phase-modulated in NRZ-DPSK format from the downlink optical signal phase-modulated in NRZ-DPSK format. The optical exchange is able to convert the uplink optical signal phase-modulated in NRZ-DPSK format into an optical data signal amplitude-modulated in duobinary modulation format.