- 专利标题: Short-term optical recovery systems and methods for coherent optical receivers
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申请号: US14816573申请日: 2015-08-03
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公开(公告)号: US10958338B2公开(公告)日: 2021-03-23
- 发明人: Hamid Mehrvar , Salih Jasarevic , Bernard Thiboutot , David Doucet
- 申请人: Ciena Corporation
- 申请人地址: US MD Hanover
- 专利权人: Ciena Corporation
- 当前专利权人: Ciena Corporation
- 当前专利权人地址: US MD Hanover
- 代理机构: Clements Bernard Walker
- 代理商 Lawrence A. Baratta, Jr.; Christopher L. Bernard
- 主分类号: H04B10/03
- IPC分类号: H04B10/03 ; H04B10/61 ; H04B10/032
摘要:
Short-term optical recovery systems and methods in coherent optical receivers minimize recovery time for fault scenarios and signal reacquisition while maintaining robust signal acquisition. The short-term optical recovery systems and methods include special techniques and algorithms to minimize recovery time, making coherent systems similar in time as conventional direct detection recovery. The short-term optical recovery systems and methods include an expedited acquisition engine that includes a reference clock recovery, a compensator to remove chromatic dispersion, a burst framer, and a compensator to remove polarization dispersion. Importantly, the expedited acquisition engine uses a memory oriented architecture to allow some properties of the acquisition engine to be stored during initial acquisition and, hence, later on be deployed in any fault scenario to expedite further recovery of a signal.
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