发明公开
EP3120471A1 MULTI-SPAN OPTICAL COMMUNICATIONS LINK HAVING REMOTE OPTICALLY PUMPED AMPLIFIER
审中-公开
OPTISCHE MULTI-SPAN-KOMMUNIKATIONSVERBINDUNGEN MIT OPTISCH GEPUMPTEMFERNVERSTÄRKER
- 专利标题: MULTI-SPAN OPTICAL COMMUNICATIONS LINK HAVING REMOTE OPTICALLY PUMPED AMPLIFIER
- 专利标题(中): OPTISCHE MULTI-SPAN-KOMMUNIKATIONSVERBINDUNGEN MIT OPTISCH GEPUMPTEMFERNVERSTÄRKER
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申请号: EP15711357.2申请日: 2015-03-04
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公开(公告)号: EP3120471A1公开(公告)日: 2017-01-25
- 发明人: PELOUCH, Wayne S. , CHANG, Do-IL
- 申请人: Xtera Communications. Inc.
- 申请人地址: 500 W. Bethany Drive Suite 100 Allen, TX 75013 US
- 专利权人: Xtera Communications. Inc.
- 当前专利权人: Xtera Communications. Inc.
- 当前专利权人地址: 500 W. Bethany Drive Suite 100 Allen, TX 75013 US
- 代理机构: Combes, David Johnathon
- 优先权: US201461955486P 20140319
- 国际公布: WO2015142523 20150924
- 主分类号: H04B10/291
- IPC分类号: H04B10/291
摘要:
A remote optically pumped amplifier in a multi-span optical communications link. A backwards Raman pump module performs backwards Raman amplification in an optical communications span that contains the remote optically pumped amplifier. A residual amount of backwards Raman pump power is then used to power the remote optically pumped amplifier. The remote optically pumped amplifier may be located 40 to 120 kilometers in optical distance from the backwards Raman pump module such that at least three milliwatts of residual Raman pump power is received by the remote optically pumped amplifier. The Raman pump module may be a multi-pump Raman pump module. A controller controls pump power provided by at least one of the pumps of the backwards Raman pump module, so as to at least partially compensate for optical signal strength versus wavelength variation introduced by the remote optically pumped amplifier and the backwards Raman pump module.
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