发明申请
US20100079854A1 RARE-EARTH DOPED CORE MULTI-CLAD FIBER, FIBER AMPLIFIER, AND FIBER LASER
审中-公开
稀土多芯芯多层光纤,光纤放大器和光纤激光
- 专利标题: RARE-EARTH DOPED CORE MULTI-CLAD FIBER, FIBER AMPLIFIER, AND FIBER LASER
- 专利标题(中): 稀土多芯芯多层光纤,光纤放大器和光纤激光
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申请号: US12631621申请日: 2009-12-04
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公开(公告)号: US20100079854A1公开(公告)日: 2010-04-01
- 发明人: Shoji Tanigawa , Kentaro Ichii
- 申请人: Shoji Tanigawa , Kentaro Ichii
- 申请人地址: JP Tokyo
- 专利权人: FUJIKURA LTD.
- 当前专利权人: FUJIKURA LTD.
- 当前专利权人地址: JP Tokyo
- 优先权: JP2007-220891 20070828
- 主分类号: H01S3/094
- IPC分类号: H01S3/094 ; G02B6/036 ; H01S3/067
摘要:
A rare-earth doped core multi-clad fiber includes a core that includes a rare-earth element and a plurality of cladding layers that surround the core. An outermost cladding of the plurality of cladding layers is made of a polymer cladding, the plurality of cladding layers have a polygonal inner cladding, and a shape of a boundary between a second cladding from the outside and the outermost cladding does not have two-fold rotational symmetry. As a result, it is possible to provide a rare-earth doped core multi-clad fiber for an optical amplifier and a fiber laser that has low skew and is inexpensive.