Rare-earth-doped, large-mode-area, multimode, hybrid optical fibers and devices using the same

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	Rare-earth-doped, large-mode-area, multimode, hybrid optical fibers and devices using the same
其他题名	Rare-earth-doped, large-mode-area, multimode, hybrid optical fibers and devices using the same
	WINDELER, ROBERT S.; YABLON, ANDREW D.
	2007-07-25
专利权人	OFS FITEL, LLC
公开日期	2007-07-25
授权国家	欧洲专利局
专利类型	发明申请
摘要	A large mode area, rare-earth-doped optical fiber is configured to support multiple transverse modes of signal radiation within its core region. The fiber is a hybrid design that includes at least two axial segments having different characteristics. In a first axial segment the transverse refractive index profile is not radially uniform being characterized by a radial dip in refractive index. The first segment supports more than one transverse mode. In a second axial segment the transverse refractive index profile is more uniform than that of the first segment. The two segments are adiabatically coupled to one another. Illustratively, the second segment is a terminal portion of the fiber which facilitates coupling to other components. In one embodiment, in the first segment M12 > 0, and in the second segment M22« M12. In a preferred embodiment, M12>> 0 and M22 ~ 0.
其他摘要	大模式区域，稀土掺杂光纤被配置为在其核心区域内支持多个横向模式的信号辐射。纤维是混合设计，其包括至少两个具有不同特征的轴向段。在第一轴向区段中，横向折射率分布不是径向均匀的，其特征在于折射率的径向下降。第一段支持多种横向模式。在第二轴向区段中，横向折射率分布比第一区段的横向折射率分布更均匀。两个区段绝热地彼此耦合。说明性地，第二区段是光纤的末端部分，其便于耦合到其他组件。在一个实施例中，在第一段M12> 0中，在第二段M22中，在M12中。在优选的实施方案中，M12 >> 0和M22~0。
主权项	A multi-transverse-mode rare-earth-doped optical fiber comprising: a core region doped with at least one rare earth element, the cross-section of said core region having a transverse refractive index profile, a cladding region adjacent said core region, said core and cladding regions configured to support multiple transverse modes of optical signal radiation within said core region, said fiber including a first axial segment in which said profile is not radially uniform being characterized by a radial dip in refractive index, said first segment supporting more than one of said transverse modes, said fiber having a second axial segment optically coupled to said first segment, said profile of said second segment being more uniform than that of said first segment, and said segments being adiabatically coupled to one another.
申请日期	2006-10-18
专利号	EP1811616A2
专利状态	授权
申请号	EP2006021833
公开（公告）号	EP1811616A2
IPC 分类号	H01S3/067 \| G02B6/02 \| G02B6/036 \| G02B6/14 \| G02B6/26
专利代理人	-
代理机构	SCHOPPE, FRITZ
文献类型	专利
条目标识符	http://ir.opt.ac.cn/handle/181661/53860
专题	半导体激光器专利数据库
作者单位	OFS FITEL, LLC
推荐引用方式 GB/T 7714	WINDELER, ROBERT S.,YABLON, ANDREW D.. Rare-earth-doped, large-mode-area, multimode, hybrid optical fibers and devices using the same. EP1811616A2[P]. 2007-07-25.

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