Na reduction in fiber optical couplers

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	Na reduction in fiber optical couplers
其他题名	Na reduction in fiber optical couplers
	HOLLAND, WILLIAM, R.; STRACHAN, WILLIAM, J.
	2012-03-29
专利权人	OFS FITEL, LLC
公开日期	2012-03-29
授权国家	世界知识产权组织
专利类型	发明申请
摘要	A fiber optical coupler comprises a bundle of optical fibers configured to couple light from a multiplicity of input light sources to an output port, each of the fibers comprising a multimode fiber having a core region and a cladding region surrounding the core region. The bundle has first and second axial sections arranged in tandem and adiabatically coupled to one another. Within the first section, the ratio of the cross-sectional core area of each of at least some of the fibers to the total cross-sectional area of each of those fibers is given by R1, and within the second section, the ratio of the cross-sectional core area of each of at least some of the fibers to the total cross-sectional area of each of those fibers is given by R2 > R1, where R2 is substantially constant along the axial length of the second section.
其他摘要	一种光纤耦合器，包括一束光纤，用于将来自多个输入光源的光耦合到输出端口，每个光纤包括多模光纤，该多模光纤具有芯区和围绕芯区的包层区。该束具有串联布置的第一和第二轴向部分，并且绝热地彼此耦合。在第一部分中，至少一些纤维中的每一个的横截面芯区域与每个纤维的总横截面积的比率由R1给出，并且在第二部分中，比率为至少一些纤维中的每一根纤维与每根纤维的总横截面积的横截面芯面积由R2> R1给出，其中R2沿第二部分的轴向长度基本恒定。
主权项	An optical coupler comprising: a bundle of optical fibers configured to couple light from a multiplicity of input light sources to an output port, each of said fibers comprising a multimode fiber having a core region and a cladding region surrounding said core region, each of said core regions characterized by a cross-sectional core area, each of said cladding regions characterized by a cross-sectional cladding area, and each of said fibers characterized by a cross-sectional total area, which is defined as the sum of the area of said core region and the area of said cladding region for each of said fibers, said bundle having first and second axial sections arranged in tandem, wherein the at least one core region of the fibers in the first axial section has a diameter, Dcorei and the surrounding cladding region has a diameter Dciadi , and cross-sectional area Aciadi , and the at least one core region of the fibers in the second axial section has a diameter Dcore2, and the surrounding cladding region has a diameter Dciad2 and cross-sectional area Aciad2, such that D- ciadi > Dciad2 or more generally Aciadi>Aciad2 .
申请日期	2011-09-21
专利号	WO2012040405A1
专利状态	未确认
申请号	PCT/US2011/052669
公开（公告）号	WO2012040405A1
IPC 分类号	G02B6/26
专利代理人	LAFEIR, ANN, MARIE
代理机构	-
文献类型	专利
条目标识符	http://ir.opt.ac.cn/handle/181661/54270
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	HOLLAND, WILLIAM, R.,STRACHAN, WILLIAM, J.. Na reduction in fiber optical couplers. WO2012040405A1[P]. 2012-03-29.