1XN and NXN fiber optics couplers

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	1XN and NXN fiber optics couplers
其他题名	1XN and NXN fiber optics couplers
	JING-JONG, PAN; MING, SHIH; WEITI, WU; YU-LI, KO; DONNA, S, YU
	1999-07-28
专利权人	E-TEK DYNAMICS INC
公开日期	1999-07-28
授权国家	英国
专利类型	发明申请
摘要	The present invention provides fiber optic couplers (20) for use with at least three optic fibers (10). The optic fibers (10) arranged in linear-array, that is, the optical fibers (10) are coupled side by side, The fibers (10) along either end of the linear-array are coupled only to a single fiber (10A), while the remaining fibers are generally coupled between only two adjacent fibers (10). Generally, at least one of the fibers (10) has a propagation constant different than the other fibers (10). Such variations in the propagation constant are used to vary the coupling coefficients among the fibers (10) of the linear-array, thereby providing a repeatable mechanism, to vary coupled power ratios among the fibers (10) of coupler (20).; Theoretical calculations and empirical experience have shown that varying the propagation constant of fibers (10) among a linear-array, generally by pre-pulling the fibers (10) by varying amounts, allows repeatable manufacturing of 1x3, 3x3, 1x4, 4x4, 1xN and even NxN fiber couplers having even coupled power ratios.
其他摘要	本发明提供与至少三根光纤（10）一起使用的光纤耦合器（20）。以线性阵列布置的光纤（10），即光纤（10）并排耦合。沿线性阵列的任一端的光纤（10）仅耦合到单根光纤（10A）而剩余的纤维通常仅连接在两个相邻的纤维（10）之间。通常，至少一根纤维（10）的传播常数不同于其他纤维（10）。传播常数的这种变化用于改变线性阵列的光纤（10）之间的耦合系数，从而提供可重复的机制，以改变耦合器（20）的光纤（10）之间的耦合功率比。理论计算和经验经验表明，通常通过以不同的量预拉纤维（10）来改变线性阵列中纤维（10）的传播常数，允许可重复制造1x3,3x3,1x4,4x4,1xN甚至具有均匀耦合功率比的NxN光纤耦合器。
主权项	A fiber optic coupler comprising: a plurality of optic fibers, the optic fibers coupled side-by-side along a coupled length and having input ends and output ends extending from the coupled length, wherein a propagation constant of a first of the optic fibers is different than propagation constants of two of the optic fibers along the coupled length.
申请日期	1997-11-05
专利号	GB2333612A
专利状态	失效
申请号	GB1999007941
公开（公告）号	GB2333612A
IPC 分类号	G02B \| G02B6/28 \| G02B6/287 \| G02B6/26 \| G02B6/255
专利代理人	-
代理机构	-
文献类型	专利
条目标识符	http://ir.opt.ac.cn/handle/181661/52112
专题	半导体激光器专利数据库
作者单位	E-TEK DYNAMICS INC
推荐引用方式 GB/T 7714	JING-JONG, PAN,MING, SHIH,WEITI, WU,et al. 1XN and NXN fiber optics couplers. GB2333612A[P]. 1999-07-28.

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