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1. 发明申请

WO1998021613A1 1XN AND NXN FIBER OPTIC COUPLERS 审中-公开
标题翻译： 1XN和NXN光纤耦合器
公开(公告)号：WO1998021613A1
公开(公告)日：1998-05-22
申请号：PCT/US1997020106
申请日：1997-11-05
申请人： E-TEK DYNAMICS, INC.
发明人： E-TEK DYNAMICS, INC. , PAN, Jing-Jong , SHIH, Ming , WU, Weiti , KO, Yu-Li , YU, Donna, S.
IPC分类号： G02B06/26
CPC分类号： G02B6/2856 , G02B6/3636 , G02B2006/2865
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.
摘要翻译：本发明提供了用于至少三个光纤（10）的光纤耦合器（20）。以线阵列布置的光纤（10），即光纤（10）并排耦合。沿着线性阵列的任一端的纤维（10）仅耦合到单个纤维（10A），而剩余的纤维通常仅在两个相邻的纤维（10）之间耦合。通常，纤维（10）中的至少一个具有与其它纤维（10）不同的传播常数。使用传播常数的这种变化来改变线阵列的光纤（10）之间的耦合系数，从而提供可重复的机构，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伸纤维（10），改变线性阵列中纤维（10）的传播常数允许重复制造1x3,3x3,1x4,4x4,1XN 甚至具有偶耦合功率比的NxN光纤耦合器。

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