LOW-LOSS COHERENT-COUPLING Y-BRANCHES

被引：17

作者：

CHU, FS

LIU, PL

机构：

[1] Department of Electrical and Computer Engineering, State University of New York, Buffalo, Amherst, NY

来源：

OPTICS LETTERS | 1991年 / 16卷 / 05期

关键词：

D O I：

10.1364/OL.16.000309

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We propose the design of low-loss waveguide Y branches with coherently coupled bends. According to results of beam-propagation simulations, the excess loss of a complete Ti:LiNbO3 Y branch with a nominal half-branching angle of 1-degrees can be as low as -0.18 dB. Similar to the case of other cascaded Y branches, when two coherently coupled Y branches are cascaded, the power distribution at the output varies with the length of the straight connecting waveguide. Details of the Y-branch design that gives low loss and equal power splitting are presented.

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页码：309 / 311

页数：3

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