Design and characterization of whispering-gallery spiral waveguides

被引：17
作者：
Chen, Tong [1 ]
Lee, Hansuek [1 ]
Vahala, Kerry J. [1 ]
机构：
[1] CALTECH, TJ Watson Lab Appl Phys, Pasadena, CA 91125 USA
来源：
OPTICS EXPRESS | 2014年 / 22卷 / 05期
关键词：
SILICON CHIP; RESONATOR;
D O I：
10.1364/OE.22.005196
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Whispering gallery delay lines have demonstrated record propagation length on a silicon chip and can provide a way to transfer certain applications of optical fiber to wafer-based systems. Their design and fabrication requires careful control of waveguide curvature and etching conditions to minimize connection losses between elements of the delay line. Moreover, loss characterization based on optical backscatter requires normalization to account for the impact of curvature on backscatter rate. In this paper we provide details on design of Archimedean whispering-gallery spiral waveguides, their coupling into cascaded structures, as well as optical loss characterization by optical backscatter reflectometry. (c) 2014 Optical Society of America
引用
收藏
页码：5196 / 5208
页数：13
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