Cascaded integrated waveguide linear microcavity filters

被引：4

作者：

Pruessner, Marcel W. ^{[1
]}

Stievater, Todd H. ^{[1
]}

Goetz, Peter G. ^{[1
]}

Rabinovich, William S. ^{[1
]}

Urick, Vincent J. ^{[1
]}

机构：

[1] Naval Res Lab, Washington, DC 20375 USA

来源：

APPLIED PHYSICS LETTERS | 2013年 / 103卷 / 01期

关键词：

FABRY-PEROT FILTERS; RESONATOR;

D O I：

10.1063/1.4813073

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We experimentally demonstrate cascaded Fabry-Perot microcavity filters fabricated on silicon-on-insulator substrates. The cavities are formed by etching three sets of quarter-wavelength trenches along a rib waveguide, each set forming a Bragg reflector. Various configurations are examined with a view towards maximizing the filter extinction and minimizing the linewidth. We investigate the origin of spurious cavity modes and show how these are minimized. The effect of mode-splitting due to inter-cavity coupling is suppressed by increasing the reflectivity of the center mirror. Experimental results compare well with transfer matrix predictions.

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页数：5

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