Temperature-independent silicon subwavelength grating waveguides

被引：38

作者：

Schmid, J. H. ^{[1
]}

Ibrahim, M. ^{[2
]}

Cheben, P. ^{[1
]}

Lapointe, J. ^{[1
]}

Janz, S. ^{[1
]}

Bock, P. J. ^{[1
]}

Densmore, A. ^{[1
]}

Lamontagne, B. ^{[1
]}

Ma, R. ^{[1
]}

Ye, W. N. ^{[2
]}

Xu, D-X ^{[1
]}

机构：

[1] Natl Res Council Canada, Inst Microstruct Sci, Ottawa, ON K1A 0R6, Canada

[2] Carleton Univ, Dept Elect, Ottawa, ON K1S 5B6, Canada

来源：

OPTICS LETTERS | 2011年 / 36卷 / 11期

关键词：

ON-INSULATOR; DEPENDENCE;

D O I：

10.1364/OL.36.002110

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We demonstrate, by experiment and numerical calculations, temperature-independent subwavelength grating waveguides with a periodic composite core composed of alternating regions of silicon and SU-8 polymer. The polymer has a negative thermo-optic (TO) material coefficient that cancels the large positive TO effect of the silicon. Measurements and Bloch mode calculations were carried out over a range of silicon-polymer duty ratios. The lowest measured TO coefficient at a wavelength of 1550nm is 1.8 x 10(-6) K-1; 2 orders of magnitude smaller than a conventional silicon photonic wire waveguide. Calculations predict the possibility of complete cancellation of the silicon waveguide temperature dependence. (C) 2011 Optical Society of America

引用

页码：2110 / 2112

页数：3

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