Fano line shapes in transmission spectra of silicon photonic crystal resonators

被引:23
作者
Mehta, Karan K. [1 ]
Orcutt, Jason S. [1 ]
Ram, Rajeev J. [1 ]
机构
[1] MIT, Elect Res Lab, Cambridge, MA 02139 USA
关键词
COUPLED-MODE THEORY; WAVE-GUIDE; RESONANCE; CAVITY; SCALE;
D O I
10.1063/1.4794064
中图分类号
O59 [应用物理学];
学科分类号
摘要
Transmission measurements on symmetrically waveguide-loaded one-dimensional silicon photonic crystal microresonators are observed to exhibit Fano line shapes, which we find to be due to the interference between the resonant transmission and a leaky second-order quasi-transverse-electric mode partially guided through the photonic crystal. The line shape is tunable by varying the exciting fiber position, the material index, and via the cavity nonlinearity. This two-mode interference method applied to a one-dimensional silicon photonic crystal cavity represents a compact and tunable approach to obtaining such line shapes in integrated optical devices, with implications for efficient modulation of optical signals and nonlinear all-optical switching. (C) 2013 American Institute of Physics. [http://dx.doi.org/10.1063/1.4794064]
引用
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页数:4
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