Enhancement of Goos-Hanchen effect in a prism-waveguide coupling system with magneto-optic material

被引：0
|
作者：
Tang, Tingting [1 ]
Deng, Longjiang [1 ]
Qin, Jun [1 ]
Bi, Lei [1 ]
机构：
[1] Univ Elect Sci & Technol China, State Key Lab Elect Thin Films & Integrated Devic, Chengdu 610054, Peoples R China
来源：
PHYSICS AND SIMULATION OF OPTOELECTRONIC DEVICES XXII | 2014年 / 8980卷
关键词：
Goos-Hanchen (GH) shift; prism-waveguide coupling system; magneto-optic; plasmonic; PLASMON; OPTICS;
D O I：
10.1117/12.2041050
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
We report a theoretical study of the enhancement of Goos-Hanchen (GH) effect in a prism-waveguide coupling system with magneto-optic materials, including dielectric waveguide (Prism/Air/Ce:YIG/SiO2) and plasmonic waveguide (Prism/Au/Ce:YIG/SiO2) structures. Giant GH shift is observed in both waveguides. By applying opposite magnetic field across the CeYIG layer, a variation of the GH shift, namely MOGH (magneto-optical Goos-Hanchen effect) is observed. Compared to the reflectivity and Goos-Hanchen effects of the structures, the MOGH effect shows higher sensitivity for index variations, therefore is very promising for chemical or biomedical index sensors. The device performance as a function of layer dimension, material refractive index and magneto-optical properties are simulated and discussed in detail. It is observed that coupling layer, MO layer thickness and prism index plays an important role in the plasmonic waveguide to control MOGH effect.
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页数：12
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