发明名称 |
Grating-assisted directional coupler formed a nonlinear thin film therein |
摘要 |
The present invention provides to a novel grating-assisted directional coupler which is capable of appending a nonlinear thin film to a conventional linear grating-assisted directional coupler, to thereby significantly improve coupling efficiency and hence design a structure having optical multistable characteristics, which comprises; a thin film nonlinear optical waveguide with third-order nonlinearity, which having a first thickness; a first linear optical waveguide formed on the thin film nonlinear optical waveguide, which having a second thickness, wherein a linear refractive index of the first linear optical waveguide is more than that of the thin film nonlinear optical waveguide; an optical waveguide grating patterned in equi-distanced on top surface of the nonlinear optical waveguide; and a second optical waveguide formed at a portion which is displaced from top surface of the first linear optical waveguide by a predetermined distance.
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申请公布号 |
US5915053(A) |
申请公布日期 |
1999.06.22 |
申请号 |
US19970932648 |
申请日期 |
1997.09.17 |
申请人 |
ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE |
发明人 |
JEONG, JONG-SOOL;SONG, SEOK-HO |
分类号 |
G02B6/12;G02F1/35;(IPC1-7):G02B6/10 |
主分类号 |
G02B6/12 |
代理机构 |
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主权项 |
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地址 |
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