Cutoff wavelength of ridge waveguide near field transducer for disk data storage

被引：13
|
作者：
Peng, Chubing [1 ]
Jin, Eric X. [2 ]
Clinton, Thomas W. [1 ]
Seigler, Mike A. [1 ]
机构：
[1] Seagate Technol, Pittsburgh, PA 15222 USA
[2] Seagate Technol, Bloomington, MN 55435 USA
来源：
OPTICS EXPRESS | 2008年 / 16卷 / 20期
关键词：
D O I：
10.1364/OE.16.016043
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
The electromagnetic eigenmodes of and light transmission through a C-aperture to the far field, and to a storage medium, have been studied based on the full vectorial finite difference method. It is found that the cutoff wavelength of C-aperture waveguides in a gold film is much longer than that in a perfect electric conductor, and the fundamental mode is confined in the gap and polarized with the electric field along the gap. The light transmission resonance through C-apertures to far field and to a storage medium occurs at wavelengths below the waveguide cutoff wavelength. Measurements on the fabricated C-apertures confirm the mode confinement and transmission resonance. (c) 2008 Optical Society of America
引用
收藏
页码：16043 / 16051
页数：9
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