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

页码：16043 / 16051

页数：9

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