Enhanced transmission through the subwavelength magnetic slits

Yongbing Long; Guo Ping Wang

doi:10.1117/12.523211

7 May 2004 Enhanced transmission through the subwavelength magnetic slits

Yongbing Long, Guo Ping Wang

Author Affiliations +

Proceedings Volume 5281, Optical Transmission, Switching, and Subsystems; (2004) https://doi.org/10.1117/12.523211
Event: Asia-Pacific Optical and Wireless Communications, 2003, Wuhan, China

Abstract

According to the standard diffraction theory, apertures much smaller than the wavelength of electromagnetic waves transmit poorly. But it's observed experimentally that the transmission through arrays of subwavelength metallic structures exhibits peaks at some wavelengths. These properties implies novel applications including dynamic optical subwavelength filters, optic switches, and subwavelength optical fiber couplers. In this paper, we theoretically investigate the transmission of electromagnetic waves through subwavelength magnetic slit arrays. The calculated results show that the transmission can be enhanced at wavelengths without exciting surface polaritons. This enhancement is attributed to the slit-perpendicular surface current induced by the incident electromagnetic waves. Additionally, the position of the enhanced peaks shifts to longer wavelengths and the strength of the peaks exhibits more complicated properties with increasing the permeability of the magnetic material constructing the gratings.

Citation Download Citation

Yongbing Long and Guo Ping Wang "Enhanced transmission through the subwavelength magnetic slits", Proc. SPIE 5281, Optical Transmission, Switching, and Subsystems, (7 May 2004); https://doi.org/10.1117/12.523211

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

;

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE