Surface plasmon resonance transmission filters at 1053 nm based on metallic grating with narrow slit

• 来源期刊: 中国物理B（英文版）
• 关键词: metallic grating surface plasmon extraordinary transmission
• 年，卷（期）: 2009,（3）
• 页码范围: 1029-1032
• 页数: 4页
• 语种: 英文

摘要

Metallic gratings with narrow slits can lead to special optical properties such as strongly enhancing the trans-mission and considerably strengthening the polarized effect. A narrow-band filter suitable for application in optical communication is designed by sandwiching a metallic grating between two identical dielectric films. The maximum transmission can reach 96% after optimizing the parameters of films and grating at a central wavelength of 1053 nm. It is the first time, to our knowledge, that such high transmission has been reported since the discovery of the extraor-dinarily high transmission through periodic holes or slits; moreover, the extremely polarized effect is also found in P mode of this symmetric grating.