Giant angular dispersion mediated by plasmonic modal competition

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题名:	Giant angular dispersion mediated by plasmonic modal competition
作者:	Tai,CY;Yu,WH;Chang,SH
贡献者:	光電科學與工程學系
关键词:	LIGHT
日期:	2010
上传时间:	2012-03-27 18:14:31 (UTC+8)
出版者:	國立中央大學
摘要:	We report on the modal competition mediated angular dispersion by heterogeneously coupled plasmonic waveguides. By varying the wavelength of the excitation, the surface waves propagate alongside the upper and lower interfaces can be manipulated in coupled, decoupled, and cutoff regimes. Depending on the coupling states, the output beam can be steered between +15 degrees and -17 degrees for wavelength from lambda = 695nm to lambda = 675nm. The maximum achieved angular dispersion can be as large as 2.1 degrees/nm. This finding may revolutionize current design concept of spectrometers, providing a significant way to scale down the form factor further into nano-size. (C) 2010 Optical Society of America
關聯:	OPTICS EXPRESS
显示于类别:	[光電科學與工程學系] 期刊論文

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