期刊
OPTICS LETTERS
卷 35, 期 2, 页码 142-144出版社
OPTICAL SOC AMER
DOI: 10.1364/OL.35.000142
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- EPSRC [EP/E053025/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/E053025/1] Funding Source: researchfish
A possibility to transmit near field through a periscope-like endoscope formed by an array of bent metallic rods is investigated. This is a first step on the way to development of flexible near-field endoscopes. An effort to tunnel the near field of a crown-shaped object through the periscope with 45 degrees bending angle is made, and a shift in the operating frequency band with respect to that of the straight endoscope is observed. An analysis of transmission coefficient as a function of transverse wave vector has been provided for a better understanding of the device operation. A distinctive nature of surface waves appearing at both interfaces has also been reported. (C) 2010 Optical Society of America
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