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° 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.
© 2010 Optical Society of America
Original Manuscript: September 11, 2009
Revised Manuscript: November 16, 2009
Manuscript Accepted: November 27, 2009
Published: January 12, 2010
Vol. 5, Iss. 3 Virtual Journal for Biomedical Optics
Atiqur Rahman, Pavel A. Belov, Yang Hao, and Clive Parini, "Periscope-like endoscope for transmission of a near field in the infrared range," Opt. Lett. 35, 142-144 (2010)