We verify the feasibility of the proposed theoretical strategy for designing the broadband near-zero permittivity (ENZ) metamaterial at optical frequency range with numerical simulations. In addition, the designed broadband ENZ stack is used as meta-atoms to build functional nanophotonic devices with extraordinary properties, including an ultranarrow electromagnetic energy tunneling channel and an ENZ concave focusing lens.
© 2012 Optical Society of America
Original Manuscript: May 23, 2012
Revised Manuscript: June 12, 2012
Manuscript Accepted: June 20, 2012
Published: July 19, 2012
Lei Sun, Kin Wah Yu, and Xiaodong Yang, "Integrated optical devices based on broadband epsilon-near-zero meta-atoms," Opt. Lett. 37, 3096-3098 (2012)