Summary
International Symposium on Antennas and Propagation
2012
Session Number:4E2
Session:
Number:4E2-4
Improvement of Near-field Optical Storage System with an Artificial Negative Index Film
Taikei Suyama, Yaoju Zhang,
pp.-
Publication Date:2012/10/29
Online ISSN:2188-5079
Summary:
We report a new method of enhancing the intensity of spot and improving the air-gap width of a near-field optical storage system with a real artificial negative index film (NIF). This method is based on surface plasmas excited by NIF combining a polymer film. Numerical results show that when a properly designed NIF-polymer composite nano-layer is attached on the plane surface of the a solid immersion lens (SIL), both of the spot's intensity and the air-gap width of the system are much larger than those of a conventional near-field optical recording system with a bare SIL. In addition, the NIF-polymer composite layer can also effectively suppress the expansion of spot with the air-gap width of the optical storage.