"

Cookies ussage consent

Our site saves small pieces of text information (cookies) on your device in order to deliver better content and for statistical purposes. You can disable the usage of cookies by changing the settings of your browser. By browsing our site without changing the browser settings you grant us permission to store that information on your device.

I agree, do not show this message again.

Resonant transmission in a dielectric photonic crystal with a thin metallic coating

TZU-CHYANG KING1, PEI-CHIU TSAI1, YA-LING LIN1, CHI-CHUNG LIU2, CHIEN-JANG WU3,*

Affiliation

  1. Department of Applied Physics, National Pingtung University of Education, Pingtung 900, Taiwan
  2. Department of Electro-Optics Engineering, National Formosa University, Yunlin 632, Taiwan
  3. Institute of Electro-Optical Science and Technology, National Taiwan Normal University, Taipei 116, Taiwan

Abstract

In this work, the resonant optical transmission (ROT) in a dielectric-dielectric photonic crystal (DDPC) with a thin metallic coating operating in the visible is theoretically investigated. First, the phenomenon of ROT is shown to occur at the frequency within the photonic band gap (PBG). To obtain a significant ROT, there is an optimum stack number for the DDPC and an optimum thickness of thin metal layer. The phenomenon of ROT can be explained by the condition of impedance matching. Second, the effect of different metallic films on the ROT is also examined. It is found that the frequency of ROT is blue-shifted for the metal with a larger plasma frequency. Finally, the behavior of ROT is investigated as a function of angle of incidence for both TE and TM waves. The frequency of ROT is blue-shifted as the angle of incidence increases for TE and TM waves. In TM wave, it is of interest to find that there are two ROTs within the photonic band gaps. The analysis made is based on the use of the transfer matrix method..

Keywords

Photonic crystal, Resonant transmission, Photonic band gap.

Submitted at: Oct. 19, 2012
Accepted at: Sept. 18, 2013

Citation

TZU-CHYANG KING, PEI-CHIU TSAI, YA-LING LIN, CHI-CHUNG LIU, CHIEN-JANG WU, Resonant transmission in a dielectric photonic crystal with a thin metallic coating, Journal of Optoelectronics and Advanced Materials Vol. 15, Iss. 9-10, pp. 932-936 (2013)