Numerical demonstration of compound structure broad pass-band optical metamaterial filter

作者：Zhong M^*; Ye Y H

来源：Applied Physics A-Materials Science & Processing, 2015, 119(2): 639-645.

DOI：10.1007/s00339-015-9006-6

We have presented a systematic numerical study about a compound structure to obtain a broad pass-band optical metamaterial filter at terahertz frequency. The designed structure consists of periodic composite metallic arrays and dielectric layer. In order to increase the pass-bandwidth of such metamaterial filter, the sidewall length of square hole is increased. The availability of bandwidth enhancement is verified by our simulation in this paper, which is performed through full-wave method by using the commercial software Ansoft HFSS 13.0. Based on analysis of this rich optical response, we found that the effective impedance matched to free space leads to the pass-bandwidth increased. We hope these results are useful to modulate the electromagnetic wave in optoelectronics, such as sensor and spectroscopy in the future.

• 出版日期2015-5
• 单位南京师范大学