中国物理B ›› 2018, Vol. 27 ›› Issue (1): 14205-014205.doi: 10.1088/1674-1056/27/1/014205
Comment on “Band gaps structure and semi-Dirac point of two-dimensional function photonic crystals” by Si-Qi Zhang et al.
Hai-Feng Zhang(章海锋)
- 1 College of Optoelectronic Engineering, Nanjing University of Posts and Telecommunications, Nanjing 210023, China;
2 College of Electronic and Information Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 211106, China
Comment on “Band gaps structure and semi-Dirac point of two-dimensional function photonic crystals” by Si-Qi Zhang et al.
Hai-Feng Zhang(章海锋)1,2
- 1 College of Optoelectronic Engineering, Nanjing University of Posts and Telecommunications, Nanjing 210023, China;
2 College of Electronic and Information Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 211106, China
摘要： Recently, Zhang et al. (Chin. Phys. B 26 024208 (2017)) investigated the band gap structures and semi-Dirac point of two-dimensional function photonic crystals, and the equations for the plane wave expansion method were induced to obtain the band structures. That report shows the band diagrams with the effects of function coefficient k and medium column ra under TE and TM waves. The proposed results look correct at first glance, but the authors made some mistakes in their report. Thus, the calculated results in their paper are incorrect. According to our calculations, the errors in their report are corrected, and the correct band structures also are presented in this paper.
中图分类号: (Photonic bandgap materials)
- 42.70.Qs