Self-focusing lens in Sun-flower graded photonic crystal

被引：0
|
作者：
Liu W. [1 ]
Sun X. [1 ]
Wang S. [1 ]
Qi Y. [1 ]
机构：
[1] Henan Key Laboratory of Laser and Opto-electric Information Technology, School of Information Engineering, Zhengzhou University, Zhengzhou
来源：
Sun, Xiaohong (iexhsun@zzu.edu.cn) | 1600年 / Chinese Society of Astronautics卷 / 46期
关键词：
Flat lens; Graded photonic crystals; Luneburg lens; Self-focusing lens; Sun-flower;
D O I：
10.3788/IRLA201746.1120002
中图分类号：
学科分类号：
摘要：
Most photonic crystal lens based on square or triangular lattice usually uses high refractive index materials such as Si or SiO2. And the study on such lens has been focused on the infrared wavelength range. With the development of the visible light communication technology, the research of Sun-flower self-focusing lens with low refractive index materials in visible band becomes very meaningful. To meet that requirements, self-focusing lens based on Sun-flower shaped graded PC was proposed. Firstly, by comparing the convergence intensity of this proposed lens between TE-polarized and TM-polarized mode, the convergence effect of TM polarization was superior to the convergence effect of TE polarization. Then self-focusing flat lens based on TM mode Sun-flower graded PC was designed. The beat length of the flat lens was given by the simulation of optical field transmission. The layers of the flat lens were optimized, and the best number of the layers was 22. In the end, the influence of the number of columns was discussed. The results show that the intensity decreases as the number of columns reduces. It has great guiding significance to make optical integrated devices with high-performance convergence effect, short focal length and small volume. © 2017, Editorial Board of Journal of Infrared and Laser Engineering. All right reserved.
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共 15 条
  • [1] Lee P.T., Lu T.W., Fan J.H., Et al., High quality factor microcavity lasers realized by circular photonic crystal with isotropic photonic band gap effect, Applied Physics Letters, 90, 15, (2007)
  • [2] Zhang X., Sun X., Tang H.X., A 1.16-m-radius disk cavity in a sunflower-type circular photonic crystal with ultrahigh quality factor, Optics Letters, 37, 15, pp. 3195-3197, (2012)
  • [3] Bhattacharjee J., Siraji A.A., Alain M.S., Phase modulated circles in a sunflower-type circular photonic crystal with ultra-small mode area and high-Q cavity, Electrical Engineering and Information & Communication Technology (ICEEICT), 2014 International Conference on IEEE, (2014)
  • [4] Pan J., Su A., Meng C., Modulation of medium refractive index on filter performance of photonic crystal quantum well, Infrared and laser Engineering, 43, 3, pp. 833-837, (2014)
  • [5] Li W., Zhang Q., Huang H., Et al., Polarization properties of Tamm state of one-dimensional photonic crystal containing single-negative materials, Infrared and Laser Engineering, 43, 5, pp. 1600-1604, (2014)
  • [6] Yuan W., Zhang J., Qin Y., Et al., Near-infrared spectral region photonic crystal band gaps and KTP defect, Infrared and Laser Engineering, 45, 1, (2016)
  • [7] Smith D.R., Mock J.J., Starr A.F., Et al., Gradient index metamaterials, Phys Rev E, 71, 3, (2005)
  • [8] Howard J.W., Ryan-Howard D.P., Optical design of thermal imaging systems utilizing gradient-index optical materials, Optical Engineering, 24, 2, (1985)
  • [9] Wang C., Xu T., Bi S., Et al., Curve-fitting algorithm of measuring focusing constant of gradient-index fiber lens, Optics and Precision Engineering, 23, 12, pp. 3309-3315, (2015)
  • [10] Wu Q., Gibbons J.M., Park W., Graded negative index lens by photonic crystals, Optics Express, 16, 21, pp. 16941-16949, (2008)
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