中国物理B ›› 2018, Vol. 27 ›› Issue (4): 44204-044204.doi: 10.1088/1674-1056/27/4/044204

• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇    下一篇

Photonic crystal structures: Beam deflector and beam router

Utku Erdiven, Erkan Tetik, Faruk Karadag   

  1. 1. Department of Physics, Arts and Sciences, Cukurova University, 01100, Adana, Turkey;
    2. Computer Education and Instructional Technology, Department of Education, Usak University, 64200, Usak, Turkey
  • 收稿日期:2017-10-22 修回日期:2017-12-25 出版日期:2018-04-05 发布日期:2018-04-05
  • 通讯作者: Erkan Tetik E-mail:erkan.tetik@usak.edu.tr

Photonic crystal structures: Beam deflector and beam router

Utku Erdiven1, Erkan Tetik2, Faruk Karadag1   

  1. 1. Department of Physics, Arts and Sciences, Cukurova University, 01100, Adana, Turkey;
    2. Computer Education and Instructional Technology, Department of Education, Usak University, 64200, Usak, Turkey
  • Received:2017-10-22 Revised:2017-12-25 Online:2018-04-05 Published:2018-04-05
  • Contact: Erkan Tetik E-mail:erkan.tetik@usak.edu.tr

摘要: We investigate the optical characteristic, transverse magnetic (TM) and transverse electric (TE) band of two-dimensional (2D) square lattice photonic crystal structure, which is composed of cylindrical air regions positioned at the corners of the square shaped dielectric rods. We obtain the wide photonic bandwidths between TM1-TM2 and TM3-TM4 bands. According to the results, we demonstrate the band gaps close to each other in the TM and TE frequencies for proposed structures. The resulting photonic gaps are formed to be about 8% at the higher frequencies of TE modes (TE4-TE5) and TM modes (TM7-TM8 and TM9-TM10). In addition, we examine isotropically generated structures for light guiding properties and observe that the light is directed in a particular route without using any deflection. We also investigate the self-collimation effect with the designed structure. The obtained results reveal the influences of the radius of cylindrical air holes and the angle between these air holes on absolute and partial photonic band gaps. Moreover, we observe the TM and TE band gaps that overlap. It is thought that the obtained band overlap will provide an easy way to produce the photonic crystals in practical applications like photonic insensitive waveguide. It is also believed that these results can provide the photonic crystal structures to work as a beam deflecting and beam router in integrated optical circuit applications.

关键词: photonic bandgap materials, electromagnetic wave propagation, beam characteristics

Abstract: We investigate the optical characteristic, transverse magnetic (TM) and transverse electric (TE) band of two-dimensional (2D) square lattice photonic crystal structure, which is composed of cylindrical air regions positioned at the corners of the square shaped dielectric rods. We obtain the wide photonic bandwidths between TM1-TM2 and TM3-TM4 bands. According to the results, we demonstrate the band gaps close to each other in the TM and TE frequencies for proposed structures. The resulting photonic gaps are formed to be about 8% at the higher frequencies of TE modes (TE4-TE5) and TM modes (TM7-TM8 and TM9-TM10). In addition, we examine isotropically generated structures for light guiding properties and observe that the light is directed in a particular route without using any deflection. We also investigate the self-collimation effect with the designed structure. The obtained results reveal the influences of the radius of cylindrical air holes and the angle between these air holes on absolute and partial photonic band gaps. Moreover, we observe the TM and TE band gaps that overlap. It is thought that the obtained band overlap will provide an easy way to produce the photonic crystals in practical applications like photonic insensitive waveguide. It is also believed that these results can provide the photonic crystal structures to work as a beam deflecting and beam router in integrated optical circuit applications.

Key words: photonic bandgap materials, electromagnetic wave propagation, beam characteristics

中图分类号:  (Photonic bandgap materials)

  • 42.70.Qs
41.20.Jb (Electromagnetic wave propagation; radiowave propagation) 29.27.Fh (Beam characteristics)