Optoelectronics Letters, Volume. 10, Issue 5, 395(2014)

Flat broadband slow light with low dispersion in coupled resonator optical waveguide based on one-dimensional photonic crystals

Chang-hong LI1、*, Yong WAN2, and Rui-tao YU1
Author Affiliations
  • 1College of Automation Engineering, Qingdao University, Qingdao 266071, China
  • 2College of Physics Science, Qingdao University, Qingdao 266071, China
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    By introducing multiple defect layers in one dimensional (1D) photonic crystal (PC), the broadband slow light with low dispersion is obtained. The slow light pass band is smoothed by adjusting the spacing and the number of cavities. In the optimized structure, the bandwidth is 8.556 1 nm with flatness below 8.805 2×10-4, the group velocity is in the range from 0.029c to 0.042 4c, and the group velocity dispersion (GVD) parameter D is in the range from -14.410 3 ps/(mm·nm) to 15.124 ps/(mm·nm). Moreover, by material optimization, the slow light properties can be improved further. With suitable materials, the slow light pass band can be broadened to 20.057 8 nm with flatness of 5.4×10-3, and the GVD parameter D decreases to the range from -4.657 8 ps/(mm·nm) to 4.790 4 ps/(mm·nm).

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    LI Chang-hong, WAN Yong, YU Rui-tao. Flat broadband slow light with low dispersion in coupled resonator optical waveguide based on one-dimensional photonic crystals[J]. Optoelectronics Letters, 2014, 10(5): 395

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    Paper Information

    Received: May. 1, 2014

    Accepted: --

    Published Online: Oct. 12, 2017

    The Author Email: Chang-hong LI (jiluch@126.com)

    DOI:10.1007/s11801-014-4071-1

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