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

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 8.5561 nm with flatnes...

Full description

Saved in:
Bibliographic Details
Published inOptoelectronics letters Vol. 10; no. 5; pp. 395 - 400
Main Author 李长红 万勇 于瑞涛
Format Journal Article
LanguageEnglish
Published Heidelberg Tianjin University of Technology 01.09.2014
Subjects
Lasers
Optical Devices
Optics
Photonics
Physics
Physics and Astronomy
一维光子晶体
光波导
分散性
宽带
平坦
材料优化
群速度色散
耦合谐振
Optic Express
Pass Band
Group Velocity
Photonic Crystal
Group Velocity Dispersion
Online AccessGet full text
ISSN1673-1905
1993-5013
DOI10.1007/s11801-014-4071-1

Cover

More Information
Summary: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 8.5561 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 5.4x103, and the GVD parameter D decreases to the range from -4.657 8 ps/（mm.nm） to 4.790 4 ps/（mm.nm）.
Bibliography: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 8.5561 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 5.4x103, and the GVD parameter D decreases to the range from -4.657 8 ps/（mm.nm） to 4.790 4 ps/（mm.nm）.
12-1370/TN
LI Chang-hong , WAN Yong , and YU Rui-tao （ 1. College of Automation Engineering, Qingdao University, Qingdao 266071, China 2. College of Physics Science, Qingdao University, Qingdao 266071, China）
ISSN:1673-1905
1993-5013
DOI:10.1007/s11801-014-4071-1