Slotless dispersion-flattened waveguides with more than five zero-dispersion wavelengths  

作　　者：张家琅 张思远 姚俊娜 江新华 王安廷 詹其文 Jialang Zhang;Siyuan Zhang;Junna Yao;Xinhua Jiang;Anting Wang;Qiwen Zhan(Department of Optics and Optical Engineering,University of Science and Technology of China,Hefei 230026,China;School of Optical-Electrical and Computer Engineering,University of Shanghai for Science and Technology,Shanghai 200093,China)

机构地区：[1]Department of Optics and Optical Engineering,University of Science and Technology of China,Hefei 230026,China [2]School of Optical-Electrical and Computer Engineering,University of Shanghai for Science and Technology,Shanghai 200093,China

出　　处：《Chinese Optics Letters》2023年第10期55-59,共5页中国光学快报（英文版）

基　　金：supported by the National Key Research and Development Program of China(No.2020YFB2205802).

摘　　要：We propose a new type of dispersion-flattened waveguide without a slot-assisted structure that can obtain an ultra-flat group velocity dispersion profile with five or six zero-dispersion wavelengths in the mid-infrared region.The dispersion profile becomes less sensitive to the waveguide dimensions due to the absence of the slot-assisted structure,making waveguide fabrication more friendly.The dispersion profile varies between−0.472 and 0.365 ps/(nm·km)over a 2665 nm bandwidth from 2885 nm to 5550 nm with a flatness of 3183.99 nm2·km/ps.Two different combinations of materials are demonstrated for dispersion flattening of the proposed waveguide structures.We also provide design guidance for the proposed waveguide structures with other combinations of materials.

关 键 词：integrated optical devices WAVEGUIDES DISPERSION 

分 类 号：TN252[电子电信—物理电子学]