红外与毫米波学报2021，Vol.40Issue(4)：508-515,8.DOI:10.11972/j.issn.1001-9014.2021.04.010
基于色散调制硒化锌脊形波导产生超连续谱
Dispersion engineered ZnSe rib waveguide for mid-infrared supercontinuum generation
摘要
Abstract
Mid-infrared supercontinuum generation in dispersion-engineered ZnSe rib waveguides was investigat?ed for the first time. Numerical results showed that the zero-dispersion wavelength can be shifted to a shorter wavelength by adjusting structural parameters and refractive index contrast between the core and cladding layers in the waveguide. The optical field can be well confined in the 4- and 8-μm wide waveguides with a 2-μm thick cladding layer of Ge5As10S85 glass. The effect of waveguide parameters on the bandwidth of the supercontinuum spectrum at a 5-cm-long waveguide was also simulated to understand the effect of the pump wavelength and struc?ture parameters on the supercontinuum generation. Our results showed that supercontinuum output could vary over a wide range depending on structural parameters of the waveguide,the pump power and wavelength. An ul?trabroad supercontinuum spectrum from 3. 0 up to 12. 2 μm(>2 octaves)was confirmed in a 4 μm-width wave?guide with a peak pump power of 20 kW and a pump wavelength of 4. 5 μm,which is promising as one of the on chip supercontinuum light sources for many applications such as biomedical imaging,and environmental and in?dustrial sensing in the mid-infrared.关键词
ZnSe脊波导/超连续谱/孤子自频移/色散调制Key words
ZnSe rib waveguides/supercontinuum/soliton self-frequency/dispersion-engineered引用本文复制引用
方依明,杨振,徐培鹏,严昆仑,盛燕,王荣平..基于色散调制硒化锌脊形波导产生超连续谱[J].红外与毫米波学报,2021,40(4):508-515,8.基金项目
Supported by National Key R&D Program of China(2020YFB1805900),State Key Laboratory of Silicate Materials for Architectures(Wu-han University of Technology SYSJJ2019-09),National Natural Science Foundation of China(61775109),3315 Innovation Team in Ningbo,K.C.Wong Magna 251 Fund in Ningbo University. （2020YFB1805900）
