TY - JOUR
T1 - Polarization-insensitive reverse-ridge AlGaAs waveguide for the mid-infrared supercontinuum generation
AU - Zhang, Luqi
AU - Yuan, Jinhui
AU - Cheng, Yujun
AU - Mei, Chao
AU - Lai, Jintao
AU - Zhou, Xian
AU - Wu, Qiang
AU - Yan, Binbin
AU - Wang, Kuiru
AU - Yu, Chongxiu
AU - Sang, Xinzhu
N1 - Funding Information:
This work was supported by the National Natural Science Foundation of China ( 61875238 ).
PY - 2022/1/1
Y1 - 2022/1/1
N2 - In this paper, a polarization-insensitive reverse-ridge AlGaAs waveguide is designed for the supercontinuum generation. In the considered wavelength range from 3.4 to 8
μ
m, the dispersion profiles, nonlinear coefficients, and effective mode field areas for the quasi-TE and quasi-TM modes coincide well. The simulation results show that when pump pulse with wavelength of 4.2
μ
m, peak power of 4.8 kW, and width of 90 fs is launched into the anomalous dispersion region of the quasi-TE and quasi-TM modes of the 3.4-mm-long waveguide, the two generated SCs overlap well. For the quasi-TE and quasi-TM modes, the SCs generated extend from 2.17 to 8.53
μ
m and 2.23 to 8.61
μ
m, respectively, spanning more than 1.95 octaves. The proposed reverse-ridge AlGaAs waveguide structure is expected to provide a possible solution for alleviating the undesired polarization effect related to the nonlinear dynamics.
AB - In this paper, a polarization-insensitive reverse-ridge AlGaAs waveguide is designed for the supercontinuum generation. In the considered wavelength range from 3.4 to 8
μ
m, the dispersion profiles, nonlinear coefficients, and effective mode field areas for the quasi-TE and quasi-TM modes coincide well. The simulation results show that when pump pulse with wavelength of 4.2
μ
m, peak power of 4.8 kW, and width of 90 fs is launched into the anomalous dispersion region of the quasi-TE and quasi-TM modes of the 3.4-mm-long waveguide, the two generated SCs overlap well. For the quasi-TE and quasi-TM modes, the SCs generated extend from 2.17 to 8.53
μ
m and 2.23 to 8.61
μ
m, respectively, spanning more than 1.95 octaves. The proposed reverse-ridge AlGaAs waveguide structure is expected to provide a possible solution for alleviating the undesired polarization effect related to the nonlinear dynamics.
KW - Reverse-ridge AlGaAs waveguide
KW - Polarization insensitivity
KW - Supercontinuum generation
UR - http://www.scopus.com/inward/record.url?scp=85114128208&partnerID=8YFLogxK
U2 - 10.1016/j.optcom.2021.127407
DO - 10.1016/j.optcom.2021.127407
M3 - Article
VL - 502
JO - Optics Communications
JF - Optics Communications
SN - 0030-4018
M1 - 127407
ER -