Polarization-insensitive reverse-ridge AlGaAs waveguide for the mid-infrared supercontinuum generation

Luqi Zhang, Jinhui Yuan*, Yujun Cheng, Chao Mei, Jintao Lai, Xian Zhou, Qiang Wu, Binbin Yan, Kuiru Wang*, Chongxiu Yu, Xinzhu Sang

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

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.
Original languageEnglish
Article number127407
Number of pages8
JournalOptics Communications
Volume502
Early online date25 Aug 2021
DOIs
Publication statusE-pub ahead of print - 25 Aug 2021

Fingerprint

Dive into the research topics of 'Polarization-insensitive reverse-ridge AlGaAs waveguide for the mid-infrared supercontinuum generation'. Together they form a unique fingerprint.

Cite this