a School of Physics and Information Technology, Shaanxi Normal University, Xi’an 710000, Shaanxi,
China.
b School of Electronic Engineering, Guangxi University of Science and Technology, Liuzhou
545006, Guangxi, China.
c School of Computer Science and Engineering, Macau University of Science and
Technology, Taipa 999078, Macau, China.
d State Key Laboratory of Transient Optics and Photonics, Xi’an
Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi’an 710119, Shaanxi, China.
Funds:
This research was supported by the Starting Grants of Shaanxi Normal University (grant nos. 1112010209 and 1110010717), Fundamental Research Funds for the Central
Universities (no. GK202103013 and 2021CSLY005), and funded projects for the Academic Leader and Academic Backbones, Shaanxi Normal University (no. 18QNGG006)
Manganese dioxide (MnO2) is a widely used and well-studied 3-dimensional (3D) transition metal oxide,
which has advantages in ultrafast optics due to large specific surface area, narrow bandgap, multiple
pores, superior electron transfer capability, and a wide range of light absorption. However, few studies have
considered its excellent performance in ultrafast photonics. γ-MnO2 photonics devices were fabricated
based on a special dual-core, pair-hole fiber (DCPHF) carrier and applied in ultrafast optics fields for the
first time. The results show that the soliton molecule with tunable temporal separation (1.84 to 2.7 ps) and
600-MHz harmonic solitons are achieved in the experiment. The result proves that this kind of photonics
device has good applications in ultrafast lasers, high-performance sensors, fiber optical communications,
etc., which can help expand the prospect of combining 3D materials with novel fiber for ultrafast optics
device technology.
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