A5055939959- Photonic and Optical Devices
- Advanced Fiber Laser Technologies
- Advanced Fiber Optic Sensors
- Phase-change materials and chalcogenides
- Photonic Crystal and Fiber Optics
- Photorefractive and Nonlinear Optics
- Optical Network Technologies
- Photonic Crystals and Applications
- Mechanical and Optical Resonators
- Photoacoustic and Ultrasonic Imaging
- Glass properties and applications
- Semiconductor Lasers and Optical Devices
Sun Yat-sen University
2020-2025
Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou)
2024
Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai)
2024
Abstract Parametric frequency conversion based on second‐order nonlinearity ( χ (2) ) is critical in many applications. The implementation of integrated photonic platforms, particular the lithium niobate‐on‐insulator platform, has attracted considerable interest due to its low power consumption and small footprint. However, high‐efficiency on‐chip parametric remains challenging fabrication complexity. Here, efficient conversions via modal phase matching (MPM) etchless thin‐film niobate...
Chalcogenide glass (ChG) is an attractive material for highly efficient nonlinear photonics, which can cover ultrabroadband wavelength window from the near-visible to footprint infrared region. However, it remains a challenge implement highly-efficient and low-threshold optical parametric processes in chip-scale ChG devices due thermal light-induced instabilities as well high-loss factor films. Here, we develop systematic fabrication process high-performance photonic-chip-integrated devices,...
In this work, we report experimental characterizations of stimulated Brillouin scattering (SBS) in low-loss Ge <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">25</sub> Sb xmlns:xlink="http://www.w3.org/1999/xlink">10</sub> S xmlns:xlink="http://www.w3.org/1999/xlink">65</sub> (GeSbS) chalcogenide waveguides. A 7-cm-long spiral waveguide with a propagation loss as low 0.2 dB/cm and microring resonator high loaded quality factor 1.34×10 <sup...
We present the design, preparation, and performance optimization of strip waveguide in chalcogenide glass (ChG) for broadband supercontinuum (SC) generation. Ternary Ge-Sb-S systems possess large band-gap, high refractive index, strong laser damage resistance. The characterization SC source generation with 1300 nm bandwidth is experimentally demonstrated. Sensing capability device validated optical absorption β-phenylethylamine solutions near 1551 various concentrations, revealing...
Abstract High‐efficiency optical waveguide amplifiers are becoming desperately desirable in integrated photonics to provide sufficient power compensations. Various material platforms have been employed realize on‐chip date. Chalcogenide glasses (ChGs), as one of the well‐developed and promising platforms, extensively studied due excellent properties low loss high third‐order nonlinearity. However, performances their far from expectations on account intrinsic natures rare‐earth ion...
Optical resonator-based ultrasound detection plays a significant role in the modern ultrasonography. It consists of two steps including optical readout acoustic wave signal and electrical demodulation response. In this article, we conduct innovative researches on both them for improved performance. High quality-factor (Q-factor) chalcogenide glass (ChG) microdisk microring resonators as configurations are designed fabricated. High-precision digital frequency comb (DOFC) technique is proposed...
On-chip waveguide-integrated suspended microcavity resonator as a good sensing element is constantly pursued combining with the advantages of an optical material to enhance device performance. In this work, low-loss Ge11.5As24Se64.5 microdisk resonators have been successfully demonstrated using optimized etching recipe. The realization propagation loss down 0.48 dB/cm verifies characteristic chalcogenide glass rectangular waveguide. An loaded quality factor 1.1 × 10 <sup...
Abstract Brillouin scattering provides a unique approach in diverse applications ranging from sensing to signal processing and beyond. The recent advancement research has been driven by the development of integrated photonic platforms. However, realization efficient with substantial gains at low pump powers within compact devices is still challenge. Here, chalcogenide metasurface proposed demonstrated as promising candidate for facilitating spontaneous scattering. By employing Ge 25 Sb 10 S...
As a promising infrared optical material, the physical characteristics of patterned chalcogenide glass (ChG) membranes are great importance for improvement device performances. In this work, based on suspended membrane configuration, we have demonstrated mechanical and thermal characterizations Ge11.5As24Se64.5 ChG microdisk resonator. By approximation cantilever out-of-plane minimum strength was measured to be 150 MPa by exploiting atom force microscope (AFM). This value is two orders...
We experimentally demonstrate Ge-As-S resonators with intrinsic quality factor more than 1 million through a thermal annealing process (TAP). Preliminary result of optical parametric amplifier (OPA) in the ChG-based can be observed.
We demonstrated an integrated environment friendly chalcogenide glasses (ChG)-microresonator with a loaded Q -factor of ~0.4 million. Kerr combs in the ChG-based resonators were firstly observed.
Chalcogenide glasses (ChGs) have been widely used in integrated photonics due to their excellent properties of low loss and high nonlinearity. However, the performance active waveguide amplifiers is merely adequate. Here, a hybrid amplifier Ge25Sb10S65 planar by highly erbium-doped Al2O3 layer demonstrated. High-quality Er <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3+</sup> : Al <inf xmlns:xlink="http://www.w3.org/1999/xlink">2</inf> O...
We have demonstrated a waveguide-integrated suspended Geii.5As24Se64.5 microdisk with intrinsic quality factor of 1*10 6 , which is the highest figure, to best our knowledge, respect reported thus far in chalcogenide resonators.
Here, we demonstrate dispersion-engineered chalcogenide glasses (ChG)-microresonator with a loaded Q-factor of ~0.5 million. Kerr combs generation is first experimentally using the ChG-based micro-resonators.
We demonstrate stimulated Brillouin scattering in Ge 25 Sb 10 S 65 chalcogenide waveguides. The measured shift is 7.443 GHz. A 17.6-dB on-off gain obtained at 200-mW coupled pump power, corresponding to a Brillouin-gain coefficient of 338 m −1 W .
The Brillouin gain characteristics were demonstrated in two low-loss chalcogenide waveguides. Compared with the coefficient of 202 m −1 W As-S spiral waveguide, performance Ge-As-S counterpart was measured to be 118 .