Xiaopeng Xie

Aug 6, 2024 | opg.optica.org | Xiaopeng Xie |Peng Lei |Zhangyuan Chen |Mingyu Xu

Stimulated Brillouin scattering (SBS) is a nonlinear optical phenomenon mediated from the coupling of photons and phonons. It has found applications in various realms, yet the acousto-optic interaction strength remains relatively weak. Enhancing the SBS with resonant structures could be a promising solution, but this method faces strict constraints in operational bandwidth.

May 31, 2024 | opg.optica.org | Weiwei Hu |Xu Liu |Xiaopeng Xie |Chenbo Zhang

As the optical communication industry advances, metropolitan area networks (MANs) and radio access networks (RANs) are extensively deployed on a large scale, demanding energy-efficient integrated light sources and simplified digital signal processing (DSP) technologies. The emergence of thin-film lithium niobate (TFLN) has given rise to high-performance, energy-efficient on-chip modulators, making on-chip optical frequency comb (OFC) more appealing.

Apr 12, 2024 | opg.optica.org | Xiaopeng Xie |Peng Lei |Zhangyuan Chen |Mingyu Xu

Advancements in photonic integration technology have enabled the effective excitation of simulated Brillouin scattering (SBS) on a single chip, boosting Brillouin-based applications such as microwave photonic signal processing, narrow-linewidth lasers, and optical sensing. However, on-chip circuits still require large pump power and centimeter-scale waveguide length to achieve a considerable Brillouin gain, making them both power-inefficient and challenging for integration.

Mar 5, 2024 | opg.optica.org | Xiaopeng Xie |Peng Lei |Zhangyuan Chen |Mingyu Xu

The acousto-optic interaction known as stimulated Brillouin scattering (SBS) has emerged as a fundamental principle for realizing crucial components and functionalities in integrated photonics. However, the main challenge of integrating Brillouin devices is how to effectively confine both optical and acoustic waves. Apart from that, the manufacturing processes for these devices need to be compatible with standard fabrication platforms and streamlined to facilitate their large-scale integration.

Jan 31, 2024 | opg.optica.org | Xiaopeng Xie |Chenbo Zhang |Zhangyuan Chen |Jingjing Lin

Microwave signals can be generated by photodetecting the repetition frequencies of the soliton microcombs. In comparison to other methods, the dual-pumped method allows for the stable generation of the soliton microcombs even with resonators having lower Q-factors. However, introducing an additional pump laser may affect the phase noise of the generated microwave signals when using these dual-pumped soliton microcombs.