247 citations · 563 across the 11 of their papers we have counts for
11 papers
Spiral Transformation for High-Resolution and Efficient Sorting of Optical Vortex Modes
Yuanhui Wen, Ioannis Chremmos, Yujie Chen +3
Mode sorting is an essential function for optical systems exploiting the orthogonality of photonic orbital angular momentum mode space. The familiar log-polar optical transformatio…
Demonstration of a genetic-algorithm-optimized cavity-based waveguide crossing
Pengfei Xu, Yanfeng Zhang, Zengkai Shao +2
A compact, single-etch silicon photonics waveguide crossing based on low quality factor cavity and optimized by a genetic algorithm is demonstrated. The device has 0.1~0.3 dB inser…
On-chip radially and azimuthally polarized vortex beam generation utilizing shallow-etched gratings
Zengkai Shao, Jiangbo Zhu, Yanfeng Zhang +2
Cylindrical vector vortex (CVV) beams, complex light fields that exhibit a vector nature and carry quantized orbital angular momentum states, have been widely investigated due to t…
Hybrid light-emitting polymer/SiNx platform for photonic integration
Zeming Fan, Zeru Wu, Yujie Chen +4
Organic semiconductors have potentials for a broad range of applications; however, it is difficult to be integrated with traditional inorganic material to meet the need of further…
Spin-orbit interaction of light induced by transverse spin angular momentum engineering
Zengkai Shao, Jiangbo Zhu, Yujie Chen +2
We report the first demonstration of a direct interaction between the extraordinary transverse spin angular momentum in evanescent waves and the intrinsic orbital angular momentum…
A Highly Adjustable Helical Beam: Design and Propagation Characteristic
Yuanhui Wen, Yujie Chen, Siyuan Yu
Light fields with extraordinary propagation behaviours such as nondiffracting and self-bending are useful in optical delivery for energy, information, and even objects. A kind of h…
Tailoring Accelerating Beams in Phase Space
Yuanhui Wen, Yujie Chen, Yanfeng Zhang +2
An appropriate design of wavefront will enable light fields propagating along arbitrary trajectories thus forming accelerating beams in free space. Previous ways of designing such…
Transport properties of photonic topological insulators based on microring resonator array
Xiaohui Jiang, Yujie Chen, Chenxuan Yin +3
An array of ring resonators specifically designed can perform as a topological insulator. We conduct simulations using both Tight-Binding Model (TBM) and Transfer Matrix Method (TM…
Generalised Hermite-Gaussian beams and mode transformations
Yi Wang, Yujie Chen, Yanfeng Zhang +2
Generalised Hermite-Gaussian modes (gHG modes), an extended notion of Hermite-Gaussian modes (HG modes), are formed by the summation of normal HG modes with a characteristic functi…
Winding light beams along elliptical helical trajectories
Yuanhui Wen, Yujie Chen, Yanfeng Zhang +2
Conventional caustic methods in real or Fourier space produced accelerating optical beams only with convex trajectories. We develop a superposition caustic method capable of windin…
GaN directional couplers for integrated quantum photonics
Yanfeng Zhang, Loyd McKnight, Erman Engin +7
Large cross-section GaN waveguides are proposed as a suitable architecture to achieve integrated quantum photonic circuits. Directional couplers with this geometry have been design…