| Biography | |
|---|---|
 Prof. Yang Yue Xi'an Jiaotong University, China |
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| Title: Extremely Dispersive Optical Fiber for Vortex Modes | |
| Abstract: The demand on information transmission capacity is exponentially increasing, which promotes the research in high-capacity optical transmission systems. Space division multiplexing (SDM) has attracted great interest because of its potential in dramatically increasing the data capacity. The intrinsic orthogonality among OAM modes with varied l contributes to the theoretically infinite quantity of beams carrying OAM, which introduces a new degree of freedom to SDM. Chromatic dispersion (CD) is one of the key factors in optical systems, which is extensively used in time lens, microwave photonics subsystems and true time-delay beam former. This talk presents the dispersion characteristics of vortex modes supported in optical ring fibers. First, we will review the principle of vortex modes and its traditional applications. Regular ring fibers to support vortex modes will be discussed. Next, we will discuss the chromatic dispersion of vortex modes in fibers. Our recent work on novel germanium-doped (Ge-doped) silica highly dispersive coupled ring-core fiber (HD-CRF) will be introduced. With two concentric high-index rings, the proposed fiber is able to introduce large negative dispersion for vortex modes. The most dispersive wavelength and its corresponding dispersion value of the proposed CRF can be adjusted and optimized by properly selecting the fiber geometrical parameters. The OAM1,1 mode supported in the designed CRF can achieve an extremely negative chromatic dispersion (CD) as low as -86,288 ps/(nm•km) at 1535.4 nm. Furthermore, the OAM130,1 mode supported in the Schott glass CRF has a large negative chromatic dispersion of -20,271 ps/(nm•km) at 1260.4 nm. Finally, we will present potential applications of the proposed novel HD-CRF in fiber-based optical vortex systems. | |
| Biography: Yang Yue is a Professor with the School of Information and Communications Engineering, Xi'an Jiaotong University, China. Dr. Yue’s current research interest is intelligent photonics, including optical communications, optical perception, and optical chip. He has published over 240 journal papers (including Science) and conference proceedings with >10,000 citations, six edited books, two book chapters, >60 issued or pending patents, >200 invited presentations (including 1 tutorial, >30 plenary and >50 keynote talks). Dr. Yue is a Fellow of SPIE, a Senior Member of IEEE and Optica. He is an Associate Editor for IEEE Access and Frontiers in Physics, Editor Board Member for four other scientific journals, Guest Editor for >10 journal special issues. He also served as Chair or Committee Member for >100 international conferences, Reviewer for >70 prestigious journals. | |
