Prof. Yang Yue
Xi'an Jiaotong University, China
Title: Non-Zero Dispersion-Shifted Ring Fiber for Orbital Angular Momentum Modes
Abstract:
Orbital angular momentum (OAM) modes, characterized by their helical phase front and annular intensity profile, are a complete set of orthogonal basis functions for spatial distribution with theoretically infinite topological states, offering an additional spatial multiplexing dimension that enables significant capacity increases for communication system. To improve the transmission distance of the communication system, a series of non-zero dispersion-shifted ring-core fibers (NZDSRF) have been proposed. By carefully engineering the dispersion characteristics, NZDSRFs can minimize signal pulse broadening.
In this talk, we will first introduce solid step-index non-zero dispersion-shifted ring-core fiber (SS-NZDSRF). The dispersion values for all modes fall within the range of 2 ps/nm/km to 14 ps/nm/km with ring radius and ring width equal to 19.5 μm and 1.5 μm respectively. Corresponding to the G.655 fiber with negative dispersion values in the C band, then we investigate hollow step-index non-zero dispersion-shifted ring-core fiber (HS-NZDSRF). It can achieve dispersion values of -1.246 ps/nm/km at 1550 nm. To pursue more low-dispersion OAM modes, we analyze solid graded-index non-zero dispersion-shifted ring-core fiber (SG-NZDSRF), which can support OAM modes from the 1st to the 15th order in the C band, with dispersion values ranging from 0 to 10 ps/nm/km. To further investigate the influence of fiber structure, we finally provide an intuitive and comprehensive comparison of the different properties of OAM modes supported in the three NZDSRF designs.
Biography:
Yang Yue received the B.S. and M.S. degrees in electrical engineering and optics from Nankai University, China, in 2004 and 2007, respectively. He received the Ph.D. degree in electrical engineering from the University of Southern California, USA, in 2012. He 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 ~300 journal papers (including Science) and conference proceedings with >12,000 citations, one book, six edited books, two book chapters, >60 issued or pending patents, >200 invited presentations (including 1 tutorial, >30 plenary and >70 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.