报告题目： Material-Inspired High-Speed Modulators for Fiber Telecommunications Technology

报 告 人： Shiyoshi Yokoyama

报告人单位： Kyushu University

报告人简介： Shiyoshi Yokoyama is a professor in the Institute of Materials Chemistry and Engineering (IMCE) at Kyushu University. He studied at the Tokyo Institute of Technology and received a Doctor of Engineering in 1994. His main research interests are in the development of nonlinear-optical materials and optical devices. After receiving his degree, he moved to the National Institute for Information and Communications Technology (NICT), where he started research on polymer photonics for optical fiber communications. In 2007, he moved to IMCE as a professor, where he focuses on the challenges for the electro-optic waveguide devices using efficient polymers and crystals. Given his collaborations with industry and targeted photonics materials work, he has received research grants from NEDO, JST, and JSPS over the years.

报告摘要：There has been a significant rise in data traffic, attributed to the growing interest in bandwidth-intensive applications such as high-resolution streaming media, B5G, cloud-based service delivery, and the Internet of Things, impacting optical communication networks. Observing the recent progress in highly efficient modulator technology, it becomes evident that the advancements in efficient EO materials and their thin-film waveguide structures have been a focal point of intensive research in the fields of microwave photonics and optical networks. The heterogeneous integration of strong EO coefficient materials such as ferroelectric epitaxial films is the alternative technique. We have previously prepared the PMZT Mach-Zehnder interferometer (MZI) waveguide modulator, and measured reff of 200 pm/V and V·L as the half-wave voltage length product of 0.88 V·cm at the wavelength of 1550 nm. We continue further investigations to optimize the preparation of the thin-film crystal on insulator substrate and waveguide modulator. In this study, we achieve the improved performance of the high-speed signaling at line rates of 200 Gbit/s OOK and 364 Gbit/s PAM4.

主 持 人： 王希斌 教授

报告时间： 2026年5月13日 9:00

报告地点： 黄大年茶思屋，海容广场B座26层

主办单位： 吉林大学 电子科学与工程学院

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