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"港城大提升薄膜鈮酸鋰調製器線性度及工作帶寬，為光子學提供方案" 

每日頭條| 6 Dec 2022

Integrated microwave photonics is an emerging interdisciplinary subject that takes advantage of optical devices and systems to perform microwave signal generation, manipulation and transmission tasks in a compact, integrated and scalable manner. At the heart of almost all microwave photonic systems sits the electro-optic (EO) modulators, which are responsible for faithfully encoding signals from the microwave to the optical domain. During this process, the modulation linearity and bandwidth are two key metrics that ultimately determine the signal fidelity and operation frequency range of the microwave photonic link. Recently, Dr. Wang’s team has designed and realized two new integrated lithium niobate modulators that offer two orders of magnitude improvement in modulation linearity and bandwidths covering the entire microwave and millimeter-wave bands (up to 300 GHz), respectively, opening new avenues for future integrated microwave photonics with applications in 6G networks, optical communications, as well as remote sensing and ranging systems.