摘要
This article introduces a method of achieving high polarization extinction ratio using a subwavelength grating structure on a lithium niobate thin film platform,and the chip is formed on the surface of the lithium niobate thin film.The chip,with a length of just 20μm,achieved a measured polarization extinction ratio of 29 dB at 1550 nm wavelength.This progress not only proves the possibility of achieving a high extinction ratio on a lithium niobate thin film platform,but also offers important technical references for future work on polarization beam splitters,integrated fiber optic gyroscopes,and so on.
本文介绍了一种通过在锯酸锂薄膜平台上使用亚波长光栅结构实现高偏振消光比的方法,并在锯酸锂薄膜的表面形成了芯片。该芯片的长度仅为20μm,在1.550nm波长下测得的偏振消光比为29dB。这一进展不仅证明了在锯酸锂薄膜平台上实现高偏振消光比的可能性,而且为未来在偏振分束器、集成光纤陀螺仪等方面的工作提供了重要的技术参考。
出处
《红外与毫米波学报》
CSCD
北大核心
2024年第6期827-831,共5页
Journal of Infrared and Millimeter Waves
基金
Supported by Beijing Natural Science Foundation(4242062)and the Youth Innovation Promotion Association,CAS(2021108)。
作者简介
YANG Yong-Kang(1994-),male,Tianshui,Ph.D student.Research area involves semiconductor laser and light source.E-mail:yky⁃ang@semi.ac.cn;Corresponding authors:GUO Wen-Tao,E-mail:wtguo@semi.ac.cn;Corresponding authors:TAN Man-Qing,mqtan@semi.ac.cn。
