一种超宽工作带宽的二氧化硅基可变光衰减器(特邀)  

An Ultra-Large Bandwidth Variable Optical Attenuator Based on Silica Platform(Invited)

作　　者：曾国宴 尹悦鑫 丁颖智 孙小强[1] 张大明[1] Zeng Guoyan;Yin Yuexin;Ding Yingzhi;Sun Xiaoqiang;Zhang Daming(State Key Laboratory of Integrated Optoelectronics,College of Electronic Science&Engineering,Jilin University,Changchun 130012,Jilin,China)

机构地区：[1]吉林大学电子科学与工程学院集成光电子学国家重点实验室,吉林长春130012

出　　处：《激光与光电子学进展》2024年第19期179-185,共7页Laser & Optoelectronics Progress

基　　金：国家重点研发计划(2021YFB2800202)。

摘　　要：提出一种具有超宽工作带宽的二氧化硅基可变光衰减器。该可变光衰减器采用马赫-曾德尔干涉仪结构,其中分路器/合路器使用具有超宽工作带宽的贝塞尔形多模干涉器。制备的可变光衰减器可以工作在O+E+S+C+L波段(1260~1625 nm)的365 nm光谱范围内,包括耦合损耗在内,插入损耗小于10.94 dB,消光比大于8.06 dB,不同状态下最高功耗小于452.1 mW。该器件在1310 nm处上升和下降时间分别为0.84 ms和0.88 ms,在1550 nm处上升和下降时间分别为0.72 ms和1.04 ms。该器件在光通信领域有着良好的应用前景。In this study,a variable optical attenuator for multi-band use based on silica platform is demonstrated.The device is based on the Mach-Zehnder interferometer(MZI)structure with two Bessel curve multi-mode interferometers(MMIs).The variable optical attenuators are prepared to operate in the O+E+S+C+L band(1260‒1625 nm)and spectral range of 365 nm.The insertion loss is lower than 10.94 dB with an extinction ratio larger than 8.06 dB.The maximum power consumption of these states is lower than 452.1 mW.At the wavelength of 1310 nm,the rise and fall time of the optical signal are 0.84 ms and 0.88 ms,respectively.Meanwhile,at the wavelength of 1550 nm,the rise and fall time of the optical signal are 0.72 ms and 1.04 ms,respectively.The device has good application prospects in the field of optical communication.

关 键 词：可变光衰减器 贝塞尔曲线 多模干涉器 二氧化硅 

分 类 号：TN256[电子电信—物理电子学]