摘要
We report on a conceptually new type of waveguide in glass by femtosecond laser direct writing,namely,photonic latticelike waveguide(PLLW).The PLLWfs core consists of well-distributed and densified tracks with a sub-micron size of 0.62μm in width.Specifically,a PLLW inscribed as hexagonal-shape input with a ring-shape output side was implemented to converse Gaussian mode to doughnut-like mode,and high conversion efficiency was obtained with a low insertion loss of 1.65 dB at 976 nm.This work provides a new freedom for design and fabrication of the refractive index profile of waveguides with sub-micron resolution and broadens the functionalities and application scenarios of femtosecond laser direct-writing waveguides in future 3D integrated photonic systems.
作者
王宇莹
钟理京
陈智
谭德志
方再金
杨弈
孙盛芝
杨旅云
邱建荣
Yuying Wang;Lijing Zhong;Zhi Chen;Dezhi Tan;Zaijin Fang;Yi Yang;Shengzhi Sun;Luyun Yang;jianrong Qiu(Ningbo Femto&Nano Laser Technology Co.,Ltd.,Ningbo 315000,China;Zhejiang Lab,Hangzhou 311100,China;Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communications,Institute of Photonics Technology,Jinan University,Guangzhou 511443,China;State Key Laboratory of Modern Optical Instrumentation,College of Optical Science and Engineering,Zhejiang University,Hangzhou 310027,China;Laboratory of Infrared Materials and Devices,The Research Institute of Advanced Technologies,Ningbo University,Ningbo 315211,China;Wuhan National Laboratory for Optoelectronics,Huazhong University of Science and Technology,Wuhan 430074,China)
基金
This work was supported by the National Key R&D Program of China(No.2021YFB2800500)
National Natural Science Foundation of China(Nos.U20A20211,51902286,61775192,61905215,51772270,62105297,and 61905093)
Zhejiang Provincial Natural Science Foundation(No.LQ22F050022)
State Key Laboratory of High Field Laser Physics,Shanghai Institute of Optics and Fine Mechanics,Chinese Academy of Sciences,and Fundamental Research Funds for the Central Universities.
