Low-insertion-loss femtosecond laser-inscribed three-dimensional high-density mux/demux devices  

作　　者：Yize Liang Chengkun Cai Kangrui Wang Xiaokang Lian Jue Wang Jinfeng Liu Lei Shen Jian Wang 

机构地区：[1]Huazhong University of Science and Technology,Wuhan National Laboratory for Optoelectronics and School of Optical and Electronic Information,Wuhan,China [2]Optics Valley Laboratory,Wuhan,China [3]Shenzhen Institute of Huazhong University of Science and Technology,Shenzhen,China [4]Yangtze Optical Fiber and Cable Joint Stock Limited Company(YOFC),State Key Laboratory of Optical Fiber and Cable Manufacture Technology,Wuhan,China

出　　处：《Advanced Photonics Nexus》2023年第3期8-15,共8页先进光子学通讯（英文）

基　　金：supported by the National Natural Science Foundation of China(Grant Nos.62125503 and 62261160388);the Key R&D Program of Hubei Province of China(Grant Nos.2020BAB001 and 2021BAA024);the Key R&D Program of Guangdong Province(Grant No.2018B030325002);the Science and Technology Innovation Commission of Shenzhen(Grant No.JCYJ20200109114018750);the Open Projects Foundation(No.SKLD2201)of State Key Laboratory of Optical Fiber and Cable Manufacture Technology(YOFC);the Innovation Project of Optics Valley Laboratory(Grant No.OVL2021BG004).

摘　　要：Recently,transmitting diverse signals in different cores of a multicore fiber(MCF)has greatly improved the communication capacity of a single fiber.In such an MCF-based communication system,mux/demux devices with broad bandwidth are of great significance.In this work,we design and fabricate a 19-channel mux/demux device based on femtosecond laser direct writing.The fabricated mux/demux device possesses an average insertion loss of 0.88 dB and intercore crosstalk of no more than−29.1 dB.Moreover,the fabricated mux/demux device features a broad bandwidth across the C+L band.Such a mux/demux device enables low-loss 19-core fiber(de)multiplexing over the whole C+L band,showing a convincing potential value in wavelength-space division multiplexing applications.In addition,a 19-core fiber fan-in/fan-out system is also established based on a pair of mux/demux devices in this work.

关 键 词：femtosecond laser direct writing space-division multiplexing mux/demux device multicore fiber 

分 类 号：TN2[电子电信—物理电子学]