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

Yize Liang; Chengkun Cai; Kangrui Wang; Xiaokang Lian; Jue Wang; Jinfeng Liu; Lei Shen; Jian Wang

doi:10.1117/1.APN.2.3.036002

Journals >Advanced Photonics Nexus >Volume 2 >Issue 3 >Page 036002 > Article

Advanced Photonics Nexus
Vol. 2, Issue 3, 036002 (2023)

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

Yize Liang^1,2,3,†, Chengkun Cai^1,2,3, Kangrui Wang^1,2,3, Xiaokang Lian^1,2,3..., Jue Wang^1,2,3, Jinfeng Liu^1,2,3, Lei Shen⁴ and Jian Wang^1,2,3,*|Show fewer author(s)

Author Affiliations

¹Huazhong University of Science and Technology, Wuhan National Laboratory for Optoelectronics and School of Optical and Electronic Information, Wuhan, China

²Optics Valley Laboratory, Wuhan, China

³Shenzhen Institute of Huazhong University of Science and Technology, Shenzhen, China

⁴Yangtze Optical Fiber and Cable Joint Stock Limited Company (YOFC), State Key Laboratory of Optical Fiber and Cable Manufacture Technology, Wuhan, China

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DOI: 10.1117/1.APN.2.3.036002 Cite this Article Set citation alerts

Yize Liang, Chengkun Cai, Kangrui Wang, Xiaokang Lian, Jue Wang, Jinfeng Liu, Lei Shen, Jian Wang, "Low-insertion-loss femtosecond laser-inscribed three-dimensional high-density mux/demux devices," Adv. Photon. Nexus 2, 036002 (2023) Copy Citation Text

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Abstract

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.

Keywords

femtosecond laser direct writing multicore fiber mux/demux device space-division multiplexing