Silicon Multi-Band On-Chip Mode-Division (De)Multiplexing for High-Speed Optical Interconnect in Both EDFA and TDFA Wavebands

We propose and demonstrate a four-mode division (de)multiplexer capable of operating in two distinct wavebands centered at 1550 nm and 1970 nm. The phase matching condition can be established across multiple wavebands in the asymmetric directional couplers. The 2 μm light can be coupled back and for...

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Bibliographic Details
Published in:Journal of lightwave technology 2024-12, Vol.42 (24), p.8840-8845
Main Authors: Yi, Qiyuan, Yan, Zhiwei, Xing, Sizhe, Cheng, Guanglian, Sun, Aolong, Deng, Xuyu, Zheng, Shuang, Zhang, Junwen, Chi, Nan, Shen, Li
Format: Article
Language:English
Subjects:
Couplings
Mode division (de)multiplexer
multi-wavebands
Multiplexing
Optical device fabrication
Optical interconnections
optical transmission
Optical waveguides
Silicon
System-on-chip
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Summary:We propose and demonstrate a four-mode division (de)multiplexer capable of operating in two distinct wavebands centered at 1550 nm and 1970 nm. The phase matching condition can be established across multiple wavebands in the asymmetric directional couplers. The 2 μm light can be coupled back and forth multiple times with a total coupling length that equals the minimum coupling length of the 1.55 μm light, and the structure could be scaled to more mode channels. As a proof of concept, the fabricated dual-band four-mode (TE 0 -TE 3 ) device exhibits low insertion losses and crosstalk
ISSN:0733-8724
1558-2213
DOI:10.1109/JLT.2024.3436069