Materials Science. Non-Equilibrium Phase Transformations.
Vol. 10 (2024), Issue 1, pg(s) 3-5

Increasing Bitrate Speed Using Artificial Intelligence in WDM C-Band Systems Based on Silicon Nitride Waveguide Structures

  • 1 Faculty of Engineering, Holon Institute of Technology (HIT), Holon, Israel

Abstract

Back reflection challenges significantly constrain the efficiency of optical communication networks utilizing dense wavelength division multiplexing (DWDM) technology based on silicon multimode interference (MMI) waveguides. To address this issue, we propose an innovative 1×4 optical demultiplexer design based on MMI within a silicon-nitride (SiN) strip waveguide configuration that operates within the C-band spectrum. Our simulation outcomes indicate that the proposed device efficiently transmits four channels with 10 nm spacing in the C-band, exhibiting low power loss ranging from 1.99-2.36 dB, extensive bandwidth of 7.69-8.09 nm, and good crosstalk values between 20.7-23.5 dB. Utilizing the low refractive index of SiN, we achieve exceptionally low back reflection of 40.58 dB without requiring specialized angled MMI designs, typically needed in Si MMI technology. Hence, this SiN-based MMI demultiplexer technology can be effectively employed in DWDM systems to achieve high data transfer rates with minimal back reflection in optical communication systems

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