ArticleMaterials (Basel, Switzerland)2022
1 × 4 Wavelength Demultiplexer C-Band Using Cascaded Multimode Interference on SiN Buried Waveguide Structure.
Article in Materials (Basel, Switzerland), 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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3 citing papers in PubMed, 29 citations in OpenAlex.
- O-Band 4 × 1 Combiner Based on Silicon MMI Cascaded Tree Configuration.Micromachines · 2025Article
- Data Center Four-Channel Multimode Interference Multiplexer Using Silicon Nitride Technology.Nanomaterials (Basel, Switzerland) · 2024Article
- An Optical 1×4 Power Splitter Based on Silicon-Nitride MMI Using Strip Waveguide Structures.Nanomaterials (Basel, Switzerland) · 2023Article
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Authors and funding
2 authors at 1 institution in 1 country.
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Abstract
Back reflection losses are a key problem that limits the performances of optical communication systems that work on wavelength division multiplexing (WDM) technology based on silicon (Si) Multimode Interference (MMI) waveguides. In order to overcome this problem, we propose a novel design for a 1 × 4 optical demultiplexer based on the MMI in silicon nitride (SiN) buried waveguide structure that operates at the C-band spectrum. The simulation results show that the proposed device can transmit four channels with a 10 nm spacing between them that work in the C-band with a low power loss range of 1.98-2.35 dB, large bandwidth of 7.68-8.08 nm, and good crosstalk of 20.9-23.6 dB. Thanks to the low refractive index of SiN, a very low back reflection of 40.57 dB is obtained without using a special angled MMI design, which is usually required, using Si MMI technology. Thus, this SiN demultiplexer MMI technology can be used in WDM technique for obtaining a high data bitrate alongside a low back reflection in optical communication systems.
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