Gupta, M., Kumar, A., Pitchappa, P., Tan, Y. J., Szriftgiser, P., Ducournau, G., & Singh, R. (2024). 150 Gbps THz Chipscale Topological Photonic Diplexer. Advanced Materials, 36(19). Portico. https://doi.org/10.1002/adma.202309497
Abstract:
Photonic diplexers are being widely investigated for high data transfer rates in on‐chip communication. However, dividing the available spectrum into nonoverlapping multicarrier frequency sub‐bands has remained a challenge in designing frequency‐selective time‐invariant channels. Here, an on‐chip topological diplexer is reported exhibiting terahertz frequency band filtering through Klein tunneling of topological edge modes. The silicon topological diplexer chip facilitates two high‐speed channels with quadrature amplitude modulation (QAM) over a broad bandwidth of 12.5 GHz each. These channels operate at carrier frequencies of 305 and 321.6 GHz, achieving a combined diplexer capacity of 150 Gbit s−1. To ensure minimal interference between adjacent channels, a guard band is implemented. Topologically protected edge modes suppress the frequency selective fading of the broadband signals and hold promise for diverse integrated photonic applications spanning terahertz and telecommunication realms, including the design of lossless topological multiplexers, interconnects, antennas, and modulators for the sixth to X generation (6G to XG) wireless.
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Publisher Copyright
Funding Info:
This research / project is supported by the National Research Foundation - Competitive Research Programme
Grant Reference no. : NRF-CRP23-2019-0005
This research / project is supported by the Infocomm Media Development Authority and National Research Foundation - Future Communications Research and Development Programme
Grant Reference no. : FCP-NTU-RG-2022-014
This research / project is supported by the French National Research Agency - NA
Grant Reference no. : ANR-22-PEEL-0006
This research / project is supported by the French National Research Agency - NA
Grant Reference no. : ANR-22-PEFT-0006
Description:
This is the peer reviewed version of the following article: Gupta, M., Kumar, A., Pitchappa, P., Tan, Y. J., Szriftgiser, P., Ducournau, G., & Singh, R. (2024). 150 Gbps THz Chipscale Topological Photonic Diplexer. Advanced Materials, 36(19). Portico, which has been published in final form at https://doi.org/10.1002/adma.202309497. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. This article may not be enhanced, enriched or otherwise transformed into a derivative work, without express permission from Wiley or by statutory rights under applicable legislation. Copyright notices must not be removed, obscured or modified. The article must be linked to Wiley’s version of record on Wiley Online Library and any embedding, framing or otherwise making available the article or pages thereof by third parties from platforms, services and websites other than Wiley Online Library must be prohibited.