A reconfigurable Si3N4 on-chip filter for programmable photonic processor

Dong Liang; Qinggui Tan; Xiaojun Li; Li Li; Yangjing Wang; Yong Liu

doi:10.1117/12.2587403

12 March 2021 A reconfigurable Si₃N₄ on-chip filter for programmable photonic processor

Dong Liang, Qinggui Tan, Xiaojun Li, Li Li, Yangjing Wang, Yong Liu

Proceedings Volume 11763, Seventh Symposium on Novel Photoelectronic Detection Technology and Applications; 1176370 (2021) https://doi.org/10.1117/12.2587403
Event: Seventh Symposium on Novel Photoelectronic Detection Technology and Application 2020, 2020, Kunming, China

Abstract

We propose and demonstrate an ultra-compact photonic integrated filter via dozens of tunable basic units (TBU) which allow one to obtain reconfigurable frequency selectivity from hundreds of MHz to several GHz. The chip has been fabricated in Si3N4 TriPleXTM technology and packaged for electrical programming, optical interfacing and testing in the lab. Each subunit can be independently configured both as an active processing subsystem as well as a pure interconnecting 2x2 device by proper programming of its internal coupling units. As a proof of concept, several signal processing configurations with increasing degrees of complexity are configured including broad and narrowband flat-top filtering, coherent channelization and I-Q mixing prior to an optical detection stage. This is an advanced demonstration of a programmable RF-Photonic processor built from the interconnection of independent processing subunits encompassing functions beyond optical filtering.

Citation Download Citation

Dong Liang, Qinggui Tan, Xiaojun Li, Li Li, Yangjing Wang, and Yong Liu "A reconfigurable Si₃N₄ on-chip filter for programmable photonic processor", Proc. SPIE 11763, Seventh Symposium on Novel Photoelectronic Detection Technology and Applications, 1176370 (12 March 2021); https://doi.org/10.1117/12.2587403

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