Silicon Photonics Modulators and Photodetectors for Next-Generation CPO and Optical I/O

Van Campenhout, Joris; Kim, M.; Coughlan, Conor; Shahin, Amir; Ahmad, Zohauddin; Bruynsteen, Cedric; da Silva, Leandro; Singh, Nishant; Malik, Dharmander; Muliuk, Grigorij; Yudistira, Didit; Vaskasi, J. R.; Jakanadan, Shalini; Lepage, Guy; Marchese, Chiara; Kaushik, Shuchi; Loo, Roger; Shimura, Yosuke; Kobbi, Hakim; Magdziak, Rafal

doi:10.1109/iedm50572.2025.11353833

Publication:

Silicon Photonics Modulators and Photodetectors for Next-Generation CPO and Optical I/O

Date

2025

Proceedings Paper

https://doi.org/10.1109/iedm50572.2025.11353833

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Journal

2025 IEEE INTERNATIONAL ELECTRON DEVICES MEETING, IEDM

Abstract

We review the recent performance of high-speed, high-efficiency electro-optical modulators and photo-detectors, targeting next-generation co-packaged optics (CPO) operating at 400G/lane and future Optical I/O (OIO), employing a "wide-and-slow" parallel interface. We focus on compact devices, including Si ring and disk modulators, as well as electro-absorption modulators implemented in Ge(Si) or through heterogeneous InP-on-Si integration. Finally, we provide a performance overview of recently developed Si-integrated Ge photodetectors, capable of supporting both next-generation CPO and Optical I/O.