High-responsivity graphene photodetectors integrated on silicon microring resonators

S. Schuler, J. E. Muench, A. Ruocco, O. Balci, D. van Thourhout, V. Sorianello, M. Romagnoli, K. Watanabe, T. Taniguchi, I. Goykhman, A. C. Ferrari () and T. Mueller ()
Additional contact information
S. Schuler: Vienna University of Technology, Institute of Photonics
J. E. Muench: University of Cambridge
A. Ruocco: University of Cambridge
O. Balci: University of Cambridge
D. van Thourhout: Ghent University-IMEC, Photonics Research Group
V. Sorianello: Consorzio Nazionale per le Telecomunicazioni and Inphotec
M. Romagnoli: Consorzio Nazionale per le Telecomunicazioni and Inphotec
K. Watanabe: National Institute for Materials Science
T. Taniguchi: National Institute for Materials Science
I. Goykhman: University of Cambridge
A. C. Ferrari: University of Cambridge
T. Mueller: Vienna University of Technology, Institute of Photonics

Nature Communications, 2021, vol. 12, issue 1, 1-9

Abstract: Abstract Graphene integrated photonics provides several advantages over conventional Si photonics. Single layer graphene (SLG) enables fast, broadband, and energy-efficient electro-optic modulators, optical switches and photodetectors (GPDs), and is compatible with any optical waveguide. The last major barrier to SLG-based optical receivers lies in the current GPDs’ low responsivity when compared to conventional PDs. Here we overcome this by integrating a photo-thermoelectric GPD with a Si microring resonator. Under critical coupling, we achieve >90% light absorption in a ~6 μm SLG channel along a Si waveguide. Cavity-enhanced light-matter interactions cause carriers in SLG to reach ~400 K for an input power ~0.6 mW, resulting in a voltage responsivity ~90 V/W, with a receiver sensitivity enabling our GPDs to operate at a 10−9 bit-error rate, on par with mature semiconductor technology, but with a natural generation of a voltage, rather than a current, thus removing the need for transimpedance amplification, with a reduction of energy-per-bit, cost, and foot-print.

Date: 2021
References: Add references at CitEc
Citations:

Downloads: (external link)
https://www.nature.com/articles/s41467-021-23436-x Abstract (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:nat:natcom:v:12:y:2021:i:1:d:10.1038_s41467-021-23436-x

Ordering information: This journal article can be ordered from
https://www.nature.com/ncomms/

DOI: 10.1038/s41467-021-23436-x

Access Statistics for this article

Nature Communications is currently edited by Nathalie Le Bot, Enda Bergin and Fiona Gillespie

More articles in Nature Communications from Nature
Bibliographic data for series maintained by Sonal Shukla () and Springer Nature Abstracting and Indexing ().