The research team, a collaboration between
IIT and CNIT, has demonstrated that it is
possible to create graphene-based detectors
and modulators with performance that
is promising and indicate that graphene
integrated photonics have the potential to
solve present limitations.
The work has yielded detectors and modulators that demonstrate top performance for
transmission and reception entirely through
graphene devices, reaching world-record
data rates for graphene devices (50 Gb/s for
an electro-absorption modulator on SOI).
Furthermore, the technology integrates at
the back end of existent platforms. This,
combined with the outstanding results for
data transfer, have generated interest from
data communications companies.
Applications for the technology include
photonics, optoelectronics and electronics.
The majority of the group’s experience is in
photonics, however. Graphene photonics
applications are showing high level performance for the huge market of data center
interconnectivity, but also for urban and
Collaboration yields success
The Graphene Flagship is a large-scale
coordinated research initiative funded by
the European Commission. Although their
labs are close by, Coletti and Romagnoli
never worked together until they both
became partners of the Flagship and
collaborations between their two work
packages, one on enabling materials and
another on wafer-scale system integration,
brought them together. Continuous free
exchange of personnel between their
labs and common meetings combined
expertise from material science (Coletti’s
lab) to device design (Romagnoli’s lab),
fabrication, testing, and packaging.
Other labs also contributed to the success
by exploring other routes that provided useful suggestions to
the CNIT-IIT work. In general, being part of a large project,
like the Graphene Flagship, permits groups to collaborate
with many partners and find the most appropriate path for
each individual project.
Reference: Vaidotas Miseikis, Federica Bianco, Jé ré my David,
Mauro Gemmi, Vittorio Pellegrini, Marco Romagnoli and Camilla Coletti.
“Deterministic patterned growth of high-mobility large-crystal graphene:
a path towards wafer scale integration.” 2D Mater. 4 (2017) 021004