Open AccessChirp management in silicon-graphene electro absorption modulators
Author(s) -
Vito Sorianello,
G. Contestabile,
M. Midrio,
Marianna Pantouvaki,
I. Asselbergs,
Joris Van Campenhout,
C. Huyghebaerts,
A. D’Errico,
P. Galli,
M. Romagnoli
Publication year - 2017
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.25.019371
Subject(s) - chirp , optics , graphene , materials science , dispersion (optics) , signal (programming language) , polarization mode dispersion , single mode optical fiber , optoelectronics , optical fiber , physics , computer science , laser , programming language , nanotechnology
We study the frequency chirp properties of graphene-on-silicon electro-absorption modulators (EAMs). By experimentally measuring the chirp of a 100 µm long single layer graphene EAM, we show that the optoelectronic properties of graphene induce a large positive linear chirp on the optical signal generated by the modulator, giving rise to a maximum shift of the instantaneous frequency up to 1.8 GHz. We exploit this peculiar feature for chromatic-dispersion compensation in fiber optic transmission thanks to the pulse temporal lensing effect. In particular, we show dispersion compensation in a 10Gb/s transmission experiment on standard single mode fiber with temporal focusing distance (0-dB optical-signal-to-noise ratio penalty) of 60 km, and also demonstrate 100 km transmission with a bit error rate largely lower than the conventional Reed-Solomon forward error correction threshold of 10 -3 .