Coaxial cables are being gradually replaced by fibers for the transport of data at high speed. So the fibers are preferred over medium and short distances. In the last decade, with the enormous increase of the data traffic, spectral efficiency has become a key parameter. Optical communications are replacing copper-based wire line links, due to the larger bandwidth and lower losses provided by optical fibers. A new platform here will be described: Graphene. It is similar to III-V’s in terms of the basic principles since it explain electro-absorption and electro-refraction for light modulation and absorption. A collaboration with CamGraPhIC, a startup founded as a spinoff from the University of Cambridge and located in Pisa, was born to design a ‘target’ optical transceiver with a capability of 400 Gbps, consisting of 4 electro-optical channels with a maximum frequency of 112 GBps and NRZ modulation. In particular, this work is related to the design of the modulator driver in the transceiver that will be connected to a graphene modulator and photodetector.
Coaxial cables are being gradually replaced by fibers for the transport of data at high speed. So the fibers are preferred over medium and short distances. In the last decade, with the enormous increase of the data traffic, spectral efficiency has become a key parameter. Optical communications are replacing copper-based wire line links, due to the larger bandwidth and lower losses provided by optical fibers. A new platform here will be described: Graphene. It is similar to III-V’s in terms of the basic principles since it explain electro-absorption and electro-refraction for light modulation and absorption. A collaboration with CamGraPhIC, a startup founded as a spinoff from the University of Cambridge and located in Pisa, was born to design a ‘target’ optical transceiver with a capability of 400 Gbps, consisting of 4 electro-optical channels with a maximum frequency of 112 GBps and NRZ modulation. In particular, this work is related to the design of the modulator driver in the transceiver that will be connected to a graphene modulator and photodetector.
Distributed wideband driver design for graphene-based optical modulators
VITELLI, EMANUEL MARIA GIOVANNI
2021/2022
Abstract
Coaxial cables are being gradually replaced by fibers for the transport of data at high speed. So the fibers are preferred over medium and short distances. In the last decade, with the enormous increase of the data traffic, spectral efficiency has become a key parameter. Optical communications are replacing copper-based wire line links, due to the larger bandwidth and lower losses provided by optical fibers. A new platform here will be described: Graphene. It is similar to III-V’s in terms of the basic principles since it explain electro-absorption and electro-refraction for light modulation and absorption. A collaboration with CamGraPhIC, a startup founded as a spinoff from the University of Cambridge and located in Pisa, was born to design a ‘target’ optical transceiver with a capability of 400 Gbps, consisting of 4 electro-optical channels with a maximum frequency of 112 GBps and NRZ modulation. In particular, this work is related to the design of the modulator driver in the transceiver that will be connected to a graphene modulator and photodetector.È consentito all'utente scaricare e condividere i documenti disponibili a testo pieno in UNITESI UNIPV nel rispetto della licenza Creative Commons del tipo CC BY NC ND.
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https://hdl.handle.net/20.500.14239/14810