Picture of Paolo Carniello

Dott. Mag. Paolo Carniello

Technical University of Munich

Associate Professorship of Line Transmission Technology (Prof. Hanik)

Postal address

Theresienstr. 90
80333 München


  • B.Sc. in Electronics Engineering (2016-2019), Università degli Studi di Udine
  • M.Sc. in Telecommunications Engineering (2019-2021), Politecnico di Torino
  • Research assistant at the group Line Transmission Technology (LÜT) of Prof. Dr.-Ing. Norbert Hanik (2022 - today), Technische Universität München 


Available Theses

Nonlinear Effects in Multi-Core Fibers

nonlinearity, optical communications, mcf, multicore fibers


Space-division multiplexing (SDM), which consists in exploiting multimode fibers (MMFs) or multicore fibers (MCFs) instead of single mode ones, is one of the future optical communications architectures to increase data rates and network planning flexibility. The nonlinear properties of MCFs are of primary interest in assessing the usefulness of SDM against the current network. With this thesis, the student has the chance to work on a state-of-the-art topic in the field of optical communication systems, and progress quickly thanks to a tight (if desired) supervision. Would you be curious to know more about it? If so, just get in touch with me at paolo.carniello@tum.de (personal page https://www.ce.cit.tum.de/lnt/mitarbeiter/doktoranden/carniello/).


-some knowledge on optical communications systems (e.g., Optical Communication Systems or Simulation of Optical Communication Systems Lab)

-some knowledge about communications engineering topics


See https://www.ce.cit.tum.de/lnt/mitarbeiter/doktoranden/carniello/ for more info on the supervisor.


Strong Coupling Multimode Fibers

Multimode fibers, Space-division multiplexing


Space-division multiplexing (SDM), which consists in exploiting multimode (MMF) or multicore fibers instead of single mode ones, is one of the future architectures to increase data rates and network planning flexibility. A desired working condition for SDM is the so called strong-coupling linear regime, which is however not intrinsically achievable in common MMFs. With this topic, the student has the chance to investigate if it would be achievable with some new design. If you are curious about it, just send a mail to paolo.carniello@tum.de.


Basics of Optical Communication Systems (see https://www.ce.cit.tum.de/en/lnt/teaching/lectures/optical-communication-systems/)




Hollow Core Fibers for Optical Communication Systems

Optical Communications, Fibers


In order to increase the capacity of the current optical networks, new transmission architectures are under investigation. Hollow-core fibers are a new technology, which promises, among the others, to have reduced losses and extremely low nonlinear effects. New propagation impairments, which are still under study, would arise compared to the well-known single-mode fibers (SMFs). Yet, their employment in the field of optical communications seems likely to bring about a breakthrough over the current SMF-based solutions.

The student is required to compare ste system-level benefits of hollow-core fiber based systems against wideband frequency-division multiplexing (FDM) systems based on SMFs (or also on multi-core fibers), highlighting the most likely application scenarios, see [1]. 

A further elective task is to provide an overview on the design and modeling of hollow-core fibers, see [2].



[1] E. N. Fokua et al., ``Loss in hollow-core optical fibers: mechanisms, scaling rules, and limits'', 2023

[2] P. Poggiolini, F. Poletti, ``Opportunities and Challenges for Long-Distance Transmission in Hollow-Core Fibres'', 2022


Bases in optical communication systems and, possibly, in guided mode propagation.


Research Interests

Space-Division Multiplexing for Optical Fiber Communications

Today's commercial optical fiber network relies on single mode fibers for long-haul communications, so that only the two polarizations of the fundamental guided mode are excited through independent data streams. Space-Division Multiplexing (SDM) aims at exploiting the spatial (or modal) dimension for the transmission of information, thanks to the use of multimode fiber structures, like multimode or multicore fibers. Ideally, many of the already existing techniques for single-mode fiber transmission (like wavelength division multiplexing or high-cardinality modulation formats) can be extended to the SDM architecture. However, new linear and nonlinear impairments arise in this scenario, which need to be modeled, analyzed, and, possibly, compensated. 

My current research is focused on physical models for optical signal propagation, from the nonlinear Schrödinger equation for multimode structures, to the different flavors of Manakov equations. I am curious about simplified numerical and analytical models for the signal propagation in multimode structures, and, for future research, in possible DSP and optical compensation techniques for linear and nonlinear impairments. I am developing a simulator based on a numerical solver for system level analysis for the SDM architecture.

Finally, I am interested in understanding which multimode fiber geometries could better suit the different SDM scenarios, depending on the linear coupling regimes and on the significance of nonlinear effects.

If you would like to work together, feel free to contact me!