Hiring Institution
CentraleSupélec

PhD-Awarding Institutions
CentraleSupélec
Macquarie University (MQ)

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Option 1

Optical signal processing using complex spatio-temporal dynamics from multimode fiber

The increasing traffic over optical networks, as well as innovative concepts applied to telecommunications such as spatial division multiplexing, have generated a renewed interest in multimode fiber optics.
Most interestingly, the inherent optical nonlinearity in multimode fiber combined with the random linear and the deterministic nonlinear mode coupling mechanisms is at the origin of newly observed dynamics such as multimode optical solitons and mode-locking of transverse modes. These dynamics offer innovative solutions for optical signal processing including the generation of ultrafast light pulses, optical sensing, neuro-inspired optical computing.
This thesis will benefit from the expertise of both groups, respectively in nonlinear photonics and in fiber optics technology and characterization, to revisit the earlier theories and experiments of nonlinear spatio-temporal dynamics of multimode fibers and to address new issues including the observation of chaotic spatio-temporal dynamics and their use for optical signal processing and information security: self-beam cleaning suppressing light speckle, super continuum generation with increasing bandwidth, or even the generation of unconventional light transverse profiles including optical vortices.
The project will benefit from interactions with several companies in the fields of optical materials and telecommunications, and in particular with the founding partners of the Chair in Photonics at CentraleSupélec.
References:
1. Katarzyna Krupa, Alessandro Tonello, Alain Barthélémy, et al., APL Photonics 4, 110901 (2019)
2. Dong Mao, Mingkun Li, Zhiwen He, et al., APL Photonics 4, 060801 (2019)

Option 2

Spatio-temporal solitons from multimode fiber

The increasing traffic over optical networks, as well as innovative concepts applied to telecommunications such as spatial division multiplexing, have generated a renewed interest in multimode fiber optics.
Most interestingly, the inherent optical nonlinearity in multimode fiber combined with the random linear and the deterministic nonlinear mode coupling mechanisms is at the origin of newly observed dynamics such as multimode optical solitons, self-beam cleaning suppressing light speckle, and super continuum generation with increasing bandwidth.
This thesis will benefit from the expertise of both groups, respectively in nonlinear photonics and in fiber optics technology and characterization, to revisit the earlier theories and experiments of nonlinear spatio-temporal dynamics of multimode fibers and to address new issues including the transition from temporal multimode solitons to stable spatio-temporal solitons also called light bullets and the onset of dissipative solitons in multimode fiber cavity. These dynamics will offer alternative approaches and solutions to conventional optical signal processing.
The project will benefit from interactions with several companies in the fields of optical materials and telecommunications, and in particular with the founding partners of the Chair in Photonics at CentraleSupélec.
References:
1. Katarzyna Krupa, Alessandro Tonello, Alain Barthélémy, et al., APL Photonics 4, 110901 (2019)
2. Dong Mao, Mingkun Li, Zhiwen He, et al., APL Photonics 4, 060801 (2019)

Option 3

Unconventional light beam dynamics and control from multimode fiber

The increasing traffic over optical networks, as well as innovative concepts applied to telecommunications such as spatial division multiplexing, have generated a renewed interest in multimode fiber optics.
Most interestingly, the inherent optical nonlinearity in multimode fiber combined with the random linear and the deterministic nonlinear mode coupling mechanisms is at the origin of newly observed dynamics such as self-beam cleaning suppressing light speckle, the generation of unconventional light transverse profiles including optical vortices and polarization rotation. These dynamics offer possibilities for all-optical control of beam profiles.
This thesis will benefit from the expertise of both groups, respectively in nonlinear photonics and in fiber optics technology and characterization, to exploit the full potential of the multimode spatio-temporal dynamics in fiber systems for beam control and unconventional beam generation.
The project will benefit from interactions with several companies in the fields of optical materials and telecommunications, and in particular with the founding partners of the Chair in Photonics at CentraleSupélec.
References:
1. Katarzyna Krupa, Alessandro Tonello, Alain Barthélémy, et al., APL Photonics 4, 110901 (2019)
2. Dong Mao, Mingkun Li, Zhiwen He, et al., APL Photonics 4, 060801 (2019)

Marc Sciamanna
Delphine Wolfersberger
Alex Fuerbach
Mick Withford

Photonics