Optical waveguides based upon a gauge field
Alberucci A, Jisha CP, Nolte S (2021)
Publication Type: Conference contribution
Publication year: 2021
Publisher: Institute of Electrical and Electronics Engineers Inc.
Conference Proceedings Title: 2021 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2021
Event location: Munich, DEU
ISBN: 9781665418768
DOI: 10.1109/CLEO/Europe-EQEC52157.2021.9542551
Abstract
Photons are neutral particles, thus they are not affected by magnetic fields. Nonetheless, light propagation under the action of an effective magnetic field has been demonstrated [1] , [2]. This counter-intuitive result can be grasped by thinking in terms of gauge fields, that is, a point-wise change of the framework. Synthetic magnetic fields have been generated by introducing phase shifts in coupled resonators [1] or by longitudinal modulation of arrays of coupled waveguides [2]. Intuitively, an inhomogeneous gauge field can induce a transverse gradient in the optical phase such that it compensates the spreading by diffraction, eventually forming an optical waveguide. As a matter of fact, in discrete systems this type of light trapping has been first theoretically predicted in coupled resonators [3] , and very recently experimentally demonstrated in femtosecond-written waveguides [4]. Here, we propose a new method to realize gauge-based continuous waveguides using a longitudinally periodic modulation of the refractive index [5] featuring a point-wise shift; specifically, the phase of the periodic modulation varies along the cross-section of the waveguide and represents the gauge field in our proposal.
Involved external institutions
Germany (DE)How to cite
APA:
Alberucci, A., Jisha, C.P., & Nolte, S. (2021). Optical waveguides based upon a gauge field. In 2021 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2021. Munich, DEU: Institute of Electrical and Electronics Engineers Inc..
MLA:
Alberucci, Alessandro, Chandroth P. Jisha, and Stefan Nolte. "Optical waveguides based upon a gauge field." Proceedings of the 2021 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2021, Munich, DEU Institute of Electrical and Electronics Engineers Inc., 2021.
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