Abstract

We study the coherence characteristics of light propagating in nonlinear graded-index (GRIN) multimode fibers after attaining optical thermal equilibrium conditions. The role of optical temperature on the spatial mutual coherence function and the associated correlation area is systematically investigated. In this respect, we show that the coherence properties of the field at the output of a multimode nonlinear fiber can be controlled through its optical thermodynamic properties.

© 2023 Optica Publishing Group

Modal phase-locking in multimode nonlinear optical fibers

Fabio Mangini, Mario Ferraro, Yifan Sun, Mikhail Gervaziev, Pedro Parra-Rivas, Denis S. Kharenko, Vincent Couderc, and Stefan Wabnitz
Opt. Lett. 48(14) 3677-3680 (2023)

High-temperature wave thermalization spoils beam self-cleaning in nonlinear multimode GRIN fibers

Fabio Mangini, Mario Ferraro, Alessandro Tonello, Vincent Couderc, and Stefan Wabnitz
Opt. Lett. 48(18) 4741-4744 (2023)

Thermodynamic conditions governing the optical temperature and chemical potential in nonlinear highly multimoded photonic systems

Midya Parto, Fan O. Wu, Pawel S. Jung, Konstantinos Makris, and Demetrios N. Christodoulides
Opt. Lett. 44(16) 3936-3939 (2019)

Dalton’s law of partial optical thermodynamic pressures in highly multimoded nonlinear photonic systems

Huizhong Ren, Georgios G. Pyrialakos, Fan O. Wu, Nikolaos K. Efremidis, Mercedeh Khajavikhan, and Demetrios N. Christodoulides
Opt. Lett. 49(7) 1802-1805 (2024)

Spatial beam narrowing in multimode graded-index fiber amplifiers: an analytic approach

Govind P. Agrawal
Opt. Lett. 48(2) 259-262 (2023)