Dissipative Kerr solitons in a photonic dimer on both sides of exceptional point

Abstract

Exceptional points are a ubiquitous concept widely present in driven-dissipative coupled systems described by a non-Hermitian Hamiltonian. To date, exceptional points have been extensively examined in the systems supporting only a few optical modes, thereby leaving the observation of collective (multimode) effects outside of the scope of the study. In the present paper, we analyze the role of exceptional points in nonlinear multimode photonics. Specifically, we provide insights into the complex nonlinear dynamics arising in a continuous wave-driven pair of strongly coupled microresonators. Investigating this system, we demonstrate mechanisms of dissipative Kerr soliton formation in two fundamentally different regimes separated by a line of exceptional points. Highlighting the diversity of emergent nonlinear effects, we describe the on-demand generation of single-solitons, perfect soliton crystals and bright-dark soliton pairs on either side of exceptional points.

Multi-Tone Optical Source Generation for Applications in Next-Generation Passive Optical Networks using Photonic Structures

“…The typical component used in this application is lithium niobate (LiNbO 3 ). Other methods use modulators with indium phosphide (InP) semiconductors, where the dimension reduction is considerable and the insertion loss is still high ( 5 dB ) (Komagata et al, 2021). Applying recirculating ring modulators is another technique used for optical combs generation.…”

“…An example of this is the generation of multi-carrier optical sources, filtering, amplification, and other tasks. These devices help to reduce implementation costs and concurrently optimize the required space, thereby increasing the efficiency of several activities (Van Veen, 2020;Komagata et al, 2021). One of the challenges of these networks is the design and implementation of optical sources that allow for the generation of multi-carriers without raising the cost of implementation.…”

Protected generation of dissipative Kerr solitons in supermodes of coupled optical microresonators

“…Recently, the possibility of the DKS generation in a photonic dimer (i.e., a pair of strongly coupled resonators as shown in Fig. 1A ) has been investigated both experimentally and numerically ( 27 , 28 ). DKSs can be generated in one of the hybridized dimer supermodes called antisymmetric (AS) and symmetric (S) (see Fig.…”

Soliton Microcomb on Chip Integrated Si3N4 Microresonators with Power Amplification in Erbium-Doped Optical Mono-Core Fiber

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