Reconfigurable non-Hermitian soliton combs using dissipative couplings and topological windings

The emergence of dissipative Kerr solitons in nonlinear resonators has revolutionized the generation of on-chip coherent optical frequency combs. The formation of dissipative Kerr solitons in conventional single resonators hinges on balancing the resonator dissipation against the parametric gain and balancing the resonator dispersion against the resonance frequency shifts introduced by the Kerr nonlinearity. Here, we theoretically introduce a new class of non-Hermitian soliton combs that are enabled by engineering the dissipation and dispersion of a coupled resonator array with nonreciprocal couplings. We show that these non-Hermitian soliton combs allow unprecedented postfabrication agile reconfigurability of the soliton comb spectrum, where the number of comb lines, as well as their frequency spacing, can be markedly tuned by simply tuning the hopping phases between resonators. Such reconfigurable non-Hermitian combs generated using coupled resonator arrays could enable new functional..., , , # Reconfigurable non-Hermitian soliton combs using dissipative couplings and topological windings

Dataset DOI: [10.5061/dryad.np5hqc03z](10.5061/dryad.np5hqc03z)

## Description of the data and file structure

Unlike traditional single-resonator systems, a new class of reconfigurable non-Hermitian soliton combs allows flexible tuning of comb line number and spacing by adjusting hopping phases, offering enhanced postfabrication control and broad application potential.

Raw data for figure panels in Figs 2, 3, and 4 of the main text of the manuscript. 

### Files and variables

**Files and variables**

**File: 2_b.txt**

Description: Linear Pump Absorption Spectrum

Variables:

* X-Axis: Pump Frequency (in Normalized J units)

- Y-Axis: Absorption (dB)

**File: 2_c.txt**

Description: Generated Comb Power

Variables:

* X-Axis: Pump Frequency (in Normalized J units)

- Y-Axis: Comb Power (dB)

**File: 2_d_up.txt**

Description: Spatial Intensity distribution in the lattice

Variables:

...,