On-Chip Chalcogenide-Glass Nonlinear Photonics Based on 2D-Material Mode-Locked Fiber Lasers [Invited]

Chalcogenide glasses (ChGs), namely the amorphous compounds containing S, Se and/or Te, are emerging photonic materials known for their broadband transparency, high refractive indices (n≈2-3.5), large Kerr nonlinearity and low two photon absorption. Therefore, ChGs have been recognized as ideal materials for achieving high-performance nonlinear photonic devices. In particular, on-chip ChGs-based nonlinear photonics with unparalleled advantages in terms of small size, low cost, robustness and high performance have been one of the most well-studied hotspots in recent years.