Gain-assisted chiral soliton microcombs

Nonreciprocal optical solitons in a spinning Kerr resonator

“…Here we propose a novel mechanism to generate nonreciprocal dissipative Kerr solitons, which may enable various oneway devices such as pulse routers [20] or chiral combs [21]. We note that nonreciprocal devices, allowing one-way flow of information and thus playing key roles in backaction-immune communication and invisible sensing, have been achieved in nonlinear systems [22][23][24][25][26][27][28][29][30][31], temporal devices [32][33][34], non-Hermitian systems [35][36][37], and spinning resonators [38,39].…”

“…2(d-f). This unidirectional control of solitons can be used to build, e.g., soliton diodes, circulators, switches or nonreciprocal soliton lasers [20,21,49] and can lead to practical applications in one-way soliton engineering and soliton-based communication [2,50].…”