Self-induced light trapping in nonlinear Fabry–Perot resonators

In the framework of the coupled mode theory we consider light trapping between two off-channel resonators which serve as self-adjusted Fano mirrors due to the Kerr effect. By inserting an auxiliary nonlinear resonator between the mirrors we achieve self-tuning of phase shift between the mirrors. That allows for the light trapping for arbitrary distance between the mirrors. - Highlights: • Fabry–Perot resonator traps light in a self-induced way if nonlinear cavity is inserted between mirrors.