Deterioration of Graphene Nanocoated Optical Taper Saturable Absorber at High Power

We experimentally investigate the loss of nonlinear transmission of graphene nanocoated optical taper (GNOT) saturable absorber at high input average power. Above a certain threshold of incident average power, the component experiences an irreversible modification of its nonlinear properties. This leads to a permanent deterioration of saturable absorption characteristics of this component. Such behavior is discussed and analyzed.