High flux solar simulators have been widely used in solar thermal research due to their controllable flux intensity. Simulators based on optical-fiber transmission have recently gained further attention because of their superior flexibility. In this study, we developed a flexible, high -flux solar simulator that consists of a xenon lamp-truncated ellipsoidal mirror array, a multicomponent glass optical-fiber bundle and a secondary concentrator. The flexibility of the fibers allows the simulator to produce various flux distributions in 2D and 3D space through corresponding optical-fiber bundle arrangements. Each bundle has a diameter of 10 mm and contains 30,000 optical fibers that can transmit the high flux of a xenon lamp to a target. The density of the spot can reach 500 kW/m(2). The intensity of the flux produced is determined by the power of the lamps, and the transmission properties and temperature resistance of the fiber bundle.