Super-resolution nano inscription can be achieved by tightly focusing laser pulses inside nonlinear optical materials. A thin film can be used to decrease the size of the laser beam (SR layer) by using nonlinear optical phenomena as nonlinear refraction and absorption. A second layer is employed to inscribe photonic components in three dimensions. The inscription can be carried out by local modification of the linear refractive index allowing the fabrication of waveguides or gratings. The (...)