Two-Dimensional Photonic Devices based on Bloch Surface Waves with One-Dimensional Grooves

Both experiments and simulations show that the polarization state and propagation path of the Bloch surface waves sustained on a dielectric multilayer can be manipulated with the grooves inscribed on this multilayer. These grooves can be easily producible, accessible, and controllable. Various nanodevices for the Bloch surface waves, such as the launcher, beam splitter, reflector, polarization rotator, and even the photonic single-pole double-throw switch, are all experimentally realized with the properly designed grooves, which are consistent with the numerical simulations. The proposed devices will be basic elements for the two-dimensional photonic system and will find numerous applications, including integrated photonics, molecular sensing, imaging, and micromanipulation.