title: Beam splitting at the output of photonic crystal waveguides with discrete surface point defects.
abstract: With the method of adding two point defects on modulated surface, novel photonic crystal (PC) waveguide-based beam splitters were presented. The modulated surface layer supports surface states, and introduced discrete point defects can serve as discrete light emitters. The finite-difference time-domain (FDTD) simulations show that the number of beams is sensitive to the distance of two point defects. By adjusting the positions of the point defects, 1-to-N beam splitters can be realized. These simple, easy-to-fabricate and controllable structures have important potential applications in integrated optical circuits.
authors.affiliation: National Key Laboratory of Tunable Laser Technology, Harbin Institute of Technology, Harbin, 150001, China.
authors.forename: Qi
authors.initials: Q
authors.lastname: Wang
authors.forename: Lanlan
authors.initials: L
authors.lastname: Zhang
authors.forename: Qi
authors.initials: Q
authors.lastname: Li