Hai Yan The Univ. of Texas at Austin (United States) Xiaochuan Xu Omega Optics, Inc. (United States) Chi-Jui Chung The Univ. of Texas at Austin (United States) Harish Subbaraman Omega Optics, Inc. (United States) Zeyu Pan The Univ. of Texas at Austin (United States) Swapnajit Chakravarty Omega Optics, Inc. (United States) Ray T. Chen The Univ. of Texas at Austin (United States)
A one-dimensional (1D) photonic crystal (PC) slot waveguide was proposed and experimentally demonstrated for integrated silicon-organic hybrid modulators. The 1D PC slot waveguide consists of a conventional silicon slot waveguide with periodic rectangular teeth on its two rails. This structure takes advantage of large mode overlap in a conventional slot waveguide and the slow light enhancement from the PC structure. Its simple geometry makes it resistant to fabrication imperfections and helps reduce the propagation loss. The observed effective EO coefficient in an actual Mach-Zehnder interferometer modulator is as high as 490 pm/V owing to slow light effect.