Novel Design Conditions to Optimize Power Coupling in Optical Grating-Assisted Directional Couplers

  • Ho, Kwang-Chun (Department of Information and Communication, Hansung University) ;
  • Kong, Hyung-Yun (Department of Electronic Engineering, University of Ulsan)
  • Published : 2002.07.01

Abstract

By defining a power distribution ratio (PDR) and coupling efficiency (CE) amenable to the rigorous analytical solutions of newly developed rigorous modal transmission-line theory (MTLT), we explicitly analyze the power coupling characteristics of TE modes propagating in GADCs. The numerical results reveal that the incident power is optimally coupled into the desired guiding channel if the powers of rigorous modes excited at the input boundary of grating-assisted coupler are equally partitioned.

Keywords