title: Power splitters with different output power levels based on directional coupling.
abstract: The properties of a wideband photonic crystal power splitter with different output power levels based on directional coupling are investigated numerically with the finite-difference time-domain method. The effects of changing the coupling length and radius of the coupling rods between parallel waveguides on output transmissions are investigated. By further splitting power in each branch a power splitter with four output branches is proposed.
authors.affiliation: Department of Electrical Engineering, K. N. Toosi University of Technology, Tehran, Iran. afshin.ghafari@ee.kntu.ac.ir
authors.forename: Afshin
authors.initials: A
authors.lastname: Ghaffari
authors.forename: Mehrdad
authors.initials: M
authors.lastname: Djavid
authors.forename: Mohammad Sadegh
authors.initials: MS
authors.lastname: Abrishamian