title: Multichannel optical add-drop processes in symmetrical waveguide-resonator systems.
abstract: Multichannel optical add-drop processes are studied in a class of symmetric waveguide-resonator systems. With insight gained from group theory, we analyze these systems and show that they can add or drop multiple wavelengths simultaneously, with 100% efficiency. A new mechanism is presented to reduce the remnant light at the dropped wavelengths in the pass-through port. High-order Butterworth filters can also be achieved in these systems. Built upon conventional or photonic-crystal based structures, these systems can be used in optical communication applications.
authors.affiliation: Department of Electrical and Computer Engineering and Microelectronic Research Center, University of Texas, Austin, Texas 78758, USA.
authors.forename: Wei
authors.initials: W
authors.lastname: Jiang
authors.forename: Ray T
authors.initials: RT
authors.lastname: Chen