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Phys Rev Lett. 2003 Nov 21;91(21):213901. Epub 2003 Nov 17.

Multichannel optical add-drop processes in symmetrical waveguide-resonator systems.

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  • 1Department of Electrical and Computer Engineering and Microelectronic Research Center, University of Texas, Austin, Texas 78758, USA.


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.

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