Bragg grating-assisted MMI-coupler for add-drop multiplexing

This paper presents a novel device for add-drop multiplexing. The device is based on a Bragg grating-assisted multimode-interference (MMI)-coupler. The paper also presents computation results and design rules for this promising kind of add-drop multiplexer. The computation is based on the mode propagation theory, SiO/sub 2/-Si is probably the most convenient technology for realizing this kind of device.