Abstract
Dynamic add–drop filters with variable bandwidth are demonstrated on microelectromechanical-system (MEMS)–actuated microdisk resonators for what is believed to be the first time. The tuning mechanism is based on a variable power coupling ratio that is controlled by varying the gap spacing between the waveguide and the microdisk through MEMS actuators. The results show wavelength switching with an extinction ratio of and a tunable bandwidth ranging from to . These dual functions were realized using the device with the operation voltage varying between 0 and .
© 2006 Optical Society of America
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