Mechano-optical waveguide on-off intensity modulator

G.J. Veldhuis, C. Gui, T. Nauta, T. Nauta, T.M. Koster, Johan W. Berenschot, Paul Lambeck, Johannes G.E. Gardeniers, Michael Curt Elwenspoek

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High-extinction on–off modulators are essential for channel selection in integrated-optical sensor arrays. We report a standard SiON-technology-based electrostatically driven integrated mechano-optical waveguide on–off intensity modulator. On–off modulation is achieved by movement of an absorbing element into and out of the evanescent field of the guided mode. An extinction ratio of >37 dB at an actuation voltage of <30 V was achieved in a 6 mm×4 mm device for a wavelength of 632.8 nm. Full wafer-scale fabrication is made possible by use of chemical mechanical polishing and aligned wafer bonding
Original languageUndefined
Pages (from-to)1532-1534
Number of pages3
JournalOptics letters
Issue number19
Publication statusPublished - 1 Oct 1998


  • IR-14300
  • METIS-111536
  • EWI-13368

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