Magnetically actuated optical phase modulator

Alan R. Kost, Lili Xiao, Kameron Rausch

Research output: Contribution to journalArticlepeer-review

1 Scopus citations


A magnetically actuated optical phase modulator is described. The phase of a reflected optical beam is modulated by deflecting a Mylar® membrane, coated with a magnetic iron/nickel film, with the field of an electromagnet. A phase change of π for light of wavelength 0.633 μm was achieved with a driving voltage of only 4 V, much smaller than the voltage required for comparable, electrostatically-actuated devices. The modulator can be scaled to micron dimensions for fabrication in arrays, scaled for even lower drive voltage, and operated at megahertz frequencies.

Original languageEnglish (US)
Article number080502
JournalOptical Engineering
Issue number8
StatePublished - Aug 2005


  • Integrated optics
  • Magnetic properties
  • Micro-optics
  • Microelectromechanical systems
  • Mirrors
  • Modulators

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • General Engineering


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