Patent ID: 6721098
Filing Date: 2004-04-13
Classification: B81B,G01J,G02B

Abstract:
A triple electrode, single optical cavity micro-optical electromechanical system (MOEMS) Fabry-Perot tunable filter, comprising:a support wafer structure on which a membrane layer and an intervening spacer layer have been formed, which extend orthogonally to an optical axis; an optical membrane structure, which has been formed in the membrane layer that is attached to the support wafer structure, the optical membrane structure including a membrane electrode and a reflective coating, the optical membrane structure being released from the support wafer structure by partial removal of the intervening spacer layer; a first stationary electrode for supporting a first electrical field to deflect the optical membrane in a first direction toward the support structure; and a second stationary electrode for supporting a second electrical field to deflect the optical membrane in a second direction.