disclosed is a microelectromechanically tunable fabry - perot device and method of manufacturing tunable fabry - perot device and method of manufacturing . the f - p device comprises a first and second substrate which has partially reflective planar surfaces , and the partially reflective planar surfaces are separated by a predetermined separation distance and aligned to provide a f - p cavity , where one or more piezoelectric members are adapted to displace the first and second substrates when an electric field is applied .