The Fiber Optic Variable Optical Attenuator is based on an electrostatic MEMS mirror. A voltage between 0-5 V on the drive pin sets the optical attenuation. When power is removed, the VOA returns into its default state.
Since 1999 Sercalo is a leading supplier for optical MEMS components. Sercalo's skills span the entire process of manufacture, from the design of the MEMS chip to its fabrication and assembly.