Disclosed is an MEMS variable
optical attenuator comprising a substrate having a planar surface, optical fibers having an optical
signal transmitting end and an optical
signal receiving end, respectively, coaxially arranged on the substrate, a micro-electric
actuator arranged on the substrate for providing a driving
stroke along a direction perpendicular to an
optical axis of the
optical beam, at least one lever structure arranged on the substrate for receiving the driving
stroke of the micro-electric
actuator at a first end thereof and transferring an amplified displacement distance to an optical
shutter through a second end thereof, an optical
shutter arranged on the substrate and connected to the second end of the lever structure so as to be moved by the amplified displacement distance, thereby being displaced to an attenuation position of the
optical beam.