Positioning assembly for positioning the tip of an optical fiber

A positioning assembly for positioning a tip of an optical fiber, the positioning assembly comprising:

• a first positioning element configured to define and adjust a position of the tip of the optical fiber,
• a first piezoelectric element having a first axis of expansion and/or contraction,
• a second piezoelectric element having a second axis of expansion and/or contraction substantially parallel to the first axis,
• a first plate contacted with the first piezoelectric element, and
• a second plate contacted with the second piezoelectric element,
• wherein the first plate and the second plate are mechanically coupled to the first positioning element,
• wherein the first plate and the second plate each act as a lever so that a movement of the first plate and/or the second plate in a direction along the first axis, induced by an expansion and/or contraction of the first piezoelectric element and/or the second piezoelectric element respectively, results in a movement of the first positioning element, and
• wherein the movement of the first positioning element has a component perpendicular to the first axis.