Two-dimensional monomode optical fibre array manufacture using microengineering techniques

A method to manufacture two-dimensional bundles of optical single mode fibres is described in this article. Submicron translational alignment accuracy is being implemented by this method. An array of micro holes, each surrounded by four electrodes was produced using the Lithographie Galvanoformung Abformung process. Electrostatic fields between the electrodes and a metal coated optical single mode fibre inserted into such a hole were used to position the fibre inside the hole. By combining electrostatic movement and optical monitoring of the actual fibre position in a closed loop feedback alignment system high positioning accuracy can be realised.