Fibre-Array to Photonic Chip Fixation and Re- alignment using Laser weld Adjustment

A new concept for coupling fibre arrays to an optical chip in the sub-micron range is presented. The possibility for re-alignment after permanent fixation has been demonstrated. The smallest re-alignment step of 0.1 µm is measured using laser adjustment. To investigate the mechanical stability, a fibre array and chip with wave-guide loops will be used. For this experiment, the infrared spot distribution of a commercially lensed four fibre array is measured. The accuracy of the infrared spot determination is better than 0.4 µm. These results are compared with the coupling efficiency of the fibre-tips in combination with standard InP-based wave-guide loops