Demonstration of Multimode Interference Effect for PCF Connectors

摘要

This paper describes the practical demonstration of self-imaging, through the multimode interference effect, of the output of photonic crystal fibre (PCF) within a step-index multimode fibre (MMF). Self-imaging was found to occur at MMF lengths of 6 860 and 13 720 μm. A PCF-MMF-PCF chain was arranged with butt-couple connections at each interface. An overall transmission efficiency of 76% was measured. This proof of principle opens up the possibility to realize robust and efficient connectors for PCF.