Packaging of tapered waveguides with MT connectors to cost effectively facilitate connection of single-mode and multi-mode optical networks

With the rapid expansion of short haul data communication (multi-mode optical) networks and the conversion of long haul telecommunication (single-mode optical) networks from voice to IP based data protocols, an optical technique to combine these two networks as well as other mode mismatched networks and components must be developed. Since the interface of these networks will be with-in centralized routers/hub/switching stations which involves multiple channels/optical fibers, a low loss cost effective solution is required for a multi-channel physical fiber connection between the networks. Currently one standard multi-channel fiber connector, the (MT) mechanically transferable, is widely used on both types of networks and fortunately shares with one exception, the same physical fiber ferrule form factors that could facilitate the physical interface between these networks. To compensate for the one exception (mode mismatched dissimilar fiber core diameters) a tapered waveguide that is physically matched to each network fiber core type has been package to facilitate low loss coupling with MT connectors. A technical description follows for packaging tapered waveguides supplied from Radiant Research Inc. into a form suitable for connection between a single and multi-mode MT connector. This form will be referred as a MT stand-off.