the specification describes a fiber lightguide connector for interconnecting large arrays of lightwave fibers . linear arrays of lightwave fibers , for example those in so - called ribbon cables , are effectively interconnected using known v - groove connector assemblies . according to the invention two or more such v - groove connector assemblies are stacked to increase the fiber capacity of a connector assembly . attempts to stack known v - groove connector plates have encountered problems with aligning the v - groove arrays on opposite sides of the internal or intermediate plate of the stack . an alignment technique is described for assuring precise alignment between linear arrays of v - grooves on opposite sides of the interior plates of stacked linear array connectors .