Hollow-core fiber array unit with integrated solid core waveguide interface

Abstract

A hollow core fiber array unit includes hollow core fibers each having a terminal end and an adapter that includes grooves. Each groove receives the terminal end of one of the hollow core fibers. The terminal end of the hollow core fibers is spaced from an end face of the adapter. The hollow core fiber array unit includes a spot size converter coupled to the end face of the adapter. The spot size converter includes a plurality of waveguides that correspond to the hollow core fibers. Each waveguide extends from an input at an input end of the spot size converter that is coupled to the end face of the adapter to an output at an opposite output end of the spot size converter. The input of each waveguide includes a first mode field diameter that corresponds to the hollow core fibers and the output includes a second mode field diameter.

Dependencies are inferred from the claim text.