{HEAD ~ An object} of {TAIL ~ the present invention} is to provide a mode converter capable of uniformly coupling the power of a fundamental mode of a single mode optical waveguide to each mode of a multi mode optical waveguide 
of
{ HEAD ~ An object } of { TAIL ~ the present invention } is to provide a mode converter capable of uniformly coupling the power of a fundamental mode of a single mode optical waveguide to each mode of a multi mode optical waveguide
HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH