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