{HEAD ~ A further object} of the invention is to provide {TAIL ~ an environmentally sealed polymer clad glass core} waveguide 
is to provide
{ HEAD ~ A further object } of the invention is to provide { TAIL ~ an environmentally sealed polymer clad glass core } waveguide
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH