Therefore, more modal dispersion will be present, with more light in {TAIL ~ the center} of {HEAD ~ the fiber}, if phase matching is not used 
Therefore , more modal dispersion will be present , with more light in { TAIL ~ the center } of { HEAD ~ the fiber } , if phase matching is not used
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH