Furthermore, a time difference between the fundamental mode and highest order mode when {TAIL ~ the modes} arrive at the ends of the mode converters must be smaller than a modulation rate to result in {HEAD ~ no signal distortion} 
Furthermore , a time difference between the fundamental mode and highest order mode when { TAIL ~ the modes } arrive at the ends of the mode converters must be smaller than a modulation rate to result in { HEAD ~ no signal distortion }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD