{TAIL ~ The present invention} overcomes many of the disadvantages associated with polymer clad glass optical waveguides known in {HEAD ~ the prior art} 
{ TAIL ~ The present invention } overcomes many of the disadvantages associated with polymer clad glass optical waveguides known in { HEAD ~ the prior art }
TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD