On the other hand, a small tuning coefficient will yield {HEAD ~ small changes} in {TAIL ~ center wavelength} with temperature 
On the other hand , a small tuning coefficient will yield { HEAD ~ small changes } in { TAIL ~ center wavelength } with temperature
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH