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