If the temperature tuning coefficient is relatively large, {TAIL ~ the center wavelength} will vary substantially with {HEAD ~ temperature} 
If the temperature tuning coefficient is relatively large , { TAIL ~ the center wavelength } will vary substantially with { HEAD ~ temperature }
OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD