reset

set term postscript enhanced eps color size 8.6cm,6cm font "Helvetica,28pt" dashlength 2.0
set output 'transmission_1300.eps'

set xrange [1200:1400]
set yrange [-0.01:1]
#set logscale y
set xtics ("1200" 1200, "1250" 1250, "1300" 1300, "1350" 1350,"1400" 1400)
set xlabel "Wavelength (nm)"
set ylabel "Bandpass\n transmission" offset 2,0
set arrow 7 heads size screen 0.008,90 from 1544,0.3 to 1556,0.3
set label 1 at 1542, 0.2 '12nm' font "Helvetica, 20"


plot    '1300_500_2500nm.asc' using 1:(sqrt((($2)/100)**2)) w l lw 2 lc rgb "red" notitle