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.SUBCKT p_type_laser_diode A K OPTW PARAMS: seff=0.85 ith=450m rs=0.1
*voltage source to measure diode current
VIMEAS LA ANODE DC 0
DLASER ANODE LK diode_basic
*Optical power from ABM source
*Use of softplus function for fully continuous model
*BVOPT OPTW 0 V = { (seff/646) * ln(1 + exp(646*(I(VIMEAS) - ith * exp((temp - 27)/100) )) ) }
BVOPT OPTW 0 V = {if(I(VIMEAS) - ith*exp((temp - 27)/100) - 0.5, seff*(I(VIMEAS) - ith*exp((temp - 27)/100)), 0)}
.model diode_basic D(RS={rs})
.ends