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*Increase mdl_k ->> Decrease mdl_kdisc ! Bad discontinuitites otherwise
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.SUBCKT laser_diode LA LK OPTW PARAMS: seff=0.8 ith=15m cjo=16p RS=0.1 mdl_k=22 mdl_kdisc=5.92
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*voltage source to measure diode current
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VIMEAS LA ANODE DC 0
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DLASER ANODE LK diode_basic
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*Optical power from ABM source
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*Use of softplus function for 1/2 continuous model
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*2.66 is the value of the exp. temperature factor at 125°C
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BVOPT OPTW 0 V = if(I(VIMEAS) - mdl_kdisc*ith - 0.5,
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+seff*(I(VIMEAS) - ith*exp((temp - 27)/100)),
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+(seff/mdl_k) * ln(1 + exp(mdl_k*(I(VIMEAS) - ith * exp((temp - 27)/100) )) ))
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.model diode_basic D(RS={RS})
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.ends
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