J
Jim Thompson
- Jan 1, 1970
- 0
I just ran onto a situation where a modulated laser impinging upon a
photodiode had such a high light level that the photodiode was
"saturated"... no more available carriers.
Thus "clipping" of the modulation was occurring in the photodiode
itself, creating harmonics.
And lowering the DC bias on the laser raised the AC signal level...
really strange lab results to ponder when you're tired ;-)
Any ideas how one might *model* the photodiode in Spice?
...Jim Thompson
photodiode had such a high light level that the photodiode was
"saturated"... no more available carriers.
Thus "clipping" of the modulation was occurring in the photodiode
itself, creating harmonics.
And lowering the DC bias on the laser raised the AC signal level...
really strange lab results to ponder when you're tired ;-)
Any ideas how one might *model* the photodiode in Spice?
...Jim Thompson