2. Electrical measurements
2.1 Static measurements: voltage and current
Measuring the electrical characteristics of semiconductor transmitters is a good first approach to estimating component quality [6].
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When the emitting diode (LED or sub-threshold laser) is supplied with steady-state power from a DC generator, the total current flowing through the component is composed of :
a diffusion current, attributed to radiative recombination (curve I, figure 4 );
a non-radiative current, attributed to thermal recombination (or Schottky-Hall-Read) (curve II, figure
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Bibliography
References
Suppliers and materials
(non-exhaustive list)
Polytec's integrating sphere
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Power meter :
Agilent 8163A;
ILX Lightwave OMM-6810B.
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Optical spectrum analyzers (OSA) :
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