The M9700 can virtually depolarize any low- and medium-coherence sources such as high-power LEDs (SLDs), Fabry-Perot laser diodes, DFBs, as well as the EXFO IQ-2600 and FLS-2600 families of erbium-doped tunable laser sources.

This article reviews the basics of light-emitting diodes (LEDs)—whether they are edge-emitting (EELED), surfaceemitting, or super-luminescent diodes (SLEDs)—in test and measurement applications.