There are several ESD protection means commonly
employed for the purpose of protecting laser diodes. In order to locate
the protection means close to the laser diode, these protection means are
often embodied within a “head” that may be located remotely from the laser
diode driver circuitry.
This section, "Review of ESD approaches", describes
common ESD protection means, and why they are usually not effective. To
continue to the next page in this section, simply click on the green
"Simple resistor" text, underneath the amber word "NEXT" (above).
ESD polarity terminology used on this
The term “positive-ESD” is used to
mean electrostatic discharge (ESD) whose voltage polarity would tend
to forward-bias a laser diode. “Negative-ESD,” means ESD whose
voltage polarity would tend to reverse-bias a laser diode.