The measurement and analysis of any optical signals is not an easy
task, and probably the hardest one is spectrum analysis. However,
engineers and scientists gain valuable information from it, and
that’s why the good spectrometer is an important factor for every
project that requires spectrum measurement.
You’re probably wondering how does such a device work? Well, it
sounds simple, a grating, which is the essential part of every
spectrometer, splits the light into its components or wavelengths.
The light travels through the mirror and reaches photodetector bar- a
device which turns photons into electrical signal and a software
interprets them to measure their strength.Sounds simple,
right?
With that kind of view of the spectrum, it is not that hard to
measure a signal’s frequency, power, modulation, harmonic content,
spurs, as well as spectral noise. With these details, total harmonic
distortion, occupied bandwidth, signal stability, output power,
inter-modulation distortion, power bandwidth, carrier-to-noise ratio,
and a host of other measurements then can be seen using a
spectrometer.
Basic understanding of how do spectrometer work is necessary to
operate one. Once mastered, they are an extremely useful tools and
can help with characterizing and analyzing various devices and
systems.
ReadyDAQ has recently announced the release of the software for
spectrometers. This software allows users to watch as well as record
numerous sequential spectrums, even with delay, and to find a peak in
every single one of them for measuring pn-junction temperature of
semiconductor devices for example. The software is highly
customizable, allowing users to view the collected data in a graph,
or to observe spectrums in a continues mode.
SUMMARY:
The measurement and analysis of any optical signals is not an easy
task, and probably the hardest one is spectrum analysis. Basic
understanding of how do spectrometer work is necessary to operate
one. Once mastered, they are an extremely useful tools and can help
with characterizing and analyzing various devices and systems.
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