!Optical Spectrum Analyzer.jpg|thumbnail,align=right!A spectrum analyzer or spectral analyzer is a device used to examine the spectral composition of some electrical, acoustic, or optical waveform. It may also measure the power spectrum.
...
!Optical Spectrum Analyzer.jpg|thumbnail,align=right!A spectrum analyzer or spectral analyzer is a device used to examine the spectral composition of some electrical, acoustic, or optical waveform. It may also measure the power spectrum.
...