Abstract :
One of the most common measurement instruments found in a modern optics laboratory is the optical spectrum analyzer (OSA). These instruments measure the optical power spectrum of light emitted from optical sources, as well as light generated from optical interactions with matter. OSAs are based on several technologies. Each technology offers strengths, but also has limitations. Choosing the correct technology for a measurement application requires understanding the concepts of sensitivity (the ability to measure low power optical signals), dynamic range (the ability to measure low power signals), resolution (the ability to measure two signals separated by a small wavelength difference), amplitude accuracy (the ability to measure the absolute optical power present), and wavelength accuracy (again, the absolute value)
Keywords :
Fabry-Perot resonators; Fourier transform optics; diffraction gratings; laboratories; sensitivity; spectral analysers; Fabry-Perot OSA; Fourier transform OSA; absolute optical power; amplitude accuracy; diffraction grating OSA; dynamic range; low power optical signals; measurement application; optical power spectrum; optical spectrum analyzer; optics laboratory; resolution; sensitivity; wavelength accuracy; wavelength difference; Dynamic range; Instruments; Laboratories; Optical sensors; Power generation; Power measurement; Signal resolution; Spectral analysis; Stimulated emission; Wavelength measurement;
