Fabry–Pérot etalon
= Fabry–Pérot etalon
{c}
= Etalon
{synonym}
A <Fabry–Pérot etalon> fixes mirror separation in a <Fabry–Pérot interferometer>, selecting <wavelengths> through its transmission resonances.<LM-0300 Fabry Perot Spectrum Analyser by Walter Luhs>[§1.0 p. 3: fixed-spacing Fabry Perot etalon]{ref}