Definition of Fabry-Perot interferometer

1. The Fabry-Perot interferometer is commonly used as a narrow-bandpass filter or as an instrument to measure spectral linewidths. Fabry-Perot interferometer (etalon)

   Fabry-Perot interferometers that cannot be scanned are called etalons.

   Schematic of a Fabry-Perot etalon

   Transmission through a Fabry-Perot interferometer as a function of wavelengthRelated Topics

   • Other Interferometers
   • Optics
   • Optical Materials