Fabry-Perot Interferometer

Introduction

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 wavelength

Related Topics

• Other Interferometers
• Optics
• Optical Materials