Fabry-Pérot filter

Fabry-Pérot filter

[fä′brē pə′rō ′fil·tər]
(optics)
An optical interference filter, similar to the Fabry-Pérot interferometer except that the space between the partially reflecting surfaces is only a few thousand angstroms.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.