The Fourier transform technique developed for the design of variable refractive index coatings such as rugate filters is improved to achieve an accurate correspondence between optical properties and the refractive index profile. An application to the design of narrowband reflectors is presented.
© 1990 Optical Society of America
Original Manuscript: July 3, 1989
Published: January 1, 1990
Bertrand G. Bovard, "Rugate filter design: the modified Fourier transform technique," Appl. Opt. 29, 24-30 (1990)