Sine wave rugate index profiles may be superimposed on a slowly varying average index in such a way as to reduce sidelobes over broad spectral regions and at the same time maintain the strength of the stopband reflectance.
© 1989 Optical Society of America
Original Manuscript: July 7, 1988
Published: July 15, 1989
W. H. Southwell and Randolph L. Hall, "Rugate filter sidelobe suppression using quintic and rugated quintic matching layers," Appl. Opt. 28, 2949-2951 (1989)