title: Add/drop filter using in-plane slanted gratings in azo polymers.
abstract: We have fabricated in-plane slanted gratings on azo-functionalized polymeric films using a fast, direct-writing method. By properly adjusting the resonance, these gratings can be used as 90 degrees integrated reflectors and add/drop filters in the plane of the film. We have produced an attenuation of 14.8 dB at 1560.2 nm with a FWHM of 6.47 nm. Also, a signal of 1548 nm wavelength was added to the output from a different direction. Any light shifted from the resonance will pass through the filter undisturbed.
authors.affiliation: Photonics Laboratory, Department of Electrical Engineering, School of Engineering, Shiraz University, Shiraz, Iran.
authors.forename: Hamidreza
authors.initials: H
authors.lastname: Karimi-Alavijeh
authors.forename: Mohammad-Amin
authors.initials: MA
authors.lastname: Baghban
authors.forename: Gholam-Mohammad
authors.initials: GM
authors.lastname: Parsanasab
authors.forename: Edris
authors.initials: E
authors.lastname: Sarailou
authors.forename: Alireza
authors.initials: A
authors.lastname: Gharavi
authors.forename: Sirus
authors.initials: S
authors.lastname: Javadpour