Bragg Grating Optical Filters by UV Nanoimprinting. (11th March 2012)

• Record Type: Journal Article
• Authors: Casalboni, M.; Dominici, L.; Foglietti, V.; Michelotti, F.; Orsini, E.; Palazzesi, C.; Stella, F.; Prosposito, P.
• Other Names: Davtyan Sevan P. Academic Editor.
• Is Part Of: Journal of nanomaterials. Volume 2012(2012)
• Publication Date: 2012-03-11
• Subjects: Nanostructured materials -- Periodicals; Nanotechnology -- Periodicals; Nanomatériaux; Nanostructured materials; Nanotechnology; Nanostructures; Nanotechnology; Periodicals; Fulltext; Internet Resources; Periodicals; 620.115
• DOI: 10.1155/2012/186429
• Languages: English
• ISSNs: 1687-4110

Abstract

Abstract : Results on an optical waveguide filter operating in the near IR region are reported. The device consists of a hybrid sol-gel -based grating loaded waveguide, obtained through the merging of conventional photolithography and UV-nanoimprinting. Starting from submicrometric gratings, fabricated by electron beam lithography, a soft mould has been produced and the original structures were replicated onto sol-gel photosensitive films. A final photolithographic step allowed the production of grating-loaded channel waveguides. The devices were optically characterized by transmission measurements in the telecom range 1450–1590 nm. The filter extinction ratio is −11 dB and the bandwidth is 1.7 nm.