Novel tuneable optical filter made of a polymer and liquid crystal holographic grating on glass waveguides

Author

Donisi, D. ; D´Alessandro, Antonio ; Asquini, Rita ; Beccherelli, Romeo ; De Sio, L. ; Caputo, Roberto ; Umeton, Cesare

Author_Institution

Univ. of Rome "La Sapienza", Rome

fYear

2007

fDate

17-22 June 2007

Firstpage

1

Lastpage

1

Abstract

We present the experimental findings of a novel, switchable guided wave optical filter using a holographic Bragg grating as the optic field perturbation element using an inexpensive fabrication technology. The grating consists of a novel structure, known as POLICRYPS (polymer liquid crystal polymer slices), made of polymer slices alternated with films of aligned nematic liquid crystals (NLC). Such a composite grating is used as the overlayer of a single mode optical channel waveguide, which is obtained by using K⁺-Na⁺/Ag⁺-Na⁺ double ion-exchange in BK7 glass.

Keywords

Bragg gratings; holographic gratings; ion exchange; liquid crystal devices; liquid crystal polymers; nematic liquid crystals; optical filters; BK7 glass; POLICRYPS; double ion-exchange; glass waveguides; holographic Bragg grating; inexpensive fabrication; liquid crystal holographic grating; nematic liquid crystals; optic field perturbation element; polymer crystal holographic grating; polymer liquid crystal polymer slices; switchable guided wave optical filter; tuneable optical filter; Glass; Gratings; Holographic optical components; Liquid crystal polymers; Liquid waveguides; Optical films; Optical filters; Optical polymers; Optical waveguides; Polymer films;

fLanguage

English

Publisher

ieee

Conference_Titel

Lasers and Electro-Optics, 2007 and the International Quantum Electronics Conference. CLEOE-IQEC 2007. European Conference on

Conference_Location

Munich

Print_ISBN

978-1-4244-0931-0

Electronic_ISBN

978-1-4244-0931-0

Type

conf

DOI

10.1109/CLEOE-IQEC.2007.4386555

Filename

4386555