Title :
Improvement of diffraction efficiency for all-optical tunable wavelength filter by apodized photorefractive grating
Author :
Wakayama, Y. ; Okamoto, A. ; Tomita, A. ; Nihei, H. ; Honma, S. ; Suzuki, K.
Author_Institution :
Grad. Sch. of Inf. Sci. & Technol., Hokkaido Univ., Sapporo, Japan
Abstract :
A great improvement of diffraction efficiency in all-optical tunable holographic wavelength filters is shown by activating four corners of the material with photorefractive apodization method by optimizing the intensity ratio of the writing beams.
Keywords :
diffraction gratings; holographic gratings; light diffraction; optical filters; optical images; photorefractive materials; all-optical tunable holographic wavelength filters; apodized photorefractive grating; diffraction efficiency; intensity ratio; Diffraction; Diffraction gratings; Gratings; Optical fiber filters; Tuning; Writing;
Conference_Titel :
OptoElectronics and Communications Conference (OECC), 2010 15th
Conference_Location :
Sapporo
Print_ISBN :
978-1-4244-6785-3
