Title :
Technological implementation of Bragg grating reflectors in Ti:LiNbO3 waveguides by proton exchange
Author :
Benkelfat, B.-E. ; Ferriére, R. ; Wacogne, B. ; Mollier, P.
Author_Institution :
Dept. Electron. et Phys., Inst. Nat. des Telecommun., Evry, France
Abstract :
The authors propose and demonstrate a simple and novel method for fabrication of efficient Bragg grating reflectors at telecommunication wavelengths in titanium-indiffused lithium niobate single-mode channel waveguides. This technique is based on the patterned proton-exchanged process. The validity of the method is verified by the good agreement of the spectral responses and the Bragg phase-matching condition. Reflectivity as high as 94% at 1546 nm was measured with 4-mm distributed parameter waveguides in z-cut lithium niobate.
Keywords :
Bragg gratings; electro-optical filters; integrated optics; ion exchange; lithium compounds; mirrors; optical fabrication; optical phase matching; optical waveguides; titanium; 1546 nm; 4 mm; Bragg grating reflectors; Bragg phase-matching condition; LiNbO/sub 3/:Ti; Ti:LiNbO/sub 3/ waveguides; distributed parameter waveguides; fabrication; optical filters; patterned proton-exchanged process; proton exchange; spectral responses; technological implementation; telecommunication wavelengths; titanium-indiffused lithium niobate single-mode channel waveguides; z-cut lithium niobate; Bragg gratings; Frequency conversion; Lithium niobate; Optical device fabrication; Optical devices; Optical filters; Optical frequency conversion; Optical refraction; Optical waveguides; Protons;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2002.801106
