High order proton-exchanged grating reflectors in Ti:LiNbO/sub 3/ waveguides

Summary form only. Most of periodic and aperiodic distributed parameter waveguides have many applications in integrated optical devices such as wavelength-dependent resonators, distributed feedback laser (DFB), or narrowband optical filters for WDM (wavelength division multiplexing) optical communication systems. Usually, fabrication methods are based on interferometric technique. In this paper, we report a new method of grating fabrication in Ti-indiffused LiNbO/sub 3/ waveguides based on the patterned proton-exchanged technique. This process offers great flexibility and simplifies the fabrication steps involved in standard holographic and dry etching methods.