DESIGN OF A LOSSY TUNABLE WAVELENGTH DEMULTIPLEXER UTILIZING MGO-TI-LINBO3 DEPRESSED INDEX WAVE-GUIDES

Design of an integrated optical tunable wavelength demultiplexer with a stable channel spacing is shown, utilizing software tools suitable f or metal clad diffused channel waveguides. The device, consisting on a three-mode depressed index waveguide with single-mode input and outpu t waveguides has been designed using experimental data of double diffu sion of MgO on Ti:LiNbO3 waveguides. The BPM simulations show the feas ibility of the device, the stable spectral behavior and the narrow sep aration between channels obtained, It is also shown that the buffer la yer between electrodes and waveguides can be eliminated depending on t he design parameters.