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Optically Activated SwitchModulator using
Integrated Optical Half Adder Circuit
2 other sections not shown
achieved Appl approximately Axial propagation constant bubbler c-axis calculated capacitance channel wave crystal surface deposited diffusion tube diode electrodes electrooptic modulators etched mesa photodiode evanescent field evanescent field coupling flow rate fringe pattern fringe shift function fused channel guided light guided mode half adder circuit high index region incidence angle integrated optical integrated optical circuits intensity IOC logic Li^O LiNbO line type defects logic element logic gate logic gate response measured obtained optical energy optical fibers optical path length optical signal processing optically activated switch outdiffused channel waveguides output of waveguide oxygen path length difference photoconducting film photocurrent photodetector photoresist polishing preferentially etched rectangular refractive index change refractive index increase refractive index profile resulting shown in Figure single mode SiO film slab surface index change surface refractive index temperature thickness Torr total internally reflected vaporization flux wafers water vapor waveguide output waveguide surface width