10 March 1987 Formation And Properties Of Optical Waveguides In Strontium Barium Niobate (Sbn:60)
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Proceedings Volume 0704, Integrated Optical Circuit Engineering IV; (1987) https://doi.org/10.1117/12.937217
Event: Cambridge Symposium-Fiber/LASE '86, 1986, Cambridge, MA, United States
Abstract
Single mode channel and planar waveguides have been formed in strontium barium niobate Sr0.6 Ba0.4Nb206 (SBN:60) by sulfur indiffusion.1 The vapor diffusion is performed in a sealed ampule and is followed by oxidation in an open tube. Present channel waveguide losses are high: approximately 15-20 dB/cm for the TM mode and 27-32 dB/cm for the TE mode in Z-cut substrates. After poling of the substrate, electro-optic modulation was observed. The effective electro-optic coefficient was determined experimentally as 3.3 ± 0.2 x 10-10 m/V (over the frequency range 100 Hz-1 MHz) which is about 15 times greater than for the commonly used integrated optical materials, LiNbO3 and LiTaO3. Diffusions were conducted with the S35 radio-isotope in order to determine the sulfur distribution within the SBN. The atomic sulfur concentration was estimated to be approximately 4 x 1017 cm-3 in the region from the surface to a 2.5 tim depth and there was still a significant concentration (approximately an order of magnitude smaller) at depths of > 20 μm.
© (1987) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
C. H. Bulmer, C. H. Bulmer, O. Eknoyan, O. Eknoyan, H. F. Taylor, H. F. Taylor, A. S. Greenblatt, A. S. Greenblatt, L. A. Beach, L. A. Beach, R. R. Neurgaonkar, R. R. Neurgaonkar, } "Formation And Properties Of Optical Waveguides In Strontium Barium Niobate (Sbn:60)", Proc. SPIE 0704, Integrated Optical Circuit Engineering IV, (10 March 1987); doi: 10.1117/12.937217; https://doi.org/10.1117/12.937217
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