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Proceedings Paper

Formation And Properties Of Optical Waveguides In Strontium Barium Niobate (Sbn:60)
Author(s): C. H. Bulmer; O. Eknoyan; H. F. Taylor; A. S. Greenblatt; L. A. Beach; R. R. Neurgaonkar
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Paper 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.

Paper Details

Date Published: 10 March 1987
PDF: 6 pages
Proc. SPIE 0704, Integrated Optical Circuit Engineering IV, (10 March 1987); doi: 10.1117/12.937217
Show Author Affiliations
C. H. Bulmer, Naval Research Laboratory (United States)
O. Eknoyan, Texas A&M University (United States)
H. F. Taylor, Texas A&M University (United States)
A. S. Greenblatt, Naval Research Laboratory (United States)
L. A. Beach, Naval Research Laboratory (United States)
R. R. Neurgaonkar, Rockwell International Science Center (United States)

Published in SPIE Proceedings Vol. 0704:
Integrated Optical Circuit Engineering IV
Mark A. Mentzer; Sriram Sriram, Editor(s)

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