Minimal voltage-length product accessible in channel-diffused waveguide electro-optic modulators in doped ferroelectrics

Aleksandra E. Kolosovskaya; C. C. Ziling

doi:10.1117/12.165985

21 January 1994 Minimal voltage-length product accessible in channel-diffused waveguide electro-optic modulators in doped ferroelectrics

Aleksandra E. Kolosovskaya, C. C. Ziling

Author Affiliations +

Proceedings Volume 2051, International Conference on Optical Information Processing; (1994) https://doi.org/10.1117/12.165985
Event: Optical Information Processing: International Conference, 1993, St. Petersburg, Russian Federation

Abstract

The problem of electro-optic interaction between a fundamental mode of channel diffused waveguide fabricated in doped LiNbO₃ type ferroelectrics and an electrostatic field of semi-infinite electrodes was investigated. As a result, the optimum relations between the geometric parameters of the waveguide-electrodes system to attain the minimal halfwave voltage-length product (U_(pi )l) were obtained. Since the surface index increase (Delta) n_s is the main factor setting the limit on the value of U_(pi )l in the red and infrared spectrum area, the maximal possible values of (Delta) n_s were estimated on the basis of the existing notions about the physical mechanisms controlling the refractive indices in ferroelectrics. It has been found that the most optimistic estimations give the decrease of U_(pi )l by 40% in comparison with the best currently achieved level.

Citation Download Citation

Aleksandra E. Kolosovskaya and C. C. Ziling "Minimal voltage-length product accessible in channel-diffused waveguide electro-optic modulators in doped ferroelectrics", Proc. SPIE 2051, International Conference on Optical Information Processing, (21 January 1994); https://doi.org/10.1117/12.165985

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