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Proceedings Paper

Measurement of the electrostrictive constants of silica and their impact on poled silica devices
Author(s): Alice C. Liu; Michel J. F. Digonnet; Gordon S. Kino
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Paper Abstract

In an electro-optic poled-silica switch, modulation arises from both the electro-optic effect and electrostriction. To investigate the magnitude of these two contributions, we measured the phase shift induced in a thin slab of unpoled silica subjected to a strong dc plus a small, low-frequency (0 - 19 MHz) ac voltage. The frequency responses for light polarized parallel and perpendicular to the applied field exhibit a constant term due to electronic dc Kerr, and strong peaks due to electrostriction enhanced by mechanical resonances of the slab. A theoretical model is presented that gives good quantitative agreement with these observations. From this comparison we infer the values of the dc Kerr and electrostrictive constants of silica for each polarization. For the perpendicular polarization, electrostriction largely dominates in the frequency range under study. A potential electrostrictive modulator and the impact of electrostriction on the polarization dependence of poled-silica devices are discussed.

Paper Details

Date Published: 2 February 2001
PDF: 10 pages
Proc. SPIE 4216, Optical Devices for Fiber Communication II, (2 February 2001); doi: 10.1117/12.414106
Show Author Affiliations
Alice C. Liu, Stanford Univ. (United States)
Michel J. F. Digonnet, Stanford Univ. (United States)
Gordon S. Kino, Stanford Univ. (United States)


Published in SPIE Proceedings Vol. 4216:
Optical Devices for Fiber Communication II
Dilip K. Paul; Michel J. F. Digonnet; Osman S. Gebizlioglu; Osman S. Gebizlioglu; Roger A. Greenwell; Roger A. Greenwell; Dennis N. Horwitz; Dennis N. Horwitz; Dilip K. Paul, Editor(s)

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