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Proceedings Paper

Acousto-optic phase modulation properties of coaxially-deposited ZnO transducers on single-mode fibers
Author(s): Fred S. Hickernell
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Paper Abstract

The acoustooptic (AO) phase modulation properties of coaxially deposited zinc oxide (ZnO) transducers on single mode optical fibers have been experimentally and theoretically investigated at several laboratories over the past 15 years. Maximum phase shifts are observed at distinct frequencies, corresponding to bulk acoustic waves in the fiber, over the transducer operating range of 200 MHz to 1.0 GHz. Phase shift values have been measured with both cw and pulsed signal inputs to the transducers from milliwatts to above 1 Watt. Transducer lengths have been varied from 30 mm to 2 mm to determine the effects of AO phase shift on the length of the interaction. Modulation efficiencies in the range of 0.2 to 0.3 radians per square root of input power (in mW) per centimeter, for 2 to 6 mm interaction lengths, have been observed at frequencies in the 200 to 400 MHz region corresponding to acoustic wavelengths on the order of the core dimensions of the optical fiber. The characteristics and capabilities of AO modulation in optical fibers with deposited coaxial ZnO transducers is discussed using examples from experimental work.

Paper Details

Date Published: 27 October 1999
PDF: 9 pages
Proc. SPIE 3803, Materials and Devices for Photonic Circuits, (27 October 1999); doi: 10.1117/12.366751
Show Author Affiliations
Fred S. Hickernell, Optical Sciences Ctr./Univ. of Arizona (United States)

Published in SPIE Proceedings Vol. 3803:
Materials and Devices for Photonic Circuits
Mario Nicola Armenise; Walter Pecorella; Liliane G. Hubert-Pfalzgraf; S. Iraj Najafi, Editor(s)

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