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Piezoelectrically induced optical phase modulation of light in single-mode fibers

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4 Author(s)
Imai, M. ; Dept. of Eng. Sci., Hokkaido Univ., Sapporo, Japan ; Yano, T. ; Motoi, K. ; Odajima, Akira

Optical phase modulation induced in piezoelectric copolymer, vinylidene fluoride (73 mol.%)/trifluoroethylene (27 mol.%), coated single-mode fibers has been examined and analyzed from both experimental and theoretical aspects. High-sensitive phase modulation, which is more than four times as large as those of vinylidene fluoride/tetrafluoroethylene copolymer, is obtained over a flat response range from 10 kHz to 3 MHz. At frequencies below 7 kHz and higher than 6 MHz the optical responses are dominated by axial and radial resonances, respectively, of the fiber-jacket composite. The theoretical prediction on induced phase shifts at high frequencies is carried out based on radial vibration analysis and followed by the experimental results

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Quantum Electronics, IEEE Journal of  (Volume:28 ,  Issue: 9 )