Wide-frequency fiber-optic phase modulator using piezoelectric polymer coating
- 1 October 1990
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Photonics Technology Letters
- Vol. 2 (10) , 727-729
- https://doi.org/10.1109/68.60773
Abstract
The highly sensitive response of a fiber-optic phase modulator that is coated with 80-90- mu m-thick vinylidene fluoride/trifluoroethylene copolymer on an 80- mu m-diameter single-mode fiber and made piezoactive by radial poling is demonstrated over a wide frequency range, from 500 Hz to 50 MHz. In the range of 10 kHz up to 2 MHz, a relatively flat response is measured, whereas at high frequencies between 6 and 50 MHz, the phase modulation exhibits multiple peaks dominated by radial resonances of the fiber-jacket composite. Theoretical considerations on the phase shift and experimental results are given.<>Keywords
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