Zhang, Xueliang, Belal, M., Chen, G.Y., Song, Zhangqi, Brambilla, G. and Newson, T. P.
Compact optical microfiber phase modulator.
Optics Letters, 37, (3), . (doi:10.1364/OL.37.000320).
A compact optical microfiber phase modulator with MHz bandwidth is presented. A micrometer-diameter microfiber is wound on a millimeter-diameter piezoelectric ceramic rod with two electrodes. When a voltage is applied to the piezoelectric ceramic, the rod is strained, leading to a phase change along the microfiber; because of the small size, the optical microfiber phase modulator can have as high as a few MHz bandwidth response.
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