Compact optical microfiber components based on small size piezoelectric ceramic transducer

Optical microfibers have attracted much attention in recent years due to its physical flexibility and low bending loss, which enables the possibility to make compact active optical components when combined with small-size piezoelectric ceramic transducers. Here, we present the demonstration of OM embedded in low refractive index polymer wound around a piezoceramic rod of 1 mm diameter and 6 mm length as a compact optical phase modulator, which showed a frequency response up to 1 MHz. We also report the fabrication of a compact tunable optical resonator from a 3 mm diameter, 1 mm thick piezoceramic disc with a 50 pm shift when 600 V is applied across its electrodes.