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A new change of phase

Ferroelectric domain switching controlled by electrical pulses provides a controllable means to tune the refractive index of BaTiO3 thin films. Now, a device based on this material is presented that is capable of implementing low-power, high-speed and CMOS-compatible programmable phase shifters in silicon photonic chips.

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Fig. 1: Optical phase shifters.

adapted from ref. 10, Springer Nature Ltd.


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Correspondence to José Capmany.

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Capmany, J., Pérez-López, D. A new change of phase. Nat. Photon. 16, 479–480 (2022).

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