A twisted pair of photonic crystals integrated with MEMS can dynamically control the handedness of light on a chip.

Researchers at the Harvard John A. Paulson School of Engineering and Applied Sciences (SEAS) have developed a chip scale device that can actively control the “handedness” of light as it moves through it, a property known as optical chirality. The system works by slightly twisting two specially engineered photonic crystals.

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A twisted pair of photonic crystals integrated with MEMS can dynamically control the handedness of light on a chip.

Researchers at the Harvard John A. Paulson School of Engineering and Applied Sciences (SEAS) have developed a chip scale device that can actively control the “handedness” of light as it moves through it, a property known as optical chirality. The system works by slightly twisting two specially engineered photonic crystals.