Optical isolation and nonreciprocal devices are pivotal components in modern photonic systems, ensuring unidirectional light propagation and safeguarding sensitive equipment from unwanted reflections.

Marko Lončar’s group at SEAS builds isolator in a lithium niobate-based optical chip. Micrograph of electro-optic isolator chip on thin-film lithium niobate. An optical isolator created at the Harvard ...

Physicists have shown that ultra-thin two-dimensional materials such as tungsten diselenide can rotate the polarization of visible light by several degrees at certain wavelengths under small magnetic ...