Article

Caltech researchers have developed a technique that allows light to travel across silicon wafers with minimal signal loss, achieving fiber-like performance at visible wavelengths. This advancement in photonic integrated circuits (PICs) could enhance various technologies, including optical clocks and quantum systems, by maintaining coherence and reducing energy loss.

The method involves fabricating germano-silicate waveguides on silicon wafers, resulting in significant improvements over traditional materials. The research was supported by multiple grants from defense and research organizations.