Lasers that transmit data on optical fibers do not produce monochromatic light. Instead, they provide a narrow spectrum that includes many wavelengths. The physical characteristics of optical fibers ...

Recent advances in 40-Gbit/second optical and electronic technologies suggest that service providers may soon be able to harvest those technologies to lower costs and to speed provisioning. Crucial to ...

A research team recently demonstrated active manipulation of chromatic dispersion, achieving achromatic focusing within a designated broadband. The development of metasurfaces opened a horizon for the ...

A new type of flat, ultrathin lens designed to be free of chromatic aberrations has been developed by researchers in the US. The device has a variety of potential applications, from ultralight imaging ...

Light travels at different speeds based on the medium it passes through. For example, in a vacuum, it travels at 3.0 × 10^8 m/s in a straight line. But when directed towards glass, air, diamond, water ...

White-light interferometry is one of today’s most precise tools for determining the properties of optical materials. Its achievable precision and accuracy are typically limited by systematic errors ...

Wavelength and propagation direction (angle) are two fundamental properties of light. The ability to selectively control both a specific wavelength and a specific angle forms the physical foundation ...

A singlemode optical fiber designed to reduce chromatic dispersion. The fiber core is fabricated in several layers with different refractive indices running in parallel throughout its length.