Spotlight on “Silicon-based monolithic optical frequency comb source”

Optical frequency combs made of a large number of precisely spaced and sharp spectral lines distributed over a broad spectral range are becoming more and more attractive tools in many different fields. Optical clocks and precision spectroscopy were among the first applications, but more recently the use of optical combs has been proposed in many other emerging areas, including ultra-high-speed communications systems, optical waveform and microwave signal synthesis, and astronomical spectrographs calibration