Low-noise and accessible millimeter-wave sources are critical for emergent
telecommunications, radar and sensing applications. Current limitations to
realizing low-noise, deployable millimeter-wave systems include size, weight,
and power (SWaP) requirements, along with complex operating principles. In this
paper we provide a compact photonic implementation for generating low phase
noise millimeter-waves, which significantly simplifies the architecture and
reduces the volume compared to alternative approaches. Two commercial diode
lasers are self-injection-locked to a micro-Fabry-Perot cavity, and their
heterodyne provides low phase noise millimeter waves reaching -148 dBc/Hz at 1
MHz offset on a 111.45 GHz carrier. Phase noise characterization at such levels
and frequencies poses unique challenges, and we further highlight the
capabilities of optically-based measurement techniques. Our approach to
millimeter-wave generation can leverage advances in photonic integration for
further miniaturization and packaging, thus providing a unique source of
accessible, compact, and low-noise millimeter waves.

Questo articolo esplora i giri e le loro implicazioni.

Scarica PDF: