Generation of a narrow linewidth mm-wave signal from two phase-locked DFB lasers that are mutually coupled via four wave mixing

Abstract

Wireless communication systems require compact sources for the generation of mm-wave signals, that must have high spectral purity (linewidth ≪ 100 kHz, phase noise ≪ 100 dBc @ 100 kHz offset), tuneability, low power consumption and low cost [1]. Other important applications for mm-wave signals are: i) anti-collision car-borne radars (60 GHz); ii) local oscillators for astronomic investigations (100–900 GHz range); iii) THz applications (300–3000 GHz range) [2].