Tunable microwave generation using dual-wavelength Brillouin O-band fiber laser

Abstract

A dual-wavelength fiber laser with a tunable output for generating microwave signals is proposed and demonstrated. The system utilizes stimulated Brillouin scattering inside a dispersion compensating fiber to generate the desired dual-wavelength output, which then beats to form the desired microwave frequency in the O-band region. A constant channel spacing of 0.072 nm is obtained for wavelengths ranging from 1260.0 nm to 1330.0 nm. The resulting microwave signal can also be tuned from 13.0 GHz to 12.3 GHz is achieved by controlling the Brillouin pump wavelength, and has a stable signal-to-noise ratio of 30.0 dB.