We introduce a novel concept in Brillouin signal processing based on modification of the optical carrier's magnitude and phase by stimulated Brillouin scattering–induced depletion. The technique offers wideband processing and low noise and requires only low optical power. Application to the enhancement of a 25-km high-frequency analog link is experimentally demonstrated and yields a 6.5-GHz bandwidth extension and a 13-dB reduction in the link insertion loss without intermodulation distortion.
© 2000 Optical Society of America
(060.2330) Fiber optics and optical communications : Fiber optics communications
(060.4370) Fiber optics and optical communications : Nonlinear optics, fibers
(070.1170) Fourier optics and signal processing : Analog optical signal processing
(290.5900) Scattering : Scattering, stimulated Brillouin
Alayn Loayssa, David Benito, and María J. Garde, "Optical carrier Brillouin processing of microwave photonic signals," Opt. Lett. 25, 1234-1236 (2000)