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We for the first time, study the effect of signal power variations on the extinction ratio and bandwidth of on-chip Brillouin filters for applications in RF photonics and coherent optical communications. The passband extinction reduces from 35 dB to 25 dB on increasing the input signal power by 36 dB, while the bandwidth increased from 13 MHz to 30 MHz.
A novel high-resolution channelizer based on dual coherent optical frequency combs (OFCs) and stimulated Brillouin scattering (SBS) is proposed and demonstrated. In the proposed scheme, the frequency components of a wideband RF signal are sliced into a number of parallel parts and converted into signals with the same center frequency. The bandwidth of each frequency slice is determined by the gain...
A complete realization of an optically tunable true time delay, generated through the combination of a photonic RF phase shifter and a Brillouin slow light element is presented. Illustration through a dynamic microwave photonic filter is demonstrated.
A photonic RF phase shifter is proposed and demonstrated based on a vector-sum technique using stimulated Brillouin scattering (SBS) in dispersion shifted fiber (DSF). Two optical sidebands are generated and introduced to the Brillouin processing module when an RF signal is modulated on a continuous-wave carrier by an electrooptic phase modulator. SBS amplification/depletion, as well as nonlinear...
A single passband, photonic microwave bandpass filter based on stimulated Brillouin scattering in a 1-km long highly nonlinear dispersion-shifted optical fiber is experimentally demonstrated. Using the proposed scheme a single microwave passband with a ~ 26 MHz bandwidth is readily achieved over a 1.3 ~ 9.3 GHz range.
We generate narrow-linewidth 40 GHz signals using a dual-wavelength SBS fiber laser. Data encoding at bit rates >1 Gb/s is also presented with 1 Gb/s data transmission in a 40 GHz wireless link demonstrated.
We demonstrate use of a fiber laser based on dual-wavelength stimulated Brillouin scattering to generate a 14.2-GHz tone with a Lt400-mHz linewidth. We discuss the dependence of this frequency on various drive parameters
We have assembled and characterized a microwave frequency analog fiber link that offers shot-noise-limited performance at input powers above the stimulated Brillouin scattering threshold. The 20 km span of fiber consists of three pairs of alternating fibers, with each pair separated by isolators. The measured SBS threshold using the backscatter approach is 14 dBm; however, the measured relative intensity...
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