Noiseless intensity amplification of repetitive signals by coherent addition using the temporal Talbot effect.

ABSTRACT: Amplification of signal intensity is essential for initiating physical processes, diagnostics, sensing, communications and measurement. During traditional amplification, the signal is amplified by multiplying the signal carriers through an active gain process, requiring the use of an external power source. In addition, the signal is degraded by noise and distortions that typically accompany active gain processes. We show noiseless intensity amplification of repetitive optical pulse waveforms with gain from 2 to ~20 without using active gain. The proposed method uses a dispersion-induced temporal self-imaging (Talbot) effect to redistribute and coherently accumulate energy of the original repetitive waveforms into fewer replica waveforms. In addition, we show how our passive amplifier perfo

SUBMITTER: Maram R 

PROVIDER: S-EPMC4218965 | biostudies-literature | 2014 Oct

REPOSITORIES: biostudies-literature