6533b871fe1ef96bd12d0f49
RESEARCH PRODUCT
Ambiguity function analysis of pulse train propagation: applications to temporal Lau filtering
Víctor Torres-companyPedro AndrésCristina M. Gómez-sarabiaJorge Ojeda-castanedaJesús Lancissubject
PhysicsAmplified spontaneous emissionAmbiguity functionbusiness.industryFilter (signal processing)SignalAtomic and Molecular Physics and OpticsElectronic Optical and Magnetic MaterialsOpticsHarmonicsTalbot effectPulse waveCoherence (signal processing)Computer Vision and Pattern Recognitionbusinessdescription
We use the periodic-signal ambiguity function for visualizing the intensity-spectrum evolution through propagation in a first-order dispersive medium. We show that the degree of temporal coherence of the optical source plays the role of a low-pass filter on the signal's ambiguity function. Based on this, we present a condition on the temporal Lau effect for filtering harmonics at fractions of the Talbot length. This result allows one to increase the repetition rate of a pulse train obtained from a sinusoidally phase-modulated CW signal.
year | journal | country | edition | language |
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2007-07-11 | Journal of the Optical Society of America A |