20 GHz arbitrary radio-frequency waveform generator based on incoherent pulse shaping
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Show full item recordcomunitat-uji-handle:10234/9
comunitat-uji-handle2:10234/2507
comunitat-uji-handle3:10234/6973
comunitat-uji-handle4:
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Title
20 GHz arbitrary radio-frequency waveform generator based on incoherent pulse shapingDate
2008Publisher
Optical Society of AmericaISSN
10944087Type
info:eu-repo/semantics/articleVersion
info:eu-repo/semantics/acceptedVersionSubject
Abstract
We demonstrate a new approach of photonically assisted radiofrequency
(RF) waveform generation using a spectrally incoherent light
source. The system is based on the so-called generalized frequency-to-time
mapping ... [+]
We demonstrate a new approach of photonically assisted radiofrequency
(RF) waveform generation using a spectrally incoherent light
source. The system is based on the so-called generalized frequency-to-time
mapping operation. In this work, external modulation of the source is done by concatenating two electro-optic Mach-Zehnder modulators properly
biased to achieve short pulse gates which allow for broad bandwidth
electrical signals. Also, the spectral shaping stage is performed prior to O/E conversion. A detailed theoretical analysis demonstrates that even in this
case the frequency-to-time mapping is preserved. The key is that the noise
level is greatly reduced because the amplitude filter serves as noise rejecter.
Experimental results show up to ~20 GHz electrical bandwidth signals using 10 Gb/s standard telecommunication equipment with the nice feature of
repetition rate control on the generated electrical waveform. [-]
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info:eu-repo/semantics/openAccess
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- FCA_Articles [511]