Predistortion technique for RF-photonic generation of high-power ultrawideband arbitrary waveforms

By employing an RF-photonic arbitrary waveform generator, the authors experimentally obtained complex high-power RF waveforms with spectra spanning more than a decade and voltage amplitudes of more than 13 V in a system limited by a gain ripple of up to 5 dB and phase distortion of over 200/spl deg/...

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Bibliographic Details
Published in:Journal of lightwave technology 2006-07, Vol.24 (7), p.2752-2759
Main Authors: Bortnik, B., Poberezhskiy, I.Y., Chou, J., Jalali, B., Fetterman, H.R.
Format: Article
Language:English
Subjects:
Amplification
Broadband amplifiers
Gain
High speed optical techniques
microwave generation
Optical distortion
optical fiber dispersion
Optical signal processing
Phase distortion
Predistortion
Radio frequencies
Radio frequency
Radiofrequency amplifiers
Ripples
Signal generators
spatial light modulators (SLMs)
Spectra
Ultra wideband technology
Ultrawideband
Voltage
Waveform generators
Waveforms
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Summary:By employing an RF-photonic arbitrary waveform generator, the authors experimentally obtained complex high-power RF waveforms with spectra spanning more than a decade and voltage amplitudes of more than 13 V in a system limited by a gain ripple of up to 5 dB and phase distortion of over 200/spl deg/. A spectral predistortion technique tailored to photonically assisted waveform generators that can overcome substantial RF amplifier gain ripple and phase distortion in order to generate high-power (> 30 dBm) ultrawideband arbitrary RF waveforms is presented.
ISSN:0733-8724
1558-2213
DOI:10.1109/JLT.2006.875943