Title :
Predistortion technique for RF-photonic generation of high-power ultrawideband arbitrary waveforms
Author :
Bortnik, Bartosz ; Poberezhskiy, Ilya Y. ; Chou, Jason ; Jalali, Bahram ; Fetterman, Harold R.
Author_Institution :
Electr. Eng. Dept., Univ. of California, Los Angeles, CA, USA
fDate :
7/1/2006 12:00:00 AM
Abstract :
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°. 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.
Keywords :
microwave photonics; optical distortion; waveform generators; RF-photonic generation; arbitrary waveform generator; gain ripple; phase distortion; spectral predistortion technique; High speed optical techniques; Optical distortion; Optical signal processing; Phase distortion; Predistortion; Radio frequency; Radiofrequency amplifiers; Signal generators; Ultra wideband technology; Voltage; Broadband amplifiers; microwave generation; optical fiber dispersion; optical signal processing; signal generators; spatial light modulators (SLMs);
Journal_Title :
Lightwave Technology, Journal of
DOI :
10.1109/JLT.2006.875943
