Title :
Wide-band predistortion linearization for externally modulated long-haul analog fiber-optic links
Author :
Urick, Vincent J. ; Rogge, Matthew S. ; Knapp, Patrick F. ; Swingen, Lee ; Bucholtz, Frank
Author_Institution :
Naval Res. Lab., Washington, DC, USA
fDate :
6/1/2006 12:00:00 AM
Abstract :
We analyze the performance of a custom wide-band predistortion linearizer designed to operate in conjunction with an externally modulated analog photonic link. In addition, we propose an extended spurious-free dynamic-range (SFDR) specification for analog photonic links employing linearization techniques. The benefits of predistortion linearization for analog fiber links limited by optical amplifier noise are demonstrated and a 6-12-GHz 20-km analog link is shown to achieve a SFDR of 108.4 dB·Hz23/, a 6-dB increase relative to the uncompensated link.
Keywords :
distortion; linearisation techniques; microwave photonics; optical fibre amplifiers; optical fibre communication; optical links; 20 km; 6 to 12 GHz; SFDR specification; analog fiber links; analog fiber-optic links; analog photonic link; optical amplifier noise; spurious-free dynamic-range; wideband predistortion linearization; wideband predistortion linearizer; Broadband amplifiers; Linearization techniques; Optical fiber amplifiers; Optical modulation; Optical noise; Performance analysis; Predistortion; Semiconductor optical amplifiers; Stimulated emission; Wideband; Microwave photonics; predistortion linearization; spurious-free dynamic range (SFDR);
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
DOI :
10.1109/TMTT.2006.871357
