Title :
Adaptive CMOS predistortion linearizer for fiber-optic links
Author :
Sadhwani, Ram ; Jalali, Bahram
Author_Institution :
Electr. Eng. Dept., Univ. of California, Los Angeles, CA, USA
Abstract :
Nonlinearity in the electrical-to-optical conversion limits the dynamic range for transmitting analog and multilevel signals over fiber-optic channels. We describe a complementary metal-oxide-semiconductor (CMOS) predistortion linearizer that extends the dynamic range of both direct and externally modulated links. The linearizer achieves 13-24-dB suppression for both second- and third-order distortions.
Keywords :
CMOS analogue integrated circuits; electro-optical devices; intermodulation distortion; linearisation techniques; optical fibre communication; optical modulation; 13-24-dB suppression; adaptive CMOS predistortion linearizer; broadband linearization; electrical-to-optical conversion limits; externally modulated links; fiber-optic links; metal-oxide-semiconductor predistortion linearizer; multilevel signals; second order distortions; third order distortions; transmitting analog; Costs; Dynamic range; Frequency; Mathematical model; Nonlinear distortion; Optical fiber communication; Optical fiber devices; Optical fiber polarization; Optical transmitters; Predistortion;
Journal_Title :
Lightwave Technology, Journal of
DOI :
10.1109/JLT.2003.822245
