Title :
Broad-band electronic linearizer for externally modulated analog fiber-optic links
Author :
Chiu, Y. ; Jalali, B. ; Garner, S. ; Steier, W.
Author_Institution :
Optoelectron. Circuits & Syst. Lab., California Univ., Los Angeles, CA, USA
Abstract :
Linearization of analog fiber-optic links using a novel CMOS linearization circuit is reported. A 17-dB suppression of the third-order intermodulation product (IMP3) has been achieved at the modulation index of 49.6 % and over a broad-band frequency range from dc to 1.3 GHz. In an experimental link with a noise floor of -124 dBm/Hz, the spurious free dynamic range (SFDR) is improved by 14 dB from 85 dB/Hz/sup 2/3/ to 99 dB/Hz/sup 2/3/.
Keywords :
broadband networks; cable television; electro-optical modulation; intermodulation; linearisation techniques; optical fibre subscriber loops; optical noise; CMOS linearization circuit; analog fiber-optic link linearisation; broad-band electronic linearizer; broad-band frequency range; externally modulated analog fiber-optic links; modulation index; noise floor; spurious free dynamic range; third-order intermodulation product; CMOS technology; Circuits; Coaxial components; Dynamic range; Frequency; Optical fiber LAN; Optical fiber cables; Optical modulation; Optical transmitters; Transfer functions;
Journal_Title :
Photonics Technology Letters, IEEE
